YellowIbis.com: The best science t-shirts, chemistry t-shirts, nerd t-shirts, and more. ~ RSS Feed

YellowIbis.com 'Holiday 2009' Women's Standard T-Shirt: H2O Snowman (Color Choice)

New Product! Celebrate the holidays with a happy snowman with water molecules. Durable white, aqua and black flock-print design on a standard medium-weight tee. Holiday 2009 Limited Edition!

$ 15.99

YellowIbis.com 'Holiday 2009' Men's / Unisex Standard T-Shirt: H2O Snowman (Color Choice)

New Product! Celebrate the holidays with a happy snowman with water molecules. Durable white, red and black flock-print design on a standard medium-weight tee. Holiday 2009 Limited Edition!

$ 15.99

YellowIbis.com 'Holiday 2009' Women's Standard T-Shirt: H2O Snowman (Color Choice)

New Product! Celebrate the holidays with a happy snowman with water molecules. Durable white, red and black flock-print design on a standard medium-weight tee. Holiday 2009 Limited Edition!

$ 15.99

YellowIbis.com 'Chemical Structures' Women's Standard T: Ethanol (Black)

Chemistry t-shirt features the 3D structure of ethanol. Durable three color flex-print design on a standard weight t-shirt. Want a custom version? Create your own chemical t-shirt in our shirt designer!

$ 16.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Standard T: Ethanol (Red)

Chemistry t-shirt features the 3D structure of ethanol with abstract atom colorization. Durable two color flex-print design on a standard weight t-shirt.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Standard T: Ethanol (Black)

$ 16.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Better living through chemistry (Color Choice)

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Slim-Fit American Apparel T: Better living through chemistry (Color Choice)

Chemistry t-shirt features the text "better living through chemistry", an adaptation of DuPont's famous motto of 1935, "Better Things for Better Living … Through Chemistry”. Durable powder blue and neon yellow flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Better living through chemistry (Color Choice)

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Heavyweight T: Skull and Pipets (Black)

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Tie Dye T: Skull and Pipets (Black)

The ultimate chemistry and biochemistry t-shirt: our unique Skull and Pipets symbol, exclusive to YellowIbis.com. For the bad a** bench workers out there! Just add science pirate. Durable white flex-print design on a tie-dye shirt. Shirt patterns will vary.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Heavyweight T: Skull and Pipets (Black)

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Warhol Darwin (White)

The evolution of the Darwin portrait, Warhol style, on a crisp white tee. Pop art meets the biology t-shirt. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Evolution' Large 2.25" Buttons: Warhol Darwin

The evolution of the Darwin portrait, Warhol style. Pop art meets the button. 5-pack of buttons means you can share! Colors of printed product may vary slightly from screen display.

$ 5.99

YellowIbis.com 'Evolution' Women's Heavyweight T: Warhol Darwin (White)

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Caffeine (Color Choice)

Caffeine's chemical structure is displayed on this popular chemistry t-shirt. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. Durable yellow-orange flex-print design on a heather jersey T. NOTE: check sizing before ordering. Want your own custom version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex American Apparel T: Caffeine (Color choice)

Caffeine's chemical structure is displayed on this popular chemistry t-shirt. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. Durable cream flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary. Want your own custom version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Caffeine (Color Choice)

Caffeine's chemical structure is displayed on this popular chemistry t-shirt. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. Durable dark brown flex-print design on your choice of t-shirt color. Want your own custom version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex American Apparel T: Pi Symbol (Color choice)

Black and royal blue 'pi' symbol on your choice of t-shirt color. The perfect mathematics t-shirt for Pi Day or any day! Durable flock-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex American Apparel T: Pi Symbol (Color choice)

Gold and purple 'pi' symbol on your choice of t-shirt color. The perfect mathematics t-shirt for Pi Day or any day! Durable flock-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics Symbols' Women's Slim-Fit American Apparel T: Pi Symbol (Color choice)

Gold and light blue 'pi' symbol on your choice of t-shirt color. The perfect mathematics t-shirt for Pi Day or any day! Durable flock-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: What a scientist looks like (Customizable text, Color)

"This is what a scientist looks like". This unique science t-shirt is perfect for those times when you get told that you don't "look" like a scientist! This shirt was first sold by us, and featured as one of Seed Magazine's "Daily Zeitgeist" for March 2006. The text is customizable, if you wish to modify it to say something detailed about you or your research field. Your choice of durable flex-print or flock-print.

$ 19.99

YellowIbis.com 'One Liners' Women's Slim-Fit American Apparel T: What a scientist looks like (Customizable text, Color)

$ 19.99

YellowIbis.com 'One Liners' Women's Heather Jersey T: What a scientist looks like (Customizable text, Color)

$ 19.99

YellowIbis.com 'Mathematics Physics' Women's Heavyweight T: Euler's Identity (Color choice)

Physics / mathematics t-shirt features Euler's identity, voted "greatest equation ever" in a 2004 reader poll conducted by Physics World. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Mathematics Physics' Men's / Unisex Organic Jersey T: Euler's Identity (Natural Beige)

Physics / mathematics t-shirt features Euler's identity, voted "greatest equation ever" in a 2004 reader poll conducted by Physics World. Durable navy flex-print design on a 100% certified organic cotton jersey t-shirt.

$ 22.99

YellowIbis.com 'Mathematics Physics' Men's / Unisex American Apparel T: Euler's Identity (Color choice)

Physics / mathematics t-shirt features Euler's identity, voted "greatest equation ever" in a 2004 reader poll conducted by Physics World. Durable white flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable yellow flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color combination.

$ 17.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable red flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color combination.

$ 17.99

YellowIbis.com 'Evolution' Women's Heather Jersey T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable cream flex-print design on a heather jersey T. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color combination. NOTE: check sizing before ordering.

$ 17.99

YellowIbis.com 'Medical One Liners' Men's / Unisex Heavyweight T: I love brains (Color Choice)

"I love brains" science t-shirt features a heart made from brains. Perfect for your favorite biochemist, neurologist, medical professional, or zombie. Durable white and light pink flex-print design.

$ 19.99

YellowIbis.com 'Medical One Liners' Women's Heather Jersey T: I love brains (Raspberry Melange)

"I love brains" science t-shirt features a heart made from brains. Perfect for your favorite biochemist, neurologist, medical professional, or zombie. Durable black and light pink flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Medical One Liners' Women's Heavyweight T: I love brains (Color Choice)

"I love brains" science t-shirt features a heart made from brains. Perfect for your favorite biochemist, neurologist, medical professional, or zombie. Durable white and light pink flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Standard T: Research (Navy)

"Research is what I'm doing when I don't know what I'm doing." Quote by Wernher von Braun. A science t-shirt any scientist can relate to. Durable white and light blue flex-print design.

$ 16.99

YellowIbis.com 'One Liners' Men's / Unisex Standard T: Research (Khaki)

"Research is what I'm doing when I don't know what I'm doing." Quote by Wernher von Braun. A science t-shirt any scientist can relate to. Durable cream and navy flex-print design.

$ 16.99

YellowIbis.com 'One Liners' Women's Standard T: Research (Navy)

"Research is what I'm doing when I don't know what I'm doing." Quote by Wernher von Braun. A science t-shirt any scientist can relate to. Durable white and light blue flex-print design.

$ 16.99

YellowIbis.com 'One Liners' Women's Heather Jersey T: I blinded me with science (Melange Navy)

Chemistry t-shirt features the text "I blinded me with science" with a descriptive graphic. Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable yellow-orange flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex American Apparel T: I blinded me with science (Color choice)

Chemistry t-shirt features the text "I blinded me with science" with a descriptive graphic. Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable white flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Earth Positive T: I blinded me with science (Moss Green)

Chemistry t-shirt features the text "I blinded me with science" with a descriptive graphic. Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable neon orange flex-print design on a 100% organic cotton "Earth Positive" brand lightweight tee.

$ 22.99

YellowIbis.com 'Physics Symbols' Women's Heather Jersey T: Atomic Love (Color Choice)

Show your love for physics with a science t-shirt featuring an atom with a heart nucleus. Durable cream and yellow-orange flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Atomic Love (Color Choice)

Show your love for physics with a science t-shirt featuring an atom with a heart nucleus. Durable royal blue and non-metallic gray flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Women's Heavyweight T: Atomic Love (Color Choice)

Show your love for physics with a science t-shirt featuring an atom with a heart nucleus. Durable royal blue and non-metallic gray flex-print design.

$ 19.99

YellowIbis.com 'Symbols One Liners' Men's / Unisex American Apparel T: Dropping science (Black / Glow-in-the-dark)

Science t-shirt features a retro-style "dropping science" next to a cracked Erlenmeyer design. Special glow-in-the-dark flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Symbols One Liners' Women's Slim-Fit American Apparel T: Dropping science (Black / Glow-in-the-dark)

Science t-shirt features a retro-style "dropping science" next to a cracked Erlenmeyer design. Durable yellow flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Symbols One Liners' Men's / Unisex American Apparel T: Dropping science (Color choice)

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Sweet as glucose (Color choice)

Cute chemistry t-shirt shows you're "Sweet as"... glucose. Chemical structure of b-D-glucopyranose is displayed in the chair configuration. Durable fuzzy black flock-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: Sweet as glucose (Black)

Cute chemistry t-shirt shows you're "Sweet as"... glucose. Chemical structure of b-D-glucopyranose is displayed in the chair configuration. Durable pink flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Sweet as glucose (Raspberry Melange)

Cute chemistry t-shirt shows you're "Sweet as"... glucose. Chemical structure of b-D-glucopyranose is displayed in the chair configuration. Durable fuzzy white flock-print design on a heather jersey T. NOTE: check sizing before ordering. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Medical One Liners' Men's / Unisex Heavyweight T: I'm vaccinated (Colour Choice)

"I'm vaccinated" design features a syringe in place of the letter "i". Whether you are a medical professional, or just tired of vaccine denialism, show your vaccinated status proudly with this t-shirt. Durable white and yellow-gold flex-print design on your choice of t-shirt colour.

$ 19.99

YellowIbis.com 'Medical One Liners' Men's / Unisex Heavyweight T: I'm vaccinated (Colour Choice)

"I'm vaccinated" design features a syringe in place of the letter "i". Whether you are a medical professional, or just tired of vaccine denialism, show your vaccinated status proudly with this t-shirt. Durable black and yellow-gold flex-print design on your choice of t-shirt colour.

$ 19.99

YellowIbis.com 'Medical One Liners' Women's Heavyweight T: I'm vaccinated (Colour Choice)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Benzene (Color choice)

Benzene's chemical structure becomes a distinctive print on this chemistry t-shirt. Durable neon orange flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit American Apparel T: Benzene (Brown)

Benzene's chemical structure becomes a distinctive metallic print on this chemistry t-shirt. Durable metallic gold and orange flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Benzene (Color choice, Glow in the Dark)

Benzene's chemical structure becomes a distinctive glow-in-the-dark print on this chemistry t-shirt. Durable flex-print design on your choice of shirt color. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Standard T: Hot like capsaicin (Black)

Are you "hot like..." capsaicin? Chemistry t-shirt features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Durable red flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 16.99

YellowIbis.com 'Chemical Structures' Women's Standard T: Hot like capsaicin (Red)

Are you "hot like..." capsaicin? Chemistry t-shirt features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Durable yellow-orange flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 16.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Capcaicin Camisole (Red)

Camisole underwear features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Durable fuzzy yellow-orange flock-print design. Check sizing. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical One Liners' Women's Slim-Fit American Apparel T: Benzene Pirate (Black)

Our unique "Benzene Pirate" design, exclusive to YellowIbis.com. A unique chemistry t-shirt for the pirate chemist. Durable gray flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical One Liners' Men's / Unisex American Apparel T: Benzene Pirate (Black)

Our unique "Benzene Pirate" design, exclusive to YellowIbis.com. A unique chemistry t-shirt for the pirate chemist. Durable white flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical One Liners' Men's / Unisex American Apparel T: Benzene Pirate (Black)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex American Apparel Ringer T: 18-crown-6 Luck (Green / White)

Show your Irish luck with a unique 18-crown-6 design that looks like a clover. Add a little chemistry to St. Patrick's Day with this funny science t-shirt. Durable white flock-print design on a lightweight American Apparel ringer tee. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex American Apparel T: 18-crown-6 Luck (Kelly Green)

Show your Irish luck with a unique 18-crown-6 design that looks like a clover. Add a little chemistry to St. Patrick's Day with this funny science t-shirt. Durable yellow-orange flock-print design on a lightweight American Apparel T. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: 18-crown-6 Luck (Green Melange)

Show your Irish luck with a unique 18-crown-6 design that looks like a clover. Add a little chemistry to St. Patrick's Day with this funny science t-shirt. Durable yellow-orange flock-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Holiday 2009' Men's / Unisex Standard T: Menthol Candy Cane (Color Choice)

New Product! T-shirt features the chemical structure of (–)-L-menthol, the active ingredient in peppermint, together with a holiday candy cane. Durable white flex-print design. Holiday 2009 Limited Edition!

$ 15.99

YellowIbis.com 'Holiday 2009' Women's Standard T: Menthol Candy Cane (Color Choice)

$ 15.99

YellowIbis.com 'Holiday 2009' Men's / Unisex Standard T: Menthol Candy Cane (Color Choice)

$ 15.99

YellowIbis.com 'Holiday 2009' Handmade Wool Mittens: Newton's Law of Cooling (Red)

New Product! These special hand-knitted mittens are printed with Newton's Law of Cooling using white flex-print. Matching hat available. See www.vermontoriginals.com for more product information. Holiday 2009 Limited Edition!

$ 35.95

YellowIbis.com 'Holiday 2009' Handmade Wool Hat: Newton's Law of Cooling (Red)

New Product! This special hand-knitted wool hat is printed with Newton's Law of Cooling using white flex-print. Matching mittens available. See www.vermontoriginals.com for more product information. Holiday 2009 Limited Edition!

$ 35.95

YellowIbis.com 'Holiday 2009' Handmade Wool Mittens: Newton's Law of Cooling (Black)

New Product! These special hand-knitted mittens are printed with Newton's Law of Cooling using powder blue flex-print. Matching hat available. See www.vermontoriginals.com for more product information. Holiday 2009 Limited Edition!

$ 35.95

YellowIbis.com 'Academic One Liners' Men's/Unisex Standard T-Shirt: Scientific Method Typography (Black)

New Product! Science t-shirt features a typography design based on the scientific method. Durable neon yellow and white flex print design on a comfy standard t-shirt.

$ 16.99

YellowIbis.com 'Academic One Liners' Women's Standard T-Shirt: Scientific Method Typography (Black)

New Product! Science t-shirt features a typography design based on the scientific method. Durable neon yellow and white flex print design on a comfy standard t-shirt.

$ 16.99

YellowIbis.com 'Academic One Liners' Men's/Unisex Standard T-Shirt: Scientific Method Typography (Navy)

New Product! Science t-shirt features a typography design based on the scientific method. Durable powder blue and white flex print design on a comfy standard t-shirt.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T-Shirt: Grape Flavor (Purple)

New Product! Chemistry t-shirt features the structure of methyl anthranilate, a naturally occurring flavor in grapes and the most commonly used synthetic grape flavor. Durable lavender flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit American Apparel T-Shirt: Grape Flavor (Purple)

New Product! Chemistry t-shirt features the structure of methyl anthranilate, a naturally occurring flavor in grapes and the most commonly used synthetic grape flavor. Durable lavender flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Small Canvas Tote Bag: Grape Flavor (Purple)

New Product! Handy chemistry tote bag features the structure of methyl anthranilate, a naturally occurring flavor in grapes and the most commonly used synthetic grape flavor. Durable lavender flex-print design on a cotton tote. Want your own version? Create your own chemical structure product in our shirt designer!

$ 16.99

YellowIbis.com 'Chemistry Symbols' Men's / Unisex Standard T: Glowing Periodic Table (Color Choice)

New Product! Chemistry t-shirt features an abstracted periodic table in a special glow-in-the-dark flex print. Watch and see who gets it, and who doesn't!

$ 16.99

YellowIbis.com 'Chemistry Symbols' Women's Standard T: Glowing Periodic Table (Color Choice)

New Product! Chemistry t-shirt features an abstracted periodic table in a special glow-in-the-dark flex print. Watch and see who gets it, and who doesn't!

$ 16.99

YellowIbis.com 'Chemistry Symbols' Men's / Unisex Standard T: Periodic Table (Color Choice)

New Product! Chemistry t-shirt features an abstracted periodic table in powder blue flex print. Watch and see who gets it, and who doesn't!

$ 16.99

YellowIbis.com 'Chemistry Symbols' Men's / Unisex American Apparel T: Explosion Hazard (Colour Choice)

Chemistry / engineering t-shirt features the explosion hazard symbol. Durable neon orange flex-print design. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry Symbols' Men's / Unisex American Apparel T: Explosion Hazard (Colour Choice)

Chemistry / engineering t-shirt features the explosion hazard symbol. Durable yellow flex-print design. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry Symbols' Women's Slim-Fit American Apparel T: Explosion Hazard (Colour Choice)

Chemistry / engineering t-shirt features the explosion hazard symbol. Durable neon orange flex-print design. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Slim-Fit American Apparel T: That's how I roll (Color choice)

"That's how I roll"... with a gas cylinder cart down the hall. Funny science t-shirt for any lab scientist. Durable white flex-print on a premium American Apparel jersey t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex American Apparel Ringer T: That's how I roll (Black / White)

"That's how I roll"... with a gas cylinder cart down the hall. Funny science t-shirt for any lab scientist. Durable black flex-print on a lightweight American Apparel ringer t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex American Apparel T: That's how I roll (Color choice)

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Slim-Fit American Apparel T: Do the math (Color choice)

New Product! Math t-shirt features the text "do the math" in a high-contrast print. Durable yellow flex-print design on a soft American Apparel brand jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex American Apparel T: Do the math (Color choice)

New Product! Math t-shirt features the text "do the math" in a high-contrast print. Durable black flex-print design on a soft American Apparel brand jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex American Apparel T: Do the math (Color choice)

$ 19.99

YellowIbis.com 'Chemical One Liners' Men's / Unisex Standard T: Peace Love Chemistry (Color Choice)

"Peace Love Chemistry" is where it's at. Groovy chemistry t-shirt expresses life's essentials. Durable white and powder blue flex print design on a standard tee.

$ 16.99

YellowIbis.com 'Chemical One Liners' Women's Standard T: Peace Love Chemistry (Color Choice)

"Peace Love Chemistry" is where it's at. Groovy chemistry t-shirt expresses life's essentials. Durable white and powder blue flex print design on a standard tee.

$ 16.99

YellowIbis.com 'Chemical One Liners' Men's / Unisex Standard T: Peace Love Chemistry (Color Choice)

"Peace Love Chemistry" is where it's at. Groovy chemistry t-shirt expresses life's essentials. Durable white and light green flex print design on a standard tee.

$ 16.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Standard T: Penrose Triangle (Bright Green)

Mathematics t-shirt features a design based on the Penrose triangle, an optical illusion. Eye-catching graphic design. Special three colour flex-print design in neon green, neon yellow, and light green, on a standard weight t-shirt.

$ 16.99

YellowIbis.com 'Mathematics Symbols' Women's Standard T: Penrose Triangle (Black)

Mathematics t-shirt features a design based on the Penrose triangle, an optical illusion. Eye-catching graphic design. Special three colour flex-print design in neon yellow, powder blue, and light blue, on a standard weight t-shirt.

$ 16.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Standard T: Penrose Triangle (Black)

$ 16.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit American Apparel T: Oseltamivir Phosphate (Color Choice)

Chemistry t-shirt features the structure of oseltamivir phosphate, otherwise known as Roche's "Tamiflu". Effective against a variety of viruses including the H1N1 'swine flu'. Durable neon yellow flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex American Apparel T: Oseltamivir Phosphate (Color choice)

$ 19.99

YellowIbis.com 'Chemical Structures' Earth Positive Tote Bag: Oseltamivir Phosphate (Color Choice)

Handy chemical structure tote bag features the structure of oseltamivir phosphate, otherwise known as Roche's "Tamiflu". Effective against a variety of viruses including the H1N1 'swine flu'. Durable neon yellow flex-print design on a 100% organic cotton "Earth Positive" brand tote bag.

$ 16.99

YellowIbis.com 'Computer One Liners' Men's / Unisex American Apparel T: Datanörd (Color Choice)

"Datanörd", nerd Swedish-style, on this funny nerdy t-shirt. Durable yellow-orange flex-print on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Computer One Liners' Men's / Unisex American Apparel T: Datanörd (Glow in the Dark, Color Choice)

"Datanörd", nerd Swedish-style, on this funny nerdy t-shirt. Special glow in the dark flex-print on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Computer One Liners' Women's Slim-Fit American Apparel T: Datanörd (Color Choice)

"Datanörd", nerd Swedish-style, on this funny nerdy t-shirt. Durable yellow-orange flex-print on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Standard T: Pi Symbol (Black)

Gray and light blue 'pi' symbol design. The perfect mathematics t-shirt for Pi Day or any day! Durable flex-print design on a standard weight t-shirt.

$ 16.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Standard T: Pi Symbol (Red)

Black and neon orange 'pi' symbol design. The perfect mathematics t-shirt for Pi Day or any day! Durable flex-print design on a standard weight t-shirt.

$ 16.99

YellowIbis.com 'Mathematics Symbols' Women's Standard T: Pi Symbol (Black)

Red and neon orange 'pi' symbol design. The perfect mathematics t-shirt for Pi Day or any day! Durable flex-print design on a standard weight t-shirt.

$ 16.99

YellowIbis.com 'Academic One Liners' Men's / Unisex American Apparel T: Dropping Science Graffiti (Black)

"Dropping science". Urban graffiti style meets the science t-shirt. Durable white flex-print on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Slim-Fit American Apparel T: Dropping Science Graffiti (Black)

"Dropping science". Urban graffiti style meets the science t-shirt. Durable white flex-print on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex American Apparel T: Dropping Science Graffiti (Gold)

"Dropping science". Urban graffiti style meets the science t-shirt. Durable black flex-print on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Slim-Fit Ringer T: Evilutionist (White / Red)

"Evilutionist" is done retro-style on a ringer tee science t-shirt. Durable fuzzy red flock-print design on a Bella brand ringer t-shirt.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex American Apparel T: Evilutionist (Color Choice)

"Evilutionist" done retro-style on a comfy science t-shirt. Durable fuzzy navy flock-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex American Apparel Ringer T: Evilutionist (Color Choice)

"Evilutionist" is done retro-style on a ringer tee science t-shirt. Durable fuzzy navy flock-print design on a lightweight American Apparel ringer t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex American Apparel T: Synthetiker (Black)

Chemistry t-shirt features the word "Synthetiker" in a traditional Germanic 'Fractur' style font. Perfect for your favorite synthetic chemist. Male and female versions available. Durable white flex-print on a premium American Apparel jersey t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex American Apparel T: Synthetiker (Asphalt)

Chemistry t-shirt features the word "Synthetiker" in a traditional Germanic 'Fractur' style font. Perfect for your favorite synthetic chemist. Male and female versions available. Durable cream flex-print on a premium American Apparel jersey t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Slim-Fit American Apparel T: Synthetikerin (Black)

Chemistry t-shirt features the word "Synthetikerin" in a traditional Germanic 'Fractur' style font. Perfect for your favorite synthetic chemist. Male and female versions available. Durable cream flex-print on a premium American Apparel jersey t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Astronomy' Men's / Unisex Standard T: Galaxy (Navy Blue)

Various stars and planets form a galaxy across a navy blue standard medium-weight t-shirt. Astronomy t-shirt features a special three color flex-print design in light blue, royal blue, and neon yellow.

$ 17.99

YellowIbis.com 'Astronomy' Women's Standard T: Galaxy (Navy Blue)

$ 17.99

YellowIbis.com 'Astronomy' Kids T: Galaxy (Black, Glow in the Dark)

Various stars and planets form a galaxy across a black t-shirt. Astronomy t-shirt features a special glow-in-the-dark durable flex-print design on a 100% cotton kids tee.

$ 13.99

YellowIbis.com 'Varsity Symbols' Women's Slim-Fit Earth Positive T: Varsity Science (Color Choice)

Varsity-style "Science" in white and aqua flock-print on a 100% organic cotton "Earth Positive" brand lightweight tee.

$ 22.99

YellowIbis.com 'Varsity Symbols' Men's / Unisex Organic Jersey T: Varsity Science (Color Choice)

Varsity-style "Science" in white and aqua flock-print on a 100% certified organic cotton jersey t-shirt.

$ 22.99

YellowIbis.com 'Varsity Symbols' Earth Positive Tote Bag: Varsity Science (Color Choice)

Varsity-style "Science" in white and aqua flock-print on a 100% organic cotton "Earth Positive" brand tote bag.

$ 16.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Heavyweight T: Cow Pi (Brown)

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$ 19.99

YellowIbis.com 'Mathematics Symbols' Women's Longsleeved Jersey T: Cow Pi (Red)

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$ 22.99

YellowIbis.com 'Mathematics Symbols' Women's Heather Jersey T: Cow Pi (Brown Melange)

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$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Standard T: I love chemistry (Navy)

"I love chemistry" design features a three-neck round-bottom flask instead of a heart. Durable white, cream and gray flex-print design on a standard medium-weight T.

$ 17.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Standard T: I love chemistry (Khaki)

"I love chemistry" design features a three-neck round-bottom flask instead of a heart. Durable black, cream and gray flex-print design on a standard medium-weight T.

$ 17.99

YellowIbis.com 'Chemistry One Liners' Women's Standard T: I love chemistry (Navy)

"I love chemistry" design features a three-neck round-bottom flask instead of a heart. Durable white, cream and gray flex-print design on a standard medium-weight T.

$ 17.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Organic Jersey T: Vanillin (Natural Beige)

Chemistry t-shirt features the structure of methyl vanillin, the chemical responsible for most of vanilla's taste. Durable sand beige flock-print design on a 100% certified organic cotton jersey t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 22.99

YellowIbis.com 'Chemical Structures' Women's Perfect-Fit Organic Jersey T: Vanillin (Natural Beige)

$ 22.99

YellowIbis.com 'Chemical Structures' Small Canvas Tote Bag: Vanillin (Cream)

Handy chemistry tote bag features the structure of methyl vanillin, the chemical responsible for most of vanilla's taste. Durable sand beige flock-print design on convenient tote bag. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 16.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Hooded Longsleeved Sweatshirt: Newton's Law of Cooling (Color Choice)

Physics sweatshirt features Newton's Law of Cooling. Durable fuzzy aqua flock-print design on a cozy hooded longsleeved sweatshirt.

$ 33.99

YellowIbis.com 'Physics Symbols' Men's / Unisex American Apparel T: Newton's Law of Cooling (Color Choice)

Physics t-shirt features Newton's Law of Cooling. Durable fuzzy white flock-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Physics Symbols' Women's Hooded Longsleeved Sweatshirt: Newton's Law of Cooling (Color Choice)

Physics sweatshirt features Newton's Law of Cooling. Durable fuzzy light blue flock-print design on a cozy hooded longsleeved sweatshirt.

$ 33.99

YellowIbis.com 'Academic One Liners' Men's / Unisex American Apparel T: Facts are not Science (Colour Choice)

"Facts are not science - as the dictionary is not literature." Quote by Dr. Martin H. Fischer is featured on this science t-shirt. Durable neon orange flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Heavyweight T: Facts are not Science (Colour Choice)

"Facts are not science - as the dictionary is not literature." Quote by Dr. Martin H. Fischer is featured on this science t-shirt. Durable neon orange flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex American Apparel T: Facts are not Science (Colour Choice)

"Facts are not science - as the dictionary is not literature." Quote by Dr. Martin H. Fischer is featured on this science t-shirt. Durable navy blue flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Heavyweight T: Engineering World Tour (Color Choice)

"Engineering World Tour: No sports! Just drink." Show your love for engineering's favorite sport with this special two color flex-print.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Heavyweight T: Engineering World Tour (Color Choice)

"Engineering World Tour: No sports! Just drink." Show your love for engineering's favorite sport with this special two color flex-print.

$ 19.99

YellowIbis.com 'Engineering One Liners' Women's Heavyweight T: Engineering World Tour (Color Choice)

"Engineering World Tour: No sports! Just drink." Show your love for engineering's favorite sport with this special two color flex-print.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Heavyweight T: One test result (Color choice)

"One test result is worth one thousand expert opinions." Quote by Wernher von Braun. The perfect science t-shirt for bench workers and engineers! Durable white and powder blue flex-print design.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Longsleeved Sweatshirt: One test result (Navy)

"One test result is worth one thousand expert opinions." Quote by Wernher von Braun. The perfect science sweatshirt for bench workers and engineers! Durable white and cream flex-print design on a crewneck sweatshirt.

$ 27.99

YellowIbis.com 'Engineering One Liners' Women's Heather Jersey T: One test result (Color choice)

"One test result is worth one thousand expert opinions." Quote by Wernher von Braun. The perfect science t-shirt for bench workers and engineers! Durable white and powder blue flex-print design. NOTE: Please check sizing carefully.

$ 19.99

YellowIbis.com 'Astronomy One Liners' Men's / Unisex Heavyweight T: Made of stars (Black)

Astronomy t-shirt features the design "We are all made of stars". Almost all elements heavier than boron, including those in our own bodies, were formed long ago by nuclear reactions inside stars. Durable non-metallic gray and white flex-print design.

$ 19.99

YellowIbis.com 'Astronomy One Liners' Men's / Unisex Heavyweight T: Made of stars (Navy)

$ 19.99

YellowIbis.com 'Astronomy One Liners' Women's Heavyweight T: Made of stars (Black)

$ 19.99

YellowIbis.com 'Symbols One Liners' Men's / Unisex Heavyweight T: Ancient geek (Color choice)

Funny t-shirt features the text "ancient geek" written with greek lowercase symbols. Durable white flex-print design on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Symbols One Liners' Women's Slim-Fit T: Ancient geek (Color choice)

Funny t-shirt features the text "ancient geek" written with greek lowercase symbols. Durable white flex-print design on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Symbols One Liners' Women's Heavyweight T: Ancient geek (Color choice)

Funny t-shirt features the text "ancient geek" written with greek lowercase symbols. Durable white flex-print design on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Japanese Science (Color Choice)

High-contrast print science t-shirt says "Science" in Japanese. Durable yellow and neon yellow flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Women's Slim-Fit T: Japanese Science (Black)

High-contrast print science t-shirt says "Science" in Japanese. Durable neon pink and light pink flex-print design on a Bella t-shirt.

$ 19.99

YellowIbis.com 'One Liners' Women's Longsleeved Jersey T: Japanese Science (Black)

High-contrast print science t-shirt says "Science" in Japanese. Durable royal blue and light blue flex-print design.

$ 22.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Longsleeved T: Mad Scientist (Black)

Comfy longsleeved science t-shirt features "MAD SCIENTIST" down the left arm. Durable gray flock-print design.

$ 22.99

YellowIbis.com 'Academic One Liners' Women's Longsleeved Jersey T: Mad Scientist (Black)

Comfy longsleeved science t-shirt features "MAD SCIENTIST" down the left arm. Durable aqua flock-print design.

$ 22.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Longsleeved T: Mad Scientist (White)

Comfy longsleeved science t-shirt features "MAD SCIENTIST" down the left arm. Durable gray flock-print design.

$ 22.99

YellowIbis.com 'One Liners' Women's Slim-Fit American Apparel T: Science Colorblock (Color Choice)

"Science" in bold lettering is featured on this comfy premium American Apparel science t-shirt. White flock print on your choice of shirt color. NOTE: AA sizes small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex American Apparel T: Science Colorblock (Color Choice)

$ 19.99

YellowIbis.com 'One Liners' Small Canvas Tote Bag: Science Colorblock (Color Choice)

"Science" in bold lettering is featured on this handy tote bag. White flock print on your choice of bag color.

$ 16.99

YellowIbis.com 'Alchemy' Men's / Unisex Heavyweight T: Vitruvian Man (White)

"Vitruvian Man", Leonardo da Vinci, 1492. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Alchemy' Men's / Unisex Longsleeved T: Vitruvian Man (White)

"Vitruvian Man", Leonardo da Vinci, 1492. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 22.99

YellowIbis.com 'Alchemy' Women's Heavyweight T: Vitruvian Man (White)

"Vitruvian Man", Leonardo da Vinci, 1492. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Environmental Varsity' Men's / Unisex Organic Jersey T: Environmental Science (Light Blue)

Varsity-style 'Environmental Science' features a peace sign / weed emblem. Durable royal blue and forest green flex-print on a 100% certified organic cotton jersey t-shirt.

$ 22.99

YellowIbis.com 'Environmental Varsity' Women's Perfect-Fit Organic Jersey T: Environmental Science (Natural Beige)

Varsity-style 'Environmental Science' features a peace sign / weed emblem. Durable navy and forest green flex-print on a 100% certified organic cotton jersey t-shirt.

$ 22.99

YellowIbis.com 'Environmental Varsity' Men's / Unisex Organic Jersey T: Environmental Science (Natural Beige)

Varsity-style 'Environmental Science' features a peace sign / weed emblem. Durable navy and forest green flex-print on a 100% certified organic cotton jersey t-shirt.

$ 22.99

YellowIbis.com 'Geology Varsity' Men's / Unisex Heavyweight T: Geology with Hammer and Pick (Color Choice)

Varsity-style "Geology" with a hammer and pick symbol. Email us for a custom version of this geology t-shirt. Durable white and orange fuzzy flock design.

$ 19.99

YellowIbis.com 'Geology Varsity' Women's Heavyweight T: Geology with Hammer and Pick (Color Choice)

Varsity-style "Geology" with a hammer and pick symbol. Email us for a custom version of this geology t-shirt. Durable white and orange fuzzy flock design.

$ 19.99

YellowIbis.com 'Geology Varsity' Men's / Unisex Heavyweight T: Geology with Hammer and Pick (Color Choice)

Varsity-style "Geology" with a hammer and pick symbol. Email us for a custom version of this geology t-shirt. Durable navy and orange fuzzy flock design.

$ 19.99

YellowIbis.com 'Animal Sciences' Men's / Unisex Standard T: Marine Science Waves (Navy)

Marine science t-shirt features a three-colour wave pattern with the words "marine science". Durable light blue, royal blue, and white flex-print design.

$ 17.99

YellowIbis.com 'Animal Sciences' Women's Standard T: Marine Science Waves (Navy)

Marine science t-shirt features a three-colour wave pattern with the words "marine science". Durable light blue, royal blue, and white flex-print design.

$ 17.99

YellowIbis.com 'Animal Sciences' Small Canvas Tote Bag: Marine Science Waves (Natural Beige)

Handy tote bag features a three-colour wave pattern with the words "marine science". Durable light blue, royal blue, and navy blue flex-print design. Conveniently sized 100% cotton canvas tote.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Serotonin (Color choice)

Serotonin's chemical structure is indicated on this popular chemistry t-shirt. Serotonin is the 'happy chemical' synthesized in the brain that plays an important role in moods and in the functioning of the gut. Durable red flex-print design on your choice of shirt color. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's American Apparel Boatneck T: Serotonin (Red)

Serotonin's chemical structure is indicated on this popular chemistry t-shirt. Serotonin is the 'happy chemical' synthesized in the brain that plays an important role in moods and in the functioning of the gut. Durable black flex-print design, on a sheer jersey boatneck 3/4 sleeve tee. Perfect for layering! NOTE: AA runs small, check sizing carefully. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 24.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Serotonin (Color choice)

Serotonin's chemical structure is indicated on this popular chemistry t-shirt. Serotonin is the 'happy chemical' synthesized in the brain that plays an important role in moods and in the functioning of the gut. Durable light pink flex-print design. NOTE: Check sizing carefully. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Theobromine Heart (Raspberry Melange)

Chemistry t-shirt features a heart with the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! This special edition t-shirt was created for the ChocolateBytes.com Valentine's Day contest. Durable fuzzy flock-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Theobromine Heart (Brown Melange)

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Theobromine Heart (Pink Melange)

$ 19.99

YellowIbis.com 'Geology Symbols' Men's / Unisex Heavyweight T: Falling rocks (Color choice)

The perfect t-shirt for a field geologist. T-shirt features a "falling rocks" road warning sign. Durable orange and white flex-print design in two colors.

$ 19.99

YellowIbis.com 'Geology Symbols' Men's / Unisex Heavyweight T: Falling rocks (Color choice)

The perfect t-shirt for a field geologist. T-shirt features a "falling rocks" road warning sign. Durable orange and black flex-print design in two colors.

$ 19.99

YellowIbis.com 'Geology Symbols' Women's Heavyweight T: Falling rocks (Color choice)

The perfect t-shirt for a field geologist. T-shirt features a "falling rocks" road warning sign. Durable orange and white flex-print design in two colors.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Heavyweight T: Biohazard (Color choice)

Biochemistry t-shirt features the biohazard symbol in blaze orange. Durable orange flex-print design.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Slim-Fit T: Biohazard (Color choice)

Biochemistry t-shirt features the biohazard symbol in blaze orange. Durable orange flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Heavyweight T: Biohazard (Color choice)

Biochemistry t-shirt features the biohazard symbol in blaze orange. Durable orange flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Eco Cotton Tote Bag: Science (Color Choice)

The ultimate science tote! Roomy cotton tote features the names of various disciplines associated with "Science". Durable neon yellow and teal green flex-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'One Liners' Eco Cotton Tote Bag: Science (Color Choice)

The ultimate science tote! Roomy cotton tote features the names of various disciplines associated with "Science". Durable navy blue and non-metallic gray flex-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'One Liners' Eco Cotton Tote Bag: Science (Color Choice)

The ultimate science tote! Roomy cotton tote features the names of various disciplines associated with "Science". Durable orange and royal blue flex-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Environmental One Liners' Men's / Unisex Tie Dye T: Peace Love and Science (Baby Blue)

"Peace Love & Science" as a groovy retro style science t-shirt. Durable neon yellow and navy flex-print on a retro tie dye t-shirt. Yeah, baby!

$ 19.99

YellowIbis.com 'Environmental One Liners' Men's / Unisex American Apparel T: Peace Love and Science (Color Choice)

"Peace Love & Science" as a groovy retro style science t-shirt. Yeah, baby! Durable light blue and yellow-orange flex-print on a premium American Apparel jersey t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Environmental One Liners' Women's Slim-Fit American Apparel T: Peace Love and Science (Color Choice)

"Peace Love & Science" as a groovy retro style science t-shirt. Yeah, baby! Durable neon yellow and yellow-orange flex-print on a premium American Apparel jersey t-shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Astronomy One Liners' Men's / Unisex Standard T: Mission Venus (Navy Blue)

Will we get more than we bargained for when we visit Venus? Durable white and light blue flex-print design on a standard medium-weight t-shirt. Limited time guest design by Amorphia Apparel.

$ 19.99

YellowIbis.com 'Astronomy One Liners' Men's / Unisex Standard T: Mission Venus (Khaki)

Will we get more than we bargained for when we visit Venus? Durable white and yellow-orange flex-print design on a standard medium-weight t-shirt. Limited time guest design by Amorphia Apparel.

$ 19.99

YellowIbis.com 'Astronomy One Liners' Men's / Unisex Standard T: Mission Venus (Navy Blue)

Will we get more than we bargained for when we visit Venus? Durable white and light blue flex-print design on a standard medium-weight t-shirt. Limited time guest design by Amorphia Apparel.

$ 19.99

YellowIbis.com 'Physics Symbols' Women's Heavyweight T: Feynman diagram 2 (Color choice)

Physics t-shirt features a stylized version of a so-called 'penguin' Feynman diagram. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Feynman diagram 2 (Color choice)

Physics t-shirt features a stylized version of a so-called 'penguin' Feynman diagram. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Feynman diagram 2 (Color choice)

Physics t-shirt features a stylized version of a so-called 'penguin' Feynman diagram. Durable navy blue flex-print design.

$ 19.99

YellowIbis.com 'Alchemy' Men's / Unisex Heavyweight T: Alchymia (White)

"Alchymia", 1574, Leonhard Thurneysser. Alchemy personified as a woman. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Alchemy' Women's Longsleeved Jersey T: Alchymia (White)

"Alchymia", 1574, Leonhard Thurneysser. Alchemy personified as a woman. Digital direct printing method inks the design directly into the shirt.

$ 22.99

YellowIbis.com 'Alchemy' Women's Heavyweight T: Alchymia (White)

"Alchymia", 1574, Leonhard Thurneysser. Alchemy personified as a woman. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Benzo[a]pyrene (Color choice)

Chemistry t-shirt features the chemical structure of benzo[a]pyrene, a well-known environmental carcinogen and part of the PAH class of compounds. Durable neon yellow flex print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Benzo[a]pyrene (Color choice)

Chemistry t-shirt features the chemical structure of benzo[a]pyrene, a well-known environmental carcinogen and part of the PAH class of compounds. Durable neon orange flex-print design on a heather jersey T. NOTE: check sizing before ordering. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Benzo[a]pyrene (Glow-in-the-dark, Color choice)

Chemistry t-shirt features the chemical structure of benzo[a]pyrene, a well-known environmental carcinogen and part of the PAH class of compounds. Special glow-in-the-dark flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Deluxe Hooded Sweatshirt: Ethanol (Black)

Sweatshirt features the 3D structure of ethanol with abstract atom colorization. Deluxe science hoody has the design repeated on both the front of the sweatshirt and the right side of the hood. Unique chemistry sweatshirt! Durable two color flex-print design in neon yellow and blue on a cozy hooded longsleeved sweatshirt.

$ 39.99

YellowIbis.com 'Chemical Structures' Women's Deluxe Hooded Sweatshirt: Ethanol (Red)

Sweatshirt features the 3D structure of ethanol with abstract atom colorization. Deluxe science hoody has the design repeated on both the front of the sweatshirt and the right side of the hood. Unique chemistry sweatshirt! Durable two color flex-print design in black and royal blue on a cozy hooded longsleeved sweatshirt.

$ 39.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Deluxe Hooded Sweatshirt: Ethanol (Royal Blue)

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$ 39.99

YellowIbis.com 'Academic One Liners' Kids T: Writable whiteboard (Color Choice)

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$ 14.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Standard T: Writable whiteboard (Color Choice)

$ 17.99

YellowIbis.com 'Academic One Liners' Small Canvas Tote Bag: Writable whiteboard (Color Choice)

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$ 16.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex American Apparel T: Mathematicians ask y (Color choice)

Math t-shirt features the text "Mathematicians ask y". Durable yellow-orange flex-print design on a soft American Apparel brand jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Slim-Fit American Apparel T: Mathematicians ask y (Color choice)

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex American Apparel T: Mathematicians ask y (Color choice)

Math t-shirt features the text "Mathematicians ask y". Durable white flex-print design on a soft American Apparel brand jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Burnt out postdoc (Sky Blue)

Science t-shirt features "burnt out postdoc" in a distressed font. Perfect for the current, or recovering, academic. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Slim-Fit American Apparel T: Burnt out postdoc (Sky Blue)

Science t-shirt features "burnt out postdoc" in a distressed font. Perfect for the current, or recovering, academic. Digital direct printing method inks the design directly into the shirt. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Burnt out postdoc (Natural Beige)

Science t-shirt features "burnt out postdoc" in a distressed font. Perfect for the current, or recovering, academic. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Heavyweight T: Sports Evolution (Color Choice)

The evolution of sports. Durable yellow-orange flex-print design on your choice of shirt color. Limited time guest design.

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Heather Jersey T: Sports Evolution (Color Choice)

The evolution of sports. Durable yellow-orange flex-print design on your choice of shirt color. Limited time guest design. NOTE: please check sizing.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Heavyweight T: Sports Evolution (Color Choice)

The evolution of sports. Durable navy flex-print design on your choice of shirt color. Limited time guest design.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Testosterone (Color choice)

Chemistry t-shirt features the chemical structure of testosterone (17b-hydroxy-4-androsten-3-one). Durable white flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Longsleeved American Apparel T: Testosterone (Black)

Longsleeved chemistry t-shirt features the chemical structure of testosterone (17b-hydroxy-4-androsten-3-one). Durable blue flex-print design on an American Apparel longsleeved jersey T. NOTE: AA runs small, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 22.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Testosterone (Color choice)

Chemistry t-shirt features the chemical structure of testosterone (17b-hydroxy-4-androsten-3-one). Durable blue flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Mathematics' Men's / Unisex Heavyweight T: Heart Surface (Color Choice)

Math t-shirt features the sextic equation for a heart surface, surrounded by a stylized y = 0 cross section of that surface. Durable gray and white flex-print design.

$ 19.99

YellowIbis.com 'Mathematics' Large 2.25" Buttons: Heart Surface

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$ 5.99

YellowIbis.com 'Mathematics' Women's Heavyweight T: Heart Surface (Color Choice)

Math t-shirt features the sextic equation for a heart surface, surrounded by a stylized y = 0 cross section of that surface. Durable red and white flex-print design.

$ 19.99

YellowIbis.com 'Computer Symbols' Women's Slim-Fit American Apparel T: Pixel Hearts (Black)

Pixel hearts slowly float off into the sky. Fun design for computer geeks and gamers. Durable red flex-print design on an American Apparel jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Computer Symbols' Men's / Unisex American Apparel T: Pixel Hearts (Asphalt)

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$ 19.99

YellowIbis.com 'Computer Symbols' Eco Cotton Tote Bag: Pixel Hearts (Black)

Pixel hearts slowly float off into the sky. Fun design for computer geeks and gamers. Durable red flex-print design. Large-size tote bag is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Computer One Liners' Men's / Unisex Heavyweight T: Hello World (Black)

The classic "hello world" test, done retro style with a pixel font and an amber monochrome look. Durable yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'Computer One Liners' Men's / Unisex Heavyweight T: Hello World (Black)

The classic "hello world" test, done retro style with a pixel font and a green monochrome look. Durable neon green flex-print design.

$ 19.99

YellowIbis.com 'Computer One Liners' Women's Heavyweight T: Hello World (Black)

The classic "hello world" test, done retro style with a pixel font and an amber monochrome look. Durable yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit American Apparel T: Benzene Glitter (Color choice)

Chemistry t-shirt features benzene's chemical structure as a unique glittery print. Durable blue 'glitz' glitter flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Benzene (Color choice, Glow in the Dark)

Chemistry t-shirt features benzene's chemical structure as a unique glow-in-the-dark print. Durable flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Benzene (Color choice, Glow in the Dark)

Chemistry t-shirt features benzene's chemical structure as a unique glow-in-the-dark print. Durable flex-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Biochemistry One Liners' Men's / Unisex AA Ringer T: DNA Detroit Ninja Academy (Blue)

"DNA, Detroit Ninja Academy". Pun on DNA is done retro-style on a ringer biochemistry tee. Limited-time guest design in durable flex-print on a lightweight American Apparel T. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Biochemistry One Liners' Women's Heather Jersey T: DNA Detroit Ninja Academy (Color Choice)

"DNA, Detroit Ninja Academy". Pun on DNA is done retro-style on a biochemistry heather jersey tee. Limited-time guest design in durable white flex-print on your choice of t-shirt color. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Biochemistry One Liners' Men's / Unisex AA Ringer T: DNA Detroit Ninja Academy (White)

$ 19.99

YellowIbis.com 'Geology One Liners' Men's / Unisex Heavyweight T: Tuff schist (Color choice)

Geology t-shirt features the text "Tuff Schist". An old geology joke. Durable forest green flex-print design.

$ 19.99

YellowIbis.com 'Geology One Liners' Men's / Unisex Heavyweight T: Tuff schist (Color choice)

Geology t-shirt features the text "Tuff Schist". An old geology joke. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Geology One Liners' Women's Slim-Fit T: Tuff schist (Color choice)

Geology t-shirt features the text "Tuff Schist". An old geology joke. Durable light green flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Geology Symbols' Large 2.25" Buttons: I brake for rocks

Buttons feature an "I brake for rocks" road warning sign with caption. If you've ever tried to drive somewhere with a geologist, you know how true this is! 5-pack means you can share.

$ 5.99

YellowIbis.com 'Geology Symbols' Large 2.25" Buttons: Hammer and Pick

Buttons feature the "hammer and pick" symbol, the traditional emblem of mining operations, mining guilds and geologists. 5-pack means you can share!

$ 5.99

YellowIbis.com 'Chemical Structures' Large 2.25" Buttons: Caffeine

Caffeine's chemical structure is displayed on a pack of buttons. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. 5-pack means you can share!

$ 5.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Ferrocene (Orange)

Chemistry t-shirt features the structure of ferrocene, the first 'sandwich' organometallic compound. Ferrocene's discovery in 1951/52 marks the beginning of the era of modern organometallic chemistry. Durable yellow flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: Ferrocene (Red)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Ferrocene (Navy Blue)

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Better living through chemistry (Royal Blue)

"Better living through chemistry". YellowIbis does Fatboy Slim remixing DuPont's famous motto of 1935, "Better Things for Better Living … Through Chemistry”. Durable flex-print design on a fun science t-shirt.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Slim-Fit T: Better living through chemistry (Navy)

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Better living through chemistry (Orange)

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Standard T: Science Funding (Black)

"Science funding: now with more rainbows." Show your love for the funding that makes the world go round, with this retro-style high contrast design science tee. Durable three color flex-print.

$ 18.99

YellowIbis.com 'Academic One Liners' Women's Standard T: Science Funding (Light Blue)

"Science funding: now with more rainbows." Show your love for the funding that makes the world go round, with this retro-style high contrast design science tee. Durable three color flex-print.

$ 18.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Standard T: Science Funding (Black)

"Science funding: now with more rainbows." Show your love for the funding that makes the world go round, with this retro-style high contrast design science tee. Durable three color flex-print.

$ 18.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Mad Scientist (Color choice)

"occupation: mad scientist". This science t-shirt says it all! Durable white flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Women's Slim-Fit T: Mad Scientist (Color choice)

"occupation: mad scientist". This science t-shirt says it all! Durable white flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Mad Scientist (Color choice)

"occupation: mad scientist". This science t-shirt says it all! Durable white flex-print design.

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable white flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color choice.

$ 17.99

YellowIbis.com 'Evolution' Men's / Unisex Longsleeved Sweatshirt: Darwin's Evolutionary Tree (Navy)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable flex-print design. YellowIbis is the original maker of this t-shirt design. Durable cream flex-print design on a warm crewneck sweatshirt.

$ 25.99

YellowIbis.com 'Evolution' Women's Heavyweight T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable white flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color choice.

$ 17.99

YellowIbis.com 'Alchemy' Men's / Unisex Heavyweight T: Green lion (White)

From "Philosophia Reformata", Johann Mylius, 1622. Classic alchemical imagery of the green lion eating the sun (aqua regia dissolving gold). Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Alchemy' Women's Longsleeved Jersey T: Green lion (White)

$ 22.99

YellowIbis.com 'Alchemy' Women's Slim-Fit AA T: Green lion (White)

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Heavyweight T: Dinosaur Love (Natural Beige)

Biology t-shirt features an evolution-incorrect design features a dinosaur who loves people. Durable forest green and red flex-print design.

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Heather Jersey T: Dinosaur Love (Sky Blue Melange)

Biology t-shirt features an evolution-incorrect design features a dinosaur who loves people. Durable forest green and red flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Heavyweight T: Dinosaur Love (Banana Yellow)

Biology t-shirt features an evolution-incorrect design features a dinosaur who loves people. Durable forest green and red flex-print design.

$ 19.99

YellowIbis.com 'Mathematics' Men's / Unisex Heavyweight T: Sierpinski Carpet (Color Choice)

Mathematics t-shirt features a "Sierpinski Carpet" fractal, named after Polish mathematician Wacław Franciszek Sierpiński who first described it. Durable yellow flex-print design. Email us for custom colour combinations.

$ 19.99

YellowIbis.com 'Mathematics' Men's / Unisex Heavyweight T: Sierpinski Carpet (Color Choice)

Mathematics t-shirt features a "Sierpinski Carpet" fractal, named after Polish mathematician Wacław Franciszek Sierpiński who first described it. Durable red flex-print design. Email us for custom colour combinations.

$ 19.99

YellowIbis.com 'Mathematics' Men's / Unisex Heavyweight T: Sierpinski Carpet (Color Choice)

Mathematics t-shirt features a "Sierpinski Carpet" fractal, named after Polish mathematician Wacław Franciszek Sierpiński who first described it. Durable navy flex-print design. Email us for custom colour combinations.

$ 19.99

YellowIbis.com 'Varsity Evolution' Men's / Unisex Standard T: Team Science (Navy)

Yellow-orange flex-print "team science" design on a standard weight navy t-shirt.

$ 16.99

YellowIbis.com 'Varsity Evolution' Eco Cotton Tote Bag: Team Science (Black)

Roomy cotton tote features our "team science" design. Durable red flex-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Varsity Evolution' Women's Standard T: Team Science (Navy)

Yellow-orange flex-print "team science" design on a standard weight navy t-shirt.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's / Unisex American Apparel T: Benzo[a]pyrene (Glow in the Dark, Color Choice)

Chemistry t-shirt features the chemical structure of benzo[a]pyrene, a well-known environmental carcinogen and part of the PAH class of compounds. Special glow-in-the-dark flex design on a comfy American Apparel jersey tee. NOTE: AA runs small, check size chart and size up as necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Longsleeved American Apparel T: Benzo[a]pyrene (Black)

Chemistry t-shirt features the chemical structure of benzo[a]pyrene, a well-known environmental carcinogen and part of the PAH class of compounds. Durable red flex-print design on an American Apparel longsleeved jersey T. NOTE: AA runs small, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 22.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit American Apparel T: Benzo[a]pyrene (Glow in the Dark, Color Choice)

Chemistry t-shirt features the chemical structure of benzo[a]pyrene, a well-known environmental carcinogen and part of the PAH class of compounds. Special glow-in-the-dark flex design on a comfy American Apparel jersey tee. NOTE: AA runs small, check size chart and size up as necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Symbols' Large 2.25" Buttons: Skull and Pipets

Buttons feature our own Skull and Pipets symbol. For the bad a-- bench workers out there. 5-pack means you can share!

$ 5.99

YellowIbis.com 'Mathematics Symbols' Large 2.25" Buttons: Pi Symbol (Teal / Orange)

Buttons feature a two-color 'pi' symbol design. Perfect for Pi Day or any day. 5-pack means you can share!

$ 5.99

YellowIbis.com 'Mathematics Symbols' Large 2.25" Buttons: Pi Symbol (Black / White)

Buttons feature a black and white 'pi' symbol design. Perfect for Pi Day or any day. 5-pack means you can share!

$ 5.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Belushi's Science (Black)

T-shirt features "SCIENCE" across the chest as a play on Belushi's famous "COLLEGE" shirt. Durable flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Cap: Belushi's Science (Black)

Baseball cap features "SCIENCE" across the front as a play on Belushi's famous "COLLEGE" shirt. Durable white flex-print design on a baseball cap.

$ 12.99

YellowIbis.com 'One Liners' Women's Slim-Fit T: Belushi's Science (Black)

T-shirt features "SCIENCE" across the chest as a play on Belushi's famous "COLLEGE" shirt. Durable flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Eco Cotton Tote Bag: Skull and Pipets (Black)

Our unique Skull and Pipets symbol, exclusive to YellowIbis.com. For the bad a** bench workers out there! Durable white flock-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Biochemistry Symbols' Eco Cotton Tote Bag: Skull and Pipets (Natural Beige)

Our unique Skull and Pipets symbol, exclusive to YellowIbis.com. For the bad a** bench workers out there! Durable black flock-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Biochemistry Symbols' Small Canvas Tote Bag: Skull and Pipets (Black)

Our unique Skull and Pipets symbol, exclusive to YellowIbis.com. For the bad a** bench workers out there! Durable red flock-print design. Conveniently sized 100% cotton canvas tote.

$ 16.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Heavyweight T: Biohazard Variant (Black)

Biochemistry t-shirt features a stylized take on the biohazard symbol. Durable flex-print design in yellow and orange.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Slim-Fit T: Biohazard Variant (Black / Neon)

Biochemistry t-shirt features a stylized take on the biohazard symbol. Durable flex-print design in vivid neon yellow and neon pink.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Heavyweight T: Biohazard Variant (Black)

Biochemistry t-shirt features a stylized take on the biohazard symbol. Durable flex-print design in light blue and yellow.

$ 19.99

YellowIbis.com 'Environmental Symbols' Women's Slim-Fit Earth Positive T: Water Peace (Green)

Peace sign has a cut-out wetlands / cattails motif. Durable light green flex-print design on a 100% organic cotton "Earth Positive" brand lightweight tee.

$ 22.99

YellowIbis.com 'Environmental Symbols' Men's / Unisex Organic Jersey T: Water Peace (Light Blue)

Peace sign has a cut-out wetlands / cattails motif. 100% certified organic cotton jersey t-shirt. Durable navy flex-print design.

$ 22.99

YellowIbis.com 'Environmental Symbols' Eco Cotton Tote Bag: Water Peace (Color Choice)

Roomy cotton tote features our "peace sign" design with a cut-out wetlands / cattails motif. Durable royal blue and light blue flex-print design. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit AA Jersey T: EDTA (Color Choice)

EDTA's chemical structure is featured on this unique chemistry t-shirt. EDTA (ethylenediaminetetraacetic acid) is a versatile chelating agent in widespread use. Durable neon yellow flex-print design on an American Apparel brand t-shirt. NOTE: AA runs small, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: EDTA (Color Choice)

EDTA's chemical structure is featured on this unique chemistry t-shirt. EDTA (ethylenediaminetetraacetic acid) is a versatile chelating agent in widespread use. Durable white flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: EDTA (Color Choice)

EDTA's chemical structure is featured on this unique chemistry t-shirt. EDTA (ethylenediaminetetraacetic acid) is a versatile chelating agent in widespread use. Durable navy flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Heavyweight T: Science's Secret Ingredient (Navy Blue)

"Beer: Science's Secret Ingredient" is featured on this science t-shirt. Simultaneously work-inhibiting and thought-stimulating, show your love for this complex multicomponent solution! Durable yellow and white flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Science's Secret Ingredient (Natural Beige)

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Science's Secret Ingredient (Navy Blue)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Chocolate Theobromine (Color Choice)

Chemistry t-shirt features the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable brown flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Chocolate Theobromine (Color Choice)

Chemistry t-shirt features the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable beige flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Longsleeved Jersey T: Chocolate Theobromine (Chocolate Brown)

Chemistry t-shirt features the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable cream flex-print design.

$ 22.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Standard T: Famous Last Words (Color Choice)

"Famous last words in Chemistry..." are explained on this chemistry t-shirt. Durable white and yellow-orange flex-print design.

$ 16.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Standard T: Famous Last Words (Color Choice)

"Famous last words in Chemistry..." are explained on this chemistry t-shirt. Durable white and neon yellow flex-print design.

$ 16.99

YellowIbis.com 'Chemistry One Liners' Women's Standard T: Famous Last Words (Color Choice)

"Famous last words in Chemistry..." are explained on this chemistry t-shirt. Durable white and yellow-orange flex-print design.

$ 16.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Customize the voodoo doll! (Customizable text, Color)

If you're working in a mid-level academic position, chances are you've got some frustration that needs diverting. Look no further! Name your demon on our voodoo-doll t-shirt. Use safety pins (not included) for added emphasis. Durable yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Slim-Fit T: Customize the voodoo doll! (Customizable text, Color)

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Customize the voodoo doll! (Customizable text, Color)

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: Keepin' it real (Black)

"Keepin' it Real"... as in the set of real numbers. The letter "R" is in a double struck font on this math t-shirt, to match the mathematical symbol. Durable two-colour flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: Keepin' it real (Red)

"Keepin' it Real"... as in the set of real numbers. The letter "R" is in a double struck font on this math t-shirt, to match the mathematical symbol. Durable two-colour flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Heavyweight T: Keepin' it real (Black)

"Keepin' it Real"... as in the set of real numbers. The letter "R" is in a double struck font on this math t-shirt, to match the mathematical symbol. Durable two-colour flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Hot like capsaicin (Flame Red)

"Hot like..." capsaicin. Chemistry t-shirt features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Durable black flex-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Hot like capsaicin (Black)

"Hot like..." capsaicin. Chemistry t-shirt features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Durable red flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's V-Neck T: Hot like capsaicin (Black)

"Hot like..." capsaicin. Chemistry t-shirt features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Durable red flex-print design on an Anvil V-neck tee. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Engineering One Liners' Women's Heavyweight T: Engineering's secret ingredient (Heather Grey)

Beer, engineering's secret ingredient! Engineering t-shirt features a durable orange and navy flex-print design.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Heavyweight T: Engineering's secret ingredient (Royal Blue)

Beer, engineering's secret ingredient! Engineering t-shirt features a durable yellow and yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Heavyweight T: Engineering's secret ingredient (Heather Grey)

Beer, engineering's secret ingredient! Engineering t-shirt features a durable orange and navy flex-print design.

$ 19.99

YellowIbis.com 'Engineering One Liners' Women's Heavyweight T: What an engineer looks like (Customizable text, Navy Blue)

"This is what an engineer looks like". Our unique engineering t-shirt is perfect for those times when you get told that you don't "look" like an engineer! Featured as one of Seed Magazine's "Daily Zeitgeist" for March 2006. The text is customizable, if you want to modify it to say something detailed about you or your specific field. Durable flex-print design.

$ 19.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Heavyweight T: What an engineer looks like (Customizable text, Forest Green)

$ 19.99

YellowIbis.com 'Engineering One Liners' Women's Longsleeved Jersey T: What an engineer looks like (Customizable text, Na

$ 22.99

YellowIbis.com 'One Liners' Men's / Unisex American Apparel T: Research (Asphalt)

"Research is what I'm doing when I don't know what I'm doing." Quote by Wernher von Braun. A science t-shirt any scientist can relate to! Durable white and cream flex-print design on an American Apparel tee. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Organic Jersey T: Research (Natural Beige)

"Research is what I'm doing when I don't know what I'm doing." Quote by Wernher von Braun. A science t-shirt any scientist can relate to! Durable maroon and orange flex-print design on a 100% certified organic cotton jersey t-shirt.

$ 22.99

YellowIbis.com 'One Liners' Women's Slim-Fit American Apparel T: Research (Asphalt)

$ 19.99

YellowIbis.com 'Geology One Liners' Men's / Unisex Standard T: I date rocks (Color Choice)

The perfect t-shirt for your rock-dating geologist. Durable white and yellow-orange flex-print design on a standard tee.

$ 16.99

YellowIbis.com 'Geology One Liners' Women's Standard T: I date rocks (Color Choice)

The perfect t-shirt for your rock-dating geologist. Durable white and neon pink flex-print on a standard tee.

$ 16.99

YellowIbis.com 'Geology One Liners' Men's / Unisex Standard T: I date rocks (Color Choice)

The perfect t-shirt for your rock-dating geologist. Durable orange and navy flex-print design on a standard tee.

$ 20.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Arsole (Black)

Use this chemistry t-shirt to educate your colleagues on the little-known structure of arsole. Durable flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Arsole (Black)

Use this chemistry t-shirt to educate your colleagues on the little-known structure of arsole. Durable flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Arsole (Natural Beige)

Use this chemistry t-shirt to educate your colleagues on the little-known structure of arsole. Durable flex-print design.

$ 19.99

YellowIbis.com 'Alchemy' Men's / Unisex Standard T: Carpi's Skeletons, Front and Back (White)

"Isagogae breves per lucidae ac uberrimae in Anatomiam human corporis...", Jacopo Berengario da Carpi, 1523. The front view skeleton woodcut image is on the front of the shirt, and the rear view skeleton image is on the back. Note that the original image has ageing and fading. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 17.99

YellowIbis.com 'Alchemy' Women's Longsleeved Jersey T: Carpi's Skeletons, Front and Back (White)

$ 22.99

YellowIbis.com 'Alchemy' Women's Standard T: Carpi's Skeletons, Front and Back (White)

$ 17.99

YellowIbis.com 'Academic One Liners' Women's T: Grad student crosshairs (Color choice)

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$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex T: Grad student crosshairs (Color choice)

Feel like a moving target in the lab? Display your perspective visually with this crosshairs design grad student t-shirt. Durable white flex-print design in your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex T: Grad student crosshairs (Color choice)

Feel like a moving target in the lab? Display your perspective visually with this crosshairs design grad student t-shirt. Durable black flex-print design in your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Heavyweight T: Skull and Pipets (Natural Beige)

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Longsleeved Jersey T: Skull and Pipets (Black)

$ 22.99

YellowIbis.com 'Biochemistry Symbols' Women's Slim-Fit AA Jersey T: Skull and Pipets (Black)

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Estrogen (Color choice)

Chemistry t-shirt features the chemical structure of estrogen (beta-estradiol). Durable light pink flex-print design on a heather jersey T. NOTE: check sizing before ordering. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Estrogen Glitter (Color choice)

Chemistry t-shirt features the chemical structure of estrogen (beta-estradiol). Special purple 'glitz' glitter flex-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Estrogen (Color choice)

Chemistry t-shirt features the chemical structure of estrogen (beta-estradiol). Durable neon pink flex-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Camisole and Thong (Color Choice)

Matching camisole and thong set features a neon pink flex-print estrogen (beta-estradiol) molecule across the front of the camisole. Check sizing.

$ 26.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Long Tank (Color Choice)

Cute fitted tank features a light pink flock-print estrogen (beta-estradiol) molecule across the front. Mix and match with our 'shorties' estrogen underwear. Longer length tank, check sizing.

$ 17.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Long Tank (Color Choice)

Cute fitted tank features a magenta flock-print estrogen (beta-estradiol) molecule across the front. Mix and match with our 'shorties' estrogen underwear. Longer length tank, check sizing.

$ 17.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Shorties (Light Pink)

Cute 'shorties' style panties feature a magenta flock-print estrogen (beta-estradiol) molecule on the rear. Mix and match with our estrogen camisole or t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Shorties (Black)

Cute 'shorties' style panties feature a light pink flock-print estrogen (beta-estradiol) molecule on the rear. Mix and match with our estrogen camisole or t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Shorties (White)

Cute 'shorties' style panties feature a magenta flock-print estrogen (beta-estradiol) molecule on the rear. Mix and match with our estrogen camisole or t-shirt.

$ 13.99

YellowIbis.com 'One Liners' Women's Slim-Fit American Apparel T: I blinded me with science (Color Choice)

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex American Apparel T: I blinded me with science (Color Choice)

Chemistry t-shirt features the text "I blinded me with science" with a descriptive graphic. Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable black flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex AA Ringer T: I blinded me with science (Black / White)

Chemistry t-shirt features the text "I blinded me with science" with a descriptive graphic. Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable white flex-print design on a lightweight American Apparel ringer T. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Heather Jersey T: Heart of Au (Color choice)

Searching for a heart of gold? Look no further. Metallic gold flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Perfect-Fit Organic T: Heart of Au (Color choice)

Searching for a heart of gold? Look no further. Metallic gold flex-print design on a 100% certified organic cotton t-shirt.

$ 22.99

YellowIbis.com 'Chemistry One Liners' Eco Cotton Tote Bag: Heart of Au (Color choice)

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$ 17.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: Caffeine (Color choice)

Caffeine's chemical structure is displayed on this classic chemistry t-shirt. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. Durable cream flex-print design on your choice of t-shirt color. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex American Apparel Ringer T: Caffeine (Melange Brown)

Caffeine's chemical structure is displayed on this classic chemistry t-shirt. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. Durable sand brown flock-print design on a melange American Apparel ringer t-shirt. NOTE: AA runs small, check size chart and size up if necessary. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Caffeine (Color choice)

Caffeine's chemical structure is displayed on this classic chemistry t-shirt. Caffeine is the stimulant and diuretic found in coffee, tea and carbonated drinks. Durable gold-yellow flex-print design on your choice of t-shirt color. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Environmental One Liners' Men's / Unisex Organic Jersey T: You people (Natural Beige)

T-shirt features a rough scribble Earth design with the text "you people are killing me". Durable navy and green flex-print design on a 100% certified organic cotton jersey t-shirt. Limited time guest design.

$ 22.99

YellowIbis.com 'Environmental One Liners' Men's / Unisex Organic Jersey T: You people (Black)

T-shirt features a rough scribble Earth design with the text "you people are killing me". Durable royal blue and neon green flex-print design on a 100% certified organic cotton jersey t-shirt. Limited time guest design.

$ 22.99

YellowIbis.com 'Environmental One Liners' Women's Perfect-Fit Organic Jersey T: You people (Natural Beige)

$ 22.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Standard T: Engineer's Glass (Color Choice)

Engineering t-shirt features the classic engineering joke on perception. Durable white and yellow-orange flex-print design on a standard tee.

$ 16.99

YellowIbis.com 'Engineering One Liners' Men's / Unisex Standard T: Engineer's Glass (Color Choice)

Engineering t-shirt features the classic engineering joke on perception. Durable white and cream flex-print design on a standard tee.

$ 16.99

YellowIbis.com 'Engineering One Liners' Women's Standard T: Engineer's Glass (Color Choice)

Engineering t-shirt features the classic engineering joke on perception. Durable white and yellow-orange flex-print design on a standard tee.

$ 16.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Cool as menthol (Kelly Green)

"Cool as..." menthol. Chemistry t-shirt features the chemical structure of (–)-L-menthol, the active ingredient in peppermint. Durable white flex-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Cool as menthol (Color choice)

"Cool as..." menthol. Chemistry t-shirt features the chemical structure of (–)-L-menthol, the active ingredient in peppermint. Durable white flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Cool as menthol (Sky Blue)

"Cool as..." menthol. Chemistry t-shirt features the chemical structure of (–)-L-menthol, the active ingredient in peppermint. Durable light blue flex-print design on a Bella brand t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Homework (Light Blue)

"i do all my own homework". Retro nerd shirt for those of you who need to make a studious impression. Durable flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Homework (Color choice)

"i do all my own homework". Retro nerd shirt for those of you who need to make a studious impression. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Homework (Color choice)

"i do all my own homework". Retro nerd shirt for those of you who need to make a studious impression. Durable blue flex-print design.

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Heavyweight T: Robot Evolution (Black)

Given enough time, we will surely evolve into robot overlords. Limited-time guest design from Amorphia Apparel in durable white flex-print.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Heavyweight T: Robot Evolution (Natural Beige)

Given enough time, we will surely evolve into robot overlords. Limited-time guest design from Amorphia Apparel in durable navy flex-print.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Heavyweight T: Robot Evolution (Black)

Given enough time, we will surely evolve into robot overlords. Limited-time guest design from Amorphia Apparel in durable white flex-print.

$ 19.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Heavyweight T: Infinity (Natural Beige / Navy)

Navy 'infinity' symbol on a natural beige mathematics t-shirt. Durable flex-print design.

$ 19.99

YellowIbis.com 'Mathematics Symbols' Men's / Unisex Heavyweight T: Infinity (Black / Glow in the Dark)

Glow-in-the-dark 'infinity' symbol on a black mathematics t-shirt. Durable flex-print design.

$ 19.99

YellowIbis.com 'Mathematics Symbols' Women's Heavyweight T: Infinity (Black / Glow in the Dark)

Glow-in-the-dark 'infinity' symbol on a black mathematics t-shirt. Durable flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Heavyweight T: Topology Breakfast (Black)

Exclusive mathematics t-shirt features the topology breakfast equivalence principle. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Longsleeved American Apparel T: Topology Breakfast (Black)

Exclusive mathematics t-shirt features the topology breakfast equivalence principle. Durable cream flex-print design on an American Apparel longsleeved jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 22.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: Topology Breakfast (Black)

Exclusive mathematics t-shirt features the topology breakfast equivalence principle. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: hip to b^2 (Color choice)

"hip to b^2"... corny math pun alert! Durable white flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Slim-Fit T: hip to b^2 (Color choice)

"hip to b^2"... corny math pun alert! Durable blue flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: hip to b^2 (Color choice)

"hip to b^2"... corny math pun alert! Durable blue flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Fullerene C24 (Color Choice)

Unique chemistry t-shirt features the structure of (C24-Oh)[4,6]fullerene, a 24 carbon fullerene cage. Durable red flex-print design. Email for custom color choices!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Fullerene C24 (Color Choice)

Unique chemistry t-shirt features the structure of (C24-Oh)[4,6]fullerene, a 24 carbon fullerene cage. Durable cream flex-print design on a Bella brand tee. Email for custom color choices!

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: Fullerene C24 (Color Choice)

Unique chemistry t-shirt features the structure of (C24-Oh)[4,6]fullerene, a 24 carbon fullerene cage. Durable red flex-print design. Email for custom color choices!

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Grad school highway sign (Royal Blue)

"Grad school: next rest area 5 years". Humorous highway sign t-shirt is the perfect gift for the recent addition to your lab. Durable two colour flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Heavyweight T: Grad school highway sign (Navy Blue)

"Grad school: next rest area 5 years". Humorous highway sign t-shirt is the perfect gift for the recent addition to your lab. Durable two colour flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Grad school highway sign (Navy Blue)

"Grad school: next rest area 5 years". Humorous highway sign t-shirt is the perfect gift for the recent addition to your lab. Durable two colour flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Heavyweight T: Grad student bar code (Color choice)

Is your school or institution making you feel a little too generic? T-shirt features a bar coded 'grad student' design. Durable navy blue flex print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Grad student bar code (Color choice)

Is your school or institution making you feel a little too generic? T-shirt features a bar coded 'grad student' design. Durable white flex print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Small Canvas Tote Bag : Grad student bar code (Black)

Is your school or institution making you feel a little too generic? Conveniently sized 100% cotton canvas tote features a bar coded 'grad student' design. Durable white flex print design.

$ 16.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I think (Color choice)

A variation on Rene Descartes famous statement "I think, therefore I am" (Je pense, donc je suis) from his 1637 treatise "Discours de la méthode pour bien conduire sa raison, et chercher la verité dans les sciences". Durable white and light green flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Women's Heavyweight T: I think (Color choice)

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I think (Color choice)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: 18-crown-6 (Color choice)

Our unique 18-crown-6 design in your choice of t-shirt color. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: 18-crown-6 (Color choice)

Our unique 18-crown-6 design in your choice of t-shirt color. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: 18-crown-6 (Color choice)

Our unique 18-crown-6 design in your choice of t-shirt color. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Varsity Symbols' Men's / Unisex AA Ringer T: Varsity S (White / Red)

Varsity-style "S" emblem stands for Science! Red and navy fuzzy flock design on a classic lightweight American Apparel ringer T. NOTE: AA runs small, check sizing. Email us for custom lettering.

$ 19.99

YellowIbis.com 'Varsity Symbols' Men's / Unisex AA Ringer T: Varsity Science (Blue)

Varsity-style "Science" in black and royal blue flex-print on a classic lightweight American Apparel ringer T. NOTE: AA runs small, check sizing.

$ 19.99

YellowIbis.com 'Varsity Symbols' Women's Slim-Fit Ringer T: Varsity S (White / Red)

Varsity-style "S" emblem stands for Science! Red and navy fuzzy flock design on a classic ringer T. Email us for custom lettering.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Better living through chemistry (Natural Beige)

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Heavyweight T: Better living through chemistry (Navy)

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Better living through chemistry (Royal Blue)

$ 19.99

YellowIbis.com 'Alchemy Symbols' Women's Slim-Fit American Apparel T: Copper Silver Gold (Color choice)

Alchemical t-shirt design features three alchemical symbols for copper, silver, and gold. Special metallic silver flex-print on the t-shirt color of your choice. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Alchemy Symbols' Men's / Unisex American Apparel T: Copper Silver Gold (Color choice)

Alchemical t-shirt design features three alchemical symbols for copper, silver, and gold. Non-metallic gray flex-print on the t-shirt color of your choice. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Alchemy Symbols' Women's Slim-Fit American Apparel T: Copper Silver Gold (Color choice)

Alchemical t-shirt design features three alchemical symbols for copper, silver, and gold. Special metallic gold flex-print on the t-shirt color of your choice. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Biochemistry Alchemy' Women's Heavyweight T: Rosalind Franklin DNA (White)

Biochemistry t-shirt features a stylized montage of Rosalind Franklin and her famous 'Photo 51'. Franklin was a co-discoverer of DNA who was never properly acknowledged. Note: Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Biochemistry Alchemy' Large 2.25" Buttons: Rosalind Franklin DNA

Buttons feature a stylized montage of Rosalind Franklin and her famous 'Photo 51'. Franklin was a co-discoverer of DNA who was never properly acknowledged. 5-pack means you can share!

$ 5.99

YellowIbis.com 'Biochemistry Alchemy' Men's / Unisex Heavyweight T: Rosalind Franklin DNA (White)

$ 19.99

YellowIbis.com 'Biochemistry One Liners' Men's / Unisex Heavyweight T: Snow DNA (Color choice)

Celebrate winter with a snowflake t-shirt in blue and white. Features a fuzzy flock-print snowflake with matching "snow DNA" printed underneath.

$ 19.99

YellowIbis.com 'Biochemistry One Liners' Women's Heavyweight T: Snow DNA (Color choice)

Celebrate winter with a snowflake t-shirt in blue and white. Features a fuzzy flock-print snowflake with matching "snow DNA" printed underneath.

$ 19.99

YellowIbis.com 'Biochemistry One Liners' Men's / Unisex Heavyweight T: Snow DNA (Color choice)

Celebrate winter with a snowflake t-shirt in blue and white. Features a fuzzy blue flock-print snowflake with matching "snow DNA" printed underneath.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Fucitol (Black)

Use this chemistry t-shirt to educate your colleagues on the little-known structure of fucitol. Durable white and yellow flex print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Fucitol (Black)

Use this chemistry t-shirt to educate your colleagues on the little-known structure of fucitol. Durable white and lavender flex print design on a Bella brand T.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Fucitol (Black)

Use this chemistry t-shirt to educate your colleagues on the little-known structure of fucitol. Durable white and light blue flex print design.

$ 19.99

YellowIbis.com 'Medical One Liners' Men's / Unisex Heavyweight T: Ribs (Color choice, Glow in the Dark)

Humorous rib cage t-shirt done in a special glow-in-the-dark print. Durable flex-print design.

$ 19.99

YellowIbis.com 'Medical One Liners' Women's Slim-Fit T: Ribs (Color choice, Glow in the Dark)

Humorous rib cage t-shirt done in a special glow-in-the-dark print. Durable flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Medical One Liners' Women's Heavyweight T: Ribs (Color choice, Glow in the Dark)

Humorous rib cage t-shirt done in a special glow-in-the-dark print. Durable flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit AA Jersey T: Capsaicin Chili (Color choice)

Chemistry t-shirt features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers, together with a hot red chilli. Durable red and green flex-print design. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex AA Jersey T: Capsaicin Chili (Color choice)

$ 19.99

YellowIbis.com 'Chemical Structures' Small Canvas Tote Bag: Capsaicin Chili (Color choice)

Handy tote bag features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers, together with a hot red chilli. Durable red and green flex-print design. Conveniently sized 100% cotton canvas tote.

$ 16.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Cinnamon Hearts (Red)

"Cinnamon Hearts". Chemistry t-shirt features a heart surrounding the structure of trans-cinnamaldehyde, the active ingredient in cinnamon bark. Durable black and white flock-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit AA Longsleeved Hooded T: Cinnamon Hearts (Charcoal)

"Cinnamon Hearts". Comfy hooded chemistry t-shirt features a heart surrounding the structure of trans-cinnamaldehyde, the active ingredient in cinnamon bark. Durable red and white fuzzy flock-print design on an American Apparel hoody.NOTE: AA runs small, check size chart and size up if necessary.

$ 22.99

YellowIbis.com 'Chemical Structures' Women's Slim-Fit T: Cinnamon Hearts (Black)

"Cinnamon Hearts". Chemistry t-shirt features a heart surrounding the structure of trans-cinnamaldehyde, the active ingredient in cinnamon bark. Durable magenta and light pink flock-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Standard T: Gay Evolution (Navy)

Confirm their worst fears about science, evolution and homosexuality with this tongue-in-cheek satire t-shirt. Firestarters only! Durable white and light blue flex-print design on a standard medium-weight tee. Limited time guest design.

$ 18.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Standard T: Gay Evolution (Khaki)

Confirm their worst fears about science, evolution and homosexuality with this tongue-in-cheek satire t-shirt. Firestarters only! Durable white and navy flex-print design on a standard medium-weight tee. Limited time guest design.

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YellowIbis.com 'Evolution One Liners' Women's Standard T: Gay Evolution (Navy)

Confirm their worst fears about science, evolution and homosexuality with this tongue-in-cheek satire t-shirt. Firestarters only! Durable white and red flex-print design on a standard medium-weight tee. Limited time guest design.

$ 18.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Foil hat brigade (Color Choice)

Whether you work with a member of the foil hat brigade, or you've recently joined them, you're sure to impress with this special two color design featuring a metallic silver foil hat. Durable flex-print design in white and metallic silver.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Foil hat brigade (Color Choice)

$ 19.99

YellowIbis.com 'One Liners' Women's Heavyweight T: Foil hat brigade (Color Choice)

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Organic Jersey T: Darwin's Evolutionary Tree (Color Choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable navy flex-print design on a 100% certified organic cotton jersey t-shirt. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color combination.

$ 20.99

YellowIbis.com 'Evolution' Women's Slim-Fit T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable flex-print design on a Bella brand t-shirt. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color combination.

$ 17.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. The ultimate evolutionary biology t-shirt! Durable flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color combination.

$ 17.99

YellowIbis.com 'Computer Symbols' Men's / Unisex Longsleeved Sweatshirt: Power Button (Black / Glow in the Dark)

For those that live and die by the computer, this t-shirt features the almighty power button as a special glow-in-the-dark print. Durable flex-print design on a warm crewneck sweatshirt.

$ 27.99

YellowIbis.com 'Computer Symbols' Women's Slim-Fit T: Power Button (Black / Glow in the Dark)

For those that live and die by the computer, this t-shirt features the almighty power button as a special glow-in-the-dark print. Durable flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Computer Symbols' Men's / Unisex Heavyweight T: Power Button (Black / Glow in the Dark)

For those that live and die by the computer, this t-shirt features the almighty power button as a special glow-in-the-dark print. Durable flex-print design.

$ 19.99

YellowIbis.com 'Physics One Liners' Men's / Unisex Heavyweight T: The physicist's greatest tool (Color Choice)

"The physicist's greatest tool is his wastebasket." Quote by Albert Einstein is featured on this physics t-shirt. Durable two color flex-print design.

$ 19.99

YellowIbis.com 'Physics One Liners' Women's Heavyweight T: The physicist's greatest tool (Color Choice)

"The physicist's greatest tool is his wastebasket." Quote by Albert Einstein is featured on this physics t-shirt. Durable two color flex-print design.

$ 19.99

YellowIbis.com 'Physics One Liners' Men's / Unisex Heavyweight T: The physicist's greatest tool (Color Choice)

"The physicist's greatest tool is his wastebasket." Quote by Albert Einstein is featured on this physics t-shirt. Durable two color flex-print design.

$ 19.99

YellowIbis.com 'Astronomy Symbols' Men's / Unisex Heavyweight T: Star of stars (Black, Glow in the Dark)

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$ 19.99

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Astronomy t-shirt features a star of stars, in a special glow-in-the-dark print. Carry a little piece of the night sky on your t-shirt! Durable glow-in-the-dark flex-print design on a Bella brand T.

$ 19.99

YellowIbis.com 'Astronomy Symbols' Women's Heavyweight T: Star of stars (Black, Glow in the Dark)

Astronomy t-shirt features a star of stars, in a special glow-in-the-dark print. Carry a little piece of the night sky on your t-shirt! Durable glow-in-the-dark flex-print design.

$ 19.99

YellowIbis.com 'Alchemy' Men's / Unisex Heavyweight T: George Washington Carver (White)

George Washington Carver. Photographic portrait by Frances Benjamin Johnston, 1906. Born a slave in Missouri, he rose to prominence as a scientist, botanist, and agricultural researcher. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Alchemy' Men's / Unisex Longsleeved T: George Washington Carver (White)

$ 22.99

YellowIbis.com 'Alchemy' Women's Heavyweight T: George Washington Carver (White)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Ethidium Bromide (Color choice)

Chemistry t-shirt features the structure of ethidium bromide, everyone's favorite fluorescent nucleic acid stain! No biochemist should go without. Durable black flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Melange Jersey T: Ethidium Bromide (Color choice)

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$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Ethidium Bromide (Color choice)

Chemistry t-shirt features the structure of ethidium bromide, everyone's favorite fluorescent nucleic acid stain! No biochemist should go without. Durable white flex-print design.

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Printed-on bandaid will make everyone look twice. Beige and black flex-print design on your choice of t-shirt color.

$ 19.99

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$ 19.99

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$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I'd kill for (Color Choice)

"I'd kill for a Nobel Peace Prize." Quote by comedian Steven Wright. Durable white flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I'd kill for (Color Choice)

"I'd kill for a Nobel Peace Prize." Quote by comedian Steven Wright. Durable navy flex-print design.

$ 19.99

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"I'd kill for a Nobel Peace Prize." Quote by comedian Steven Wright. Durable flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Cool as menthol (Sky Blue Melange)

"Cool as..." menthol. Chemistry t-shirt features the chemical structure of (–)-L-menthol, the active ingredient in peppermint. Durable navy blue flock-print design on a heather jersey T. NOTE: check sizing before ordering. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Cool as menthol (Royal Blue)

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: Cool as menthol (Powder Blue)

"Cool as..." menthol. Chemistry t-shirt features the chemical structure of (–)-L-menthol, the active ingredient in peppermint. Durable blue flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 19.99

YellowIbis.com 'Alchemy' Women's Slim-Fit AA Jersey T: Limbourg Book of Hours (White)

From "Les très riches heures du Duc de Berry", Astrological Woman, c. 1416, painted by the Limbourg brothers for Jean, Duc de Berry. The gorgeous details and colors of the actual print are not fully visible in the thumbnail product images. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt. Printed on an American Apparel brand jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Alchemy' Women's Longsleeved Jersey T: Limbourg Book of Hours (White)

$ 22.99

YellowIbis.com 'Alchemy' Women's Heavyweight T: Limbourg Book of Hours (White)

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Chocolate Theobromine (Chocolate Brown)

Chemistry t-shirt features the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable cream flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heather Jersey T: Chocolate Theobromine (Pink Melange)

Chemistry t-shirt features the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable brown flex-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: Chocolate Theobromine (Color choice)

Chemistry t-shirt features the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable brown flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Re into Research (Black)

"i put the re into research". This science t-shirt is perfect for those times when the first 400 times just isn't good enough. Special two color flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Re into Research (Natural Beige)

"i put the re into research". This science t-shirt is perfect for those times when the first 400 times just isn't good enough. Special two color flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Heavyweight T: Re into Research (Black)

"i put the re into research". This science t-shirt is perfect for those times when the first 400 times just isn't good enough. Special two color flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Feynman diagram 1 (Color choice)

Physics t-shirt features a stylized version of the Feynman diagram for the Higgs-Strahlung process. Durable navy flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Feynman diagram 1 (Color choice)

Physics t-shirt features a stylized version of the Feynman diagram for the Higgs-Strahlung process. Durable gold flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Women's Heavyweight T: Feynman diagram 1 (Color choice)

T-shirt features a stylized version of the Feynman diagram for the Higgs-Strahlung process. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Physics One Liners' Men's / Unisex Heavyweight T: Prediction is very difficult (Color Choice)

"Prediction is very difficult, especially if it's about the future." Quote from Niels Bohr. Durable white and yellow flex-print design.

$ 19.99

YellowIbis.com 'Physics One Liners' Women's Heavyweight T: Prediction is very difficult (Color Choice)

"Prediction is very difficult, especially if it's about the future." Quote from Niels Bohr. Durable royal and navy flex-print design.

$ 19.99

YellowIbis.com 'Physics One Liners' Men's / Unisex Heavyweight T: Prediction is very difficult (Color Choice)

"Prediction is very difficult, especially if it's about the future." Quote from Niels Bohr. Durable royal and black flex-print design.

$ 19.99

YellowIbis.com 'Geology Symbols' Men's / Unisex Heavyweight T: I brake for rocks (Colour choice)

Geology t-shirt features an "I brake for rocks" road warning sign. If you've ever tried to drive somewhere with a geologist, you know how true this is! Durable black and orange flex-print design.

$ 19.99

YellowIbis.com 'Geology Symbols' Women's Heavyweight T: I brake for rocks (Colour choice)

Geology t-shirt features an "I brake for rocks" road warning sign. If you've ever tried to drive somewhere with a geologist, you know how true this is! Durable white and orange flex-print design.

$ 19.99

YellowIbis.com 'Geology Symbols' Men's / Unisex Heavyweight T: I brake for rocks (Colour choice)

Geology t-shirt features an "I brake for rocks" road warning sign. If you've ever tried to drive somewhere with a geologist, you know how true this is! Durable white and orange flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Heisenberg uncertainty principle (Color choice)

Physics t-shirt features the mathematical formulation of the Heisenberg Uncertainty Principle. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Heisenberg uncertainty principle (Color choice)

Physics t-shirt features the mathematical formulation of the Heisenberg Uncertainty Principle. Durable navy flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Women's Heavyweight T: Heisenberg Uncertainty Principle (Color choice)

Physics t-shirt features the mathematical formulation of the Heisenberg Uncertainty Principle. Durable white flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Women's Heavyweight T: MLK Scientific Power (Color Choice)

"Our scientific power has outrun our spiritual power. We have guided missiles and misguided men." Quotation by Dr. Martin Luther King Jr. Durable royal and black flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: MLK Scientific Power (Color Choice)

"Our scientific power has outrun our spiritual power. We have guided missiles and misguided men." Quotation by Dr. Martin Luther King Jr. Durable white and yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: MLK Scientific Power (Color Choice)

"Our scientific power has outrun our spiritual power. We have guided missiles and misguided men." Quotation by Dr. Martin Luther King Jr. Durable black and royal flex-print design.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Element 118 (Color choice)

Celebrate the creation of element 118 (Ununoctium) by the collaboration of the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, and the Lawrence Livermore National Laboratory in the US. Durable cream flex- print on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Physics Symbols' Men's / Unisex Heavyweight T: Element 118 (Light Blue)

$ 19.99

YellowIbis.com 'Physics Symbols' Women's Heavyweight T: Element 118 (Color choice)

Celebrate the creation of element 118 (Ununoctium) by the collaboration of the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, and the Lawrence Livermore National Laboratory in the US. Special metallic silver flex print on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: Fight bad sceince (Black, Customizable text)

"Fight bad sceince". Durable flex-print design with customizable font.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Longsleeved T: Fight bad sceince (Black, Customizable text)

"Fight bad sceince". Durable flex-print design with customizable font.

$ 22.99

YellowIbis.com 'One Liners' Women's Slim-Fit American Apparel T: Fight bad sceince (Black, Customizable text)

"Fight bad sceince". Durable flex-print design with customizable font on an American Apparel Jersey T. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Geology Symbols' Men's / Unisex Heavyweight T: Hammer and Pick (Black / Glow-in-the-Dark)

Geology t-shirt features the "hammer and pick" symbol, the traditional emblem of mining operations, mining guilds and geologists. Special glow-in-the-dark flex-print!

$ 19.99

YellowIbis.com 'Geology Symbols' Men's / Unisex Heavyweight T: Hammer and Pick (Color choice)

Geology t-shirt features the "hammer and pick" symbol, the traditional emblem of mining operations, mining guilds and geologists. Durable neon orange flex-print design.

$ 19.99

YellowIbis.com 'Geology Symbols' Women's Heavyweight T: Hammer and Pick (Black / Glow-in-the-Dark)

Geology t-shirt features the "hammer and pick" symbol, the traditional emblem of mining operations, mining guilds and geologists. Special glow-in-the-dark flex-print!

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Heavyweight T: Musical Evolution (Color Choice)

Biology t-shirt lets you show your love of evolution and your appreciation of band dynamics. Durable black flex-print design.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex Heavyweight T: Musical Evolution (Color Choice)

Biology t-shirt lets you show your love of evolution and your appreciation of band dynamics. Durable yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's / Unisex AA Ringer T: Musical Evolution (White / Black)

Biology t-shirt lets you show your love of evolution and your appreciation of band dynamics. Durable white flock-print design on a lightweight American Apparel ringer T. NOTE: AA runs small, check sizing.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Slim-Fit T: Checkbook empty (Color choice)

"Science: mind full, checkbook empty". The truth of the academic career on a science t-shirt! Special two-color flex-print design in white and non-metallic gray.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Checkbook empty (Color choice)

"Science: mind full, checkbook empty". The truth of the academic career on a science t-shirt! Special two-color flex-print design in black and non-metallic gray.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: Checkbook empty (Color choice)

"Science: mind full, checkbook empty". The truth of the academic career on a science t-shirt! Special two-color flex-print design in white and non-metallic gray.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Moron (Color choice)

Chemistry t-shirt features "Moron", the forgotten element. Atomic weight: zero. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Slim-Fit T: Moron (Color choice)

Chemistry t-shirt features "Moron", the forgotten element. Atomic weight: zero. Durable white flex-print design on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Moron (Color choice)

Chemistry t-shirt features "Moron", the forgotten element. Atomic weight: zero. Durable black flex-print design.

$ 19.99

YellowIbis.com 'Computer Symbols' Men's / Unisex Heavyweight T: Floppy Disk (Color Choice)

A floppy disk - bringin' it back old skool on a retro geek shirt. Durable white flex print.

$ 19.99

YellowIbis.com 'Computer Symbols' Men's / Unisex Heavyweight T: Floppy Disk (Royal Blue)

A floppy disk - bringin' it back old skool on a retro geek shirt. Durable orange-yellow flex print.

$ 19.99

YellowIbis.com 'Computer Symbols' Women's Heavyweight T: Floppy Disk (Color Choice)

A floppy disk - bringin' it back old skool on a retro geek shirt. Durable white flex print.

$ 19.99

YellowIbis.com 'Computer Varsity' Men's / Unisex Heavyweight T: Property of Computer Science (Color Choice)

Varsity-style t-shirt features "Property of Computer Science Dept." with a "1337" leet emblem underneath. Durable white and non-metallic gray design.

$ 19.99

YellowIbis.com 'Computer Varsity' Men's / Unisex Heavyweight T: Property of Computer Science (Color Choice)

Varsity-style t-shirt features "Property of Computer Science Dept." with a "1337" leet emblem underneath. Durable white and non-metallic gray design.

$ 19.99

YellowIbis.com 'Computer Varsity' Women's Heavyweight T: Property of Computer Science (Color Choice)

Varsity-style t-shirt features "Property of Computer Science Dept." with a "1337" leet emblem underneath. Durable white and non-metallic gray design.

$ 19.99

YellowIbis.com 'Mathematics' Men's / Unisex Heavyweight T: Magic Square (Color choice)

Mathematics t-shirt features a magic square, where any dimension adds to 15. Durable white flex-print design on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Mathematics' Men's / Unisex Longsleeved T: Magic Square (Black)

Mathematics t-shirt features a magic square, where any dimension adds to 15. Durable cream flex-print design.

$ 22.99

YellowIbis.com 'Mathematics' Women's Heavyweight T: Magic Square (Color choice)

Mathematics t-shirt features a magic square, where any dimension adds to 15. Durable white flex-print design on your choice of t-shirt color.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: DNA Helix (Bright Green)

Biochemistry t-shirt features an abstract DNA helix design in two colors. Perfect for your favorite biochemist. Durable flex-print.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Heavyweight T: DNA Helix (Navy Blue)

Biochemistry t-shirt features an abstract DNA helix design in two colors. Perfect for your favorite biochemist. Durable flex-print.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: DNA Helix (Royal Blue)

Biochemistry t-shirt features an abstract DNA helix design in two colors. Perfect for your favorite biochemist. Durable flex-print.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: According to... I am very happy (Customizable text, Royal Blue)

A tongue-in-cheek commentary on work environments where we are told how to feel... customizable with your text of choice. Durable flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Heavyweight T: According to... I am very happy (Customizable text, Powder Blue)

A tongue-in-cheek commentary on work environments where we are told how to feel... customizable with your text of choice. Durable flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex Heavyweight T: According to... I am very happy (Customizable text, White)

A tongue-in-cheek commentary on work environments where we are told how to feel... customizable with your text of choice. Durable flex-print design.

$ 19.99

YellowIbis.com 'Chemistry Varsity' Men's / Unisex Heavyweight T: Chemistry Varsity (Color Choice)

Varsity-style "Chemistry" with a benzene symbol and "1865", the year Kekule published his paper on benzene. Email us for customization. Durable white and yellow-orange flex-print design.

$ 19.99

YellowIbis.com 'Chemistry Varsity' Men's / Unisex Heavyweight T: Chemistry Varsity (Color Choice)

Varsity-style "Chemistry" with a benzene symbol and "1865", the year Kekule published his paper on benzene. Email us for customization. Durable white and neon yellow flex-print design.

$ 19.99

YellowIbis.com 'Chemistry Varsity' Women's Heavyweight T: Chemistry Varsity (Color Choice)

Varsity-style "Chemistry" with a benzene symbol and "1865", the year Kekule published his paper on benzene. Email us for customization. Durable white and yellow flex-print design.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex American Apparel T: Your favorite journal (Color Choice)

"Your favorite journal sucks" done retro-style as a science t-shirt. Durable navy flex-print design on an American Apparel T. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Slim-Fit Ringer T: Your favorite journal (Light / Dark Blue)

"Your favorite journal sucks" done retro-style as a science t-shirt. Durable navy flex-print design on a Bella brand T.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex AA Ringer T: Your favorite journal (Light / Dark Blue)

"Your favorite journal sucks" done retro-style as a science t-shirt. Durable navy flex-print design on a lightweight American Apparel ringer T. NOTE: AA runs small, check sizing. necessary.

$ 19.99

YellowIbis.com 'Alchemy Symbols' Men's / Unisex Heavyweight T: Alchemy Sunburst (Royal Blue)

A sunburst pattern made from alchemy symbols. Durable yellow and blue flex-print design.

$ 19.99

YellowIbis.com 'Alchemy Symbols' Women's Longsleeved Jersey T: Alchemy Sunburst (Red)

A sunburst pattern made from alchemy symbols. Durable white and navy flex-print design.

$ 22.99

YellowIbis.com 'Alchemy Symbols' Women's Slim-Fit T: Alchemy Sunburst (Black)

A sunburst pattern made from alchemy symbols. Durable white and red flex-print design.

$ 19.99

YellowIbis.com 'Computer Symbols' Men's / Unisex Heavyweight T: Mac Bomb (Color Choice)

The "mac bomb" symbol as a classic geek t-shirt. Durable black flex-print design.

$ 19.99

YellowIbis.com 'Computer Symbols' Men's / Unisex Heavyweight T: Mac Bomb (Black)

The "mac bomb" symbol as a classic geek t-shirt. Durable red flex-print design.

$ 19.99

YellowIbis.com 'Computer Symbols' Women's Heavyweight T: Mac Bomb (Color Choice)

The "mac bomb" symbol as a classic geek t-shirt. Durable black flex-print design.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Chemistry... (Color Choice)

Chemistry... blowing sh-t up legally. Share your true reason for having become a chemist, with this exclusive chemistry t-shirt. Durable two color flex-print design in white and non-metallic gray.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Chemistry... (Natural Beige)

Chemistry... blowing sh-t up legally. Share your true reason for having become a chemist, with this exclusive chemistry t-shirt. Durable two color flex-print design in black and non-metallic gray.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Slim-Fit T: Chemistry... (Color Choice)

Chemistry... blowing sh-t up legally. Share your true reason for having become a chemist, with this exclusive chemistry t-shirt. Durable two color flex-print design in white and non-metallic gray, on a Bella brand t-shirt.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Heavyweight T: Old School (Black)

Old School Alchemy. Chemistry t-shirt features metallic gold alchemy symbols with 'old school' in cream. Durable two colour flex-print design.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Men's / Unisex Hooded Longsleeved Sweatshirt: Old School (Black)

Old School Alchemy. Chemistry sweatshirt features metallic gold alchemy symbols with 'old school' in cream. Durable two colour flex-print design on a comfy hooded longsleeved sweatshirt.

$ 33.99

YellowIbis.com 'Chemistry One Liners' Women's Heavyweight T: Old School (Black)

Old School Alchemy. Chemistry t-shirt features metallic gold alchemy symbols with 'old school' in cream. Durable two colour flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I'm with... (Customizable text, Brown)

"I'm with..." text is customizable with your message of choice. Durable flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I'm with... (Customizable text, Royal Blue)

"I'm with..." text is customizable with your message of choice. Durable flex-print design.

$ 19.99

YellowIbis.com 'One Liners' Men's / Unisex Heavyweight T: I'm with... (Customizable text, Gray)

"I'm with..." text is customizable with your message of choice. Durable flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Slim-Fit American Apparel T: I'm too pretty not to do math (Color Choice

Math t-shirt turns it around with "I'm too pretty not to do math". Durable light pink flock-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Heather Jersey T: I'm too pretty not to do math (Color Choice)

Math t-shirt turns it around with "I'm too pretty not to do math". Durable yellow-orange flock-print design on a heather jersey T. NOTE: check sizing before ordering.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Heavyweight T: I'm too pretty not to do math (Color Choice

Math t-shirt turns it around with "I'm too pretty not to do math". Durable white flock-print design on your choice of shirt color.

$ 19.99

YellowIbis.com 'Alchemy' Women's Heavyweight T: Weiditz's Alchemist (White)

"An Alchemist", 1520, Hans Weiditz. Synthetic labs apparently have not changed much. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Alchemy' Men's / Unisex Longsleeved T: Weiditz's Alchemist (White)

"An Alchemist", 1520, Hans Weiditz. Synthetic labs apparently have not changed much. Digital direct printing method inks the design directly into the shirt.

$ 22.99

YellowIbis.com 'Alchemy' Men's / Unisex Heavyweight T: Weiditz's Alchemist (White)

"An Alchemist", 1520, Hans Weiditz. Synthetic labs apparently have not changed much. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Heavyweight T: Glycine (Color choice)

Biochemistry t-shirt features the structure of glycine, the simplest of the amino acids. Show some love for this fundamental molecule of biochemistry. Durable white flex-print design.

$ 19.99

YellowIbis.com 'Chemical Structures' Men's / Unisex AA Jersey T: Glycine (Color Choice)

Biochemistry t-shirt features the structure of glycine, the simplest of the amino acids. Show some love for this fundamental molecule of biochemistry. Durable flex-print design on an American Apparel t-shirt. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Chemical Structures' Women's Slim-fit American Apparel T: Glycine (Color Choice)

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: Random Acts of Science (Black)

Mathematics / statistics t-shirt features the quadratic recurrence equation used to generate logistic maps. These maps can exhibit complicated chaotic behaviour and can also be used to generate random numbers. Durable white and yellow flex-print design.

$ 19.99

YellowIbis.com 'Mathematics One Liners' Men's / Unisex Heavyweight T: Random Acts of Science (Natural Beige)

$ 19.99

YellowIbis.com 'Mathematics One Liners' Women's Heavyweight T: Random Acts of Science (Black)

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Darwin Quote (Royal Blue)

Biology t-shirt features this quote from "On the Origin of Species by Means of Natural Selection", Charles Darwin, 1859 (1st ed.). Durable flex-print design.

$ 19.99

YellowIbis.com 'Evolution' Women's Heavyweight T: Darwin Quote (Navy Blue)

Biology t-shirt features this quote from "On the Origin of Species by Means of Natural Selection", Charles Darwin, 1859 (1st ed.). Durable flex-print design.

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Heavyweight T: Darwin Quote (Forest Green)

Biology t-shirt features this quote from "On the Origin of Species by Means of Natural Selection", Charles Darwin, 1859 (1st ed.). Durable flex-print design.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's Standard T: Cycle of Life (Black)

The cycle of life continues... on a funny science t-shirt. Limited-time guest design by Amorphia Apparel in durable flex-print.

$ 19.99

YellowIbis.com 'Evolution One Liners' Women's Standard T: Cycle of Life (Black)

The cycle of life continues... on a funny science t-shirt. Limited-time guest design by Amorphia Apparel in durable flex-print.

$ 19.99

YellowIbis.com 'Evolution One Liners' Men's Standard T: Cycle of Life (Brown)

The cycle of life continues... on a funny science t-shirt. Limited-time guest design by Amorphia Apparel in durable flex-print.

$ 19.99

YellowIbis.com 'Academic One Liners' Women's Slim-fit American Apparel T: Love it or leave it (Color Choice)

"Science, love it or leave it, I did both". For the post-academic. Durable light blue and white flex print on a an American Apparel tee. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Men's / Unisex American Apparel T: Love it or leave it (Color Choice)

"Science, love it or leave it, I did both". For the post-academic. Durable light blue and white flex print on a premium American Apparel tee. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'Academic One Liners' Smaller Canvas Tote Bag: Love it or leave it (Color Choice)

"Science, love it or leave it, I did both". For the post-academic. Durable light blue and white flex print on a 100% cotton canvas tote.

$ 16.99

YellowIbis.com 'Alchemy' Women's Heavyweight T: Rhombicuboctahedron (White)

"Rhombicuboctahedron", Leonardo da Vinci, 1509. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Alchemy' Women's Longsleeved Jersey T: Rhombicuboctahedron (White)

"Rhombicuboctahedron", Leonardo da Vinci, 1509. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 22.99

YellowIbis.com 'Alchemy' Men's / Unisex Heavyweight T: Rhombicuboctahedron (White)

"Rhombicuboctahedron", Leonardo da Vinci, 1509. Colors of printed product may vary slightly from screen display. Digital direct printing method inks the design directly into the shirt.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Standard T: Ear Mouse (Color Choice)

The infamous 'ear mouse'. Often misunderstood as genetic engineering or as having involved human tissue, the Vacanti brothers' experiment used a nude mouse as proof of concept for growing cartiledge on biocompatible scaffoldings. Limited time guest design by Amorphia Apparel. Durable flex print design in pink and white.

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Men's / Unisex Standard T: Ear Mouse (Royal Blue)

$ 19.99

YellowIbis.com 'Biochemistry Symbols' Women's Standard T: Ear Mouse (Color Choice)

$ 19.99

YellowIbis.com Women's Slim-Fit American Apparel T: Blank shirt (Color choice)

American Apparel jersey tees are some of the comfiest around, so here's your chance to add a blank one to your order and pad out your wardrobe. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 16.99

YellowIbis.com Men's / Unisex American Apparel T: Blank shirt (Color choice)

$ 16.99

YellowIbis.com Men's / Unisex American Apparel Fleece Track Jacket: Blank jacket (Color choice)

American Apparel urban fleece track jackets are a comfy, versatile layer for your favorite science tee, so here's your chance to add a blank one to your order at a great price. NOTE: AA runs small / slim, check size chart and size up if necessary.

$ 28.99

YellowIbis.com 'One Liners' Men's / Unisex Organic Jersey T: (Customizable text, Light Blue)

Customize this 100% certified organic cotton jersey t-shirt with your text of choice. Your choice of durable flex or flock print design and colors.

$ 22.99

YellowIbis.com 'One Liners' Women's Perfect-Fit Organic T: (Customizable text, Red)

Customize this 100% certified organic cotton t-shirt with your text of choice. Continental 'perfect-fit' is intermediate between standard and slim-fit, check sizing. Your choice of durable flex or flock print design and colors.

$ 22.99

YellowIbis.com 'One Liners' Women's Plus Size Organic T: (Customizable text, Lime)

Customize this 100% certified organic cotton t-shirt with your text of choice. Your choice of durable flex or flock print design and colors.

$ 22.99

YellowIbis.com 'Biochemistry Symbols' BBQ Apron: Biohazard (Red)

BBQ apron features the classic biohazard symbol in yellow. Durable flex-print design.

$ 17.99

YellowIbis.com 'Biochemistry Symbols' BBQ Apron: Biohazard (Black)

BBQ apron features the classic biohazard symbol in orange. Durable flex-print design.

$ 17.99

YellowIbis.com 'Chemical Structures' BBQ Apron: Ethanol (Red)

BBQ apron features the 3D structure of ethanol with abstract atom colorization. Durable two color flex-print design.

$ 17.99

YellowIbis.com 'Chemical Structures' BBQ Apron: Polyaromatic hydrocarbons (Red)

Show your friends what's really on the BBQ this summer... Chemistry apron features the structure of benzo[a]pyrene, a well-known environmental carcinogen which is part of the PAH class of compounds, and forms in grilled meats as part of the grilling process. Durable flex-print design.

$ 17.99

YellowIbis.com 'Chemical Structures' BBQ Apron: Polyaromatic hydrocarbons (Black)

$ 17.99

YellowIbis.com 'Chemical Structures' BBQ Apron: Benzene (Red)

Chemistry apron features a large red benzene symbol. Entertain your scientist friends at the BBQ while mystifying your neighbors. Durable flex-print design.

$ 17.99

YellowIbis.com 'Logo' Men's / Unisex T: YellowIbis Logo (Black)

Our YellowIbis logo t-shirt, featuring an Egyptian style yellow ibis bird. Durable flex-print design in yellow and metallic gold.

$ 17.99

YellowIbis.com 'Logo' Women's Standard T: YellowIbis Logo (Black)

Our YellowIbis logo t-shirt, featuring an Egyptian style yellow ibis bird. Durable flex-print design in yellow and metallic gold on a standard medium-weight tee.

$ 17.99

YellowIbis.com 'Logo' Eco Cotton Tote Bag: YellowIbis Logo (Black)

Our YellowIbis logo tote bag, featuring an Egyptian style yellow ibis bird. Durable flex-print design in yellow and metallic gold. Large-size tote is made from natural organic cotton.

$ 17.99

YellowIbis.com 'Chemical Structures' Men's Underwear: Testosterone Muscle T (Color Choice)

Men's chemistry muscle tee features a testosterone molecule across the front. Durable navy flex-print design.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's Underwear: Testosterone Muscle T (Color Choice)

Men's chemistry muscle tee features a testosterone molecule across the front. Durable white flex-print design.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's Underwear: Testosterone Muscle T (Heather Grey)

Men's chemistry muscle tee features a testosterone molecule across the front. Durable navy flex-print design.

$ 16.99

YellowIbis.com 'Chemical Structures' Men's Underwear: Testosterone Boxer Shorts (Color Choice)

Comfortable 100% cotton boxer shorts feature a testosterone molecule on the right leg. Durable navy flex-print design. Don't forget to check out the coordinating muscle T's!

$ 17.99

YellowIbis.com 'Chemical Structures' Men's Underwear: Caffeine Boxer Shorts (Color Choice)

Comfortable 100% cotton boxer shorts feature a caffeine molecule on the right leg. Durable cream flex-print design.

$ 17.99

YellowIbis.com 'Chemical Structures' Men's Underwear: Testosterone Boxer Shorts (Color Choice)

Comfortable 100% cotton boxer shorts feature a testosterone molecule on the right leg. Durable gray flex-print design. Don't forget to check out the coordinating muscle T's!

$ 17.99

YellowIbis.com 'Chemical Structures' Women's American Apparel Underwear: Capsaicin Chemise (Red)

Cute fitted chemistry chemise features the chemical structure of capsaicin, the active ingredient in chilis and hot peppers. Fuzzy black flock-print design on a fitted sheer jersey chemise by American Apparel. NOTE: Sizing runs small, check chart. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 24.99

YellowIbis.com 'Chemistry One Liners' Women's American Apparel Underwear: Heart Chromatography Chemise (Black)

A heart elutes on a chromatogram. Fuzzy red flock-print design on a fitted sheer jersey chemistry chemise by American Apparel. NOTE: Sizing runs small, check chart.

$ 24.99

YellowIbis.com 'Chemical Structures' Women's American Apparel Underwear: Estrogen Chemise (Light Pink)

Cute fitted chemistry chemise features a magenta flock-print estrogen (beta-estradiol) molecule across the bottom. Sheer jersey chemise by American Apparel. NOTE: Sizing runs small, check chart.

$ 24.99

YellowIbis.com 'Mathematics Symbols' Women's Underwear: Pi Symbol Camisole (Black)

Cute camisole features a white and magenta flock-print pi symbol. Perfect for Pi Day or any day!

$ 17.99

YellowIbis.com 'Mathematics Symbols' Women's Underwear: Pi Symbol Lounge Pants (Black)

Comfy cotton drawstring pants feature a pi symbol on the left hip. Perfect for Pi Day or any day! Mix and match with our tank tops or t-shirts. Durable white and magenta flock-print design on 100% cotton sweatpants. NOTE: sizes run large, check carefully.

$ 29.99

YellowIbis.com 'Mathematics Symbols' Women's Underwear: Pi Symbol Shorties (Black)

Cute 'shorties' style panties feature a white and magenta flock-print pi symbol. Perfect for Pi Day or any day!

$ 14.99

YellowIbis.com 'One Liners' Women's American Apparel Underwear: Japanese Science Chemise (Red)

Cute fitted chemise says "Science" in Japanese. Durable black and yellow-orange fuzzy flock-print design. Sheer jersey chemise by American Apparel. NOTE: Sizing runs small, check chart.

$ 24.99

YellowIbis.com 'One Liners' Women's Underwear: Japanese Science Camisole (Red)

Cute camisole says "Science" in Japanese. Durable black and yellow-orange fuzzy flock-print design.

$ 17.99

YellowIbis.com 'One Liners' Women's Underwear: Japanese Science Roll-Down Skirt (Black)

This roll-down cotton/spandex skirt by Bella is perfect for lounging and says "Science" in Japanese. Durable red and yellow-orange fuzzy flock-print design.

$ 17.90

YellowIbis.com 'Mathematics Symbols' Women's Underwear: Infinity Symbol Camisole (Red)

Cute camisole features a black flock-print infinity symbol.

$ 17.99

YellowIbis.com 'Mathematics Symbols' Women's American Apparel Underwear: Infinity Symbol Camisole (Red)

Cute camisole features a red flock-print infinity symbol. Sheer jersey chemise by American Apparel. NOTE: Sizing runs small, check chart.

$ 24.99

YellowIbis.com 'Mathematics Symbols' Women's American Apparel Underwear: Infinity Symbol Bikinis (Black)

Bikini-style American Apparel underwear features a red flock-print infinity symbol. NOTE: Check sizing carefully.

$ 12.99

YellowIbis.com 'Chemistry One Liners' Women's Underwear: Heart Chromatography Camisole (Color Choice)

A heart elutes on a chromatogram. Fuzzy aqua flock-print design on a cute camisole.

$ 17.99

YellowIbis.com 'Chemistry One Liners' Women's Underwear: Heart Chromatography Drape-Hem Skirt (Color Choice)

A heart elutes on a chromatogram. Fuzzy aqua and black flock-print chemistry design on a premium drape hem skirt by Jonano. Luxurious feel bamboo rayon / cotton / spandex mix.

$ 45.99

YellowIbis.com 'Chemistry One Liners' Small Canvas Tote Bag: Heart Chromatography (Black)

A heart elutes on a chromatogram. Fuzzy aqua and red flock-print design on a handy tote bag.

$ 17.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Benzene Tank (Color Choice)

Cute spaghetti strap tank top features a white flock-print benzene molecule on the front. Mix and match with our 'shorties' benzene underwear. Durable flock-print design on an Anvil brand tank.

$ 18.99

YellowIbis.com 'Mathematics Symbols' Women's Underwear: Infinity Tank (White)

Cute spaghetti strap tank top features a white flock-print infinity symbol on the front. Mix and match with our 'shorties' infinity symbol underwear. Durable flock-print design.

$ 18.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Glucose Tank (Black)

Cute spaghetti strap tank top features a white flock-print glucose molecule on the front. Mix and match with our 'shorties' glucose underwear. Durable flock-print design.

$ 18.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Benzene Shorties (Sky Blue)

Cute 'shorties' style panties feature a white flock-print benzene molecule on the front. Mix and match with our benzene camisole or t-shirt. Durable flock-print design.

$ 13.99

YellowIbis.com 'Mathematics Symbols' Women's Underwear: Infinity Shorties (Black)

Cute 'shorties' style panties feature a white flock-print infinity symbol on the front. Mix and match with our infinity symbol camisole or t-shirt. Durable flock-print design.

$ 13.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Glucose Shorties (Pink)

Cute 'shorties' style panties feature a black flock-print glucose molecule on the front. Mix and match with our glucose camisole or t-shirt. Durable flock-print design.

$ 13.99

YellowIbis.com 'Chemical Structures' Women's Underwear: Glucose Roll-Down Skirt (Black)

This roll-down cotton/spandex skirt by Bella is perfect for lounging and features a pink flex-print glucose molecule. Mix and match with our other underwear pieces.

$ 17.90

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Roll-Down Skirt (Pink)

This roll-down cotton/spandex skirt by Bella is perfect for lounging and features a black flock-print estrogen (beta-estradiol) molecule. Mix and match with our other underwear pieces.

$ 17.90

YellowIbis.com 'Chemical Structures' Women's Underwear: Estrogen Roll-Down Skirt (Black)

This roll-down cotton/spandex skirt by Bella is perfect for lounging and features a magenta flock-print estrogen (beta-estradiol) molecule. Mix and match with our other underwear pieces.

$ 17.90

YellowIbis.com 'One Liners' Women's Slim-Fit American Apparel T: I'm the doctor (Customizable text, Purple)

"I'm the doctor my mother wanted me to marry". Slim-fit American Apparel women's jersey t-shirt with customizable font and color. Email us for custom t-shirt choices. NOTE: AA runs small, check size chart and size up if necessary.

$ 19.99

YellowIbis.com 'One Liners' Women's Slim-Fit T: I'm the doctor (Customizable text, Azalea Pink)

"I'm the doctor my mother wanted me to marry". Slim-fit Bella brand women's t-shirt with customizable font and color. Email us for custom t-shirt choices.

$ 19.99

YellowIbis.com 'One Liners' Women's T: I'm the doctor (Customizable text, Black)

"I'm the doctor my mother wanted me to marry". Non-slim fit women's t-shirt with customizable font and color. Email us for custom t-shirt choices.

$ 19.99

YellowIbis.com 'Chemistry One Liners' Women's Maternity T: Total Synthesis (Black)

Women's maternity chemistry t-shirt says "total synthesis in progress". Perfect for pregnant chemists. Soft pink fuzzy flock-print on a 100% cotton jersey maternity t-shirt.

$ 22.99

YellowIbis.com 'Varsity Evolution' Women's Maternity T: Team Science (Pink)

Women's maternity science t-shirt says "Team Science" in a varsity-style print. Soft navy fuzzy flock-print on a 100% cotton jersey maternity t-shirt.

$ 22.99

YellowIbis.com 'One Liners' Women's Maternity T: Custom Text (Customizable text, Black)

Women's maternity science t-shirt is customizable with your font, color, and print type of choice. 100% cotton jersey maternity t-shirt.

$ 22.99

YellowIbis.com 'Chemical Structures' Baby One-Piece Bodysuit: H2O Snowman (Sky Blue)

Celebrate the holidays with a happy snowman with water molecules. Durable white, red and black fuzzy flock-print design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Chemical Structures' Kids T: H2O Snowman (Royal Blue)

Celebrate the holidays with a happy snowman with water molecules. Durable white, red and black fuzzy flock-print design on a 100% cotton t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Baby T: H2O Snowman (Powder Blue)

Celebrate the holidays with a happy snowman with water molecules. Durable white, red and black fuzzy flock-print design on a soft cotton baby t-shirt.

$ 16.99

YellowIbis.com 'Mathematical Symbols' Kids T: Cow Pi (Black)

"Cow Pi", pun included. This catchy design is perfect for Pi Day or any day! Durable fuzzy flock-print design in white and sand on a 100% cotton t-shirt.

$ 13.99

YellowIbis.com 'Mathematical Symbols' Baby Bib: Dreamer Pi (Sky Blue)

Dreamer Pi, with clouds floating through a pi symbol. Perfect for Pi Day or any day! Durable white / blue flex-print design on a soft cotton bib.

$ 14.99

YellowIbis.com 'Mathematical Symbols' Baby T: Cow Pi (Black)

"Cow Pi", pun included. This catchy design is perfect for Pi Day or any day! Durable fuzzy flock-print design in white and sand on a soft cotton baby t-shirt.

$ 16.99

YellowIbis.com 'Astronomy' Kids T: Future Astronaut (Red)

"Future Astronaut" t-shirt is perfect for the little kid with big dreams. Durable white and black flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Academic One Liners' Kids T: Bored (Yellow)

"Bored" logo done athletic style. Durable black and royal blue flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Mathematical Symbols' Kids T: Glitter Pi Symbol (Color Choice)

Fun and unusual t-shirt features a purple 'glitz' glitter pi symbol. Perfect for Pi Day or any day! Special glittery flex-print on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Computer One Liners' Kids T: Geek Girl (Black)

Show your geek spirit with a pixellated-style 'geek girl' emblem. Durable neon pink flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Mathematical Symbols' Kids T: Glow in the Dark Pi Symbol (Black)

Amaze them with a glow-in-the-dark pi symbol. Perfect for Pi Day or any day! Special glow-in-the-dark flex print on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Mathematical Symbols' Kids T: Black Sparkle Pi Symbol (Color Choice)

Fun and unusual t-shirt features a black sparkle flex pi symbol. Perfect for Pi Day or any day! Special high sparkle flex-print on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Animal Symbols' Kids T: Sharks (Black)

Kids' t-shirt features an abstract shark design in two colors. Durable white and light blue flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'One Liners' Kids T: Customizable text (Customizable text, White)

Customize our kids' t-shirt with a special saying in your choice of font or color. Durable flex- or flock-print design on a 100% cotton t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Kids T: Benzene (Royal Blue / Glow in the Dark)

Kids' t-shirt features our benzene design in a special glow-in-the-dark print. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Kids T: Fullerene C24 (Black)

Kids t-shirt features the structure of (C24-Oh)[4,6]fullerene, a 24 carbon fullerene cage. Durable neon green flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Animal Symbols' Kids T: Fuzzy Spider (Yellow)

Kids t-shirt features a scary, fuzzy spider. Durable black fuzzy flock-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Physics Symbols' Kids T: Atomic Love (Pink)

Atom with a heart nucleus is perfect for your favorite young scientist. Durable magenta and neon yellow flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Academic One Liners' Kids T: Writable notebook (Color Choice)

This special shirt has a writable flex notebook design and ships with a washable Crayola marker. Just write on the notebook and let dry for 10 min, and you're ready to go! Wipe off with a damp cloth with a little bit of soap and machine wash. Great fun for kids and their friends!

$ 14.99

YellowIbis.com 'Academic One Liners' Kids T: Writable television (Color Choice)

This special shirt has a writable television and ships with a washable Crayola marker. Just write on the television screen and let dry for 10 min, and you're ready to go! Wipe off with a damp cloth with a little bit of soap and machine wash. Great fun for kids and their friends!

$ 14.99

YellowIbis.com 'Academic One Liners' Kids T: Writable sudoku (Color Choice)

This special shirt has a writable sudoku game and ships with a washable Crayola marker. Just write on the game square and let dry for 10 min, and you're ready to go! Wipe off with a damp cloth with a little bit of soap and machine wash. Great fun for kids and their friends!

$ 14.99

YellowIbis.com 'Environmental One Liners' Kids T: Make science not war (Royal Blue)

"Make science not war" in a groovy retro style. Durable neon yellow and neon orange flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Kids T: Theobromine Heart (Pink)

T-shirt features a heart with the structure of theobromine, the main methylxanthine alkaloid present in cacao beans. Perfect for your favorite chocolate lover! Durable neon pink and chocolate brown flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Medical One Liners' Kids T: I'm vaccinated (Black)

"I'm vaccinated" design features a syringe in place of the letter "i". Show your vaccinated status proudly with this t-shirt! Durable white and yellow flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Kids T: Sweet as glucose (White)

Kids' t-shirt features our "Sweet as glucose" design in bright neon pink. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures / Biochemistry' Kids T: DNA (Black)

Kids' t-shirt features our DNA design in bright neon colors. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Kids T: Cool as menthol (Royal Blue)

Kids' t-shirt features our "Cool as menthol" design in bright white. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Medical Symbols' Kids T: Bandaid (Color choice)

Printed-on bandaid will make everyone look twice. Beige and black flex-print design on your choice of t-shirt color. 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Evolution One Liners' Kids T: Dinosaur Love (Yellow)

Evolution-incorrect design features a dinosaur who loves people. Durable two color flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Medical One Liners' Kids T: Ribs (Color choice, Glow in the Dark)

Humorous rib cage t-shirt done in a special glow-in-the-dark print. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Animal Holiday' Kids T: Three Reindeer (Red)

Three fuzzy white reindeer make this holiday tee festive. Durable white fuzzy flock-print on a 100% cotton t-shirt.

$ 13.99

YellowIbis.com 'Astronomy Symbols' Kids T: Star of stars (Black, Glow in the Dark)

A star of stars, in a special glow-in-the-dark print. Carry a little piece of the night sky on your t-shirt! Durable glow-in-the-dark flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'One Liners' Kids T: Science is my future (Customizable text, Red)

Kids' t-shirt features customizable text, including font, color, and print type. Durable flex- or flock- print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Astronomy Symbols' Kids T: Rocket Ship (Black)

A yellow and orange rocket ship blasts off on this special kid's t-shirt. A limited time guest design. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Animal Symbols' Kids T: Whale (Color Choice)

Kids t-shirt features a happy whale design. Durable white flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Animal Symbols' Kids T: Butterfly (Color Choice)

Kids t-shirt features a black and purple butterfly. Durable fuzzy flock print on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Environmental One Liners' Kids T: Peace Love and Science (Orange)

"Peace Love & Science" in a groovy retro style. Durable royal blue and neon yellow print on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Physics Symbols' Kids T: Atomic Science (Black)

Kids t-shirt features five neon green retro-style atoms. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Animal Symbols' Kids T: Ladybug (White)

Kids t-shirt features a cute ladybug. Durable fuzzy flock-print design in black and red on a 100% cotton t-shirt.

$ 13.99

YellowIbis.com 'Astronomy Symbols' Kids T: Comet (Black)

Comet with stars design is perfect for young sky-watchers. Durable flex-print design in neon colors on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Chemical Structures' Kids T: 18-crown-6 Luck (Color Choice)

Show your Irish luck with a unique 18-crown-6 design that looks like a clover. Add a little science to St. Patrick's Day! Durable fuzzy white flock-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Astronomy Symbols' Kids T: Shooting Star (Black)

T-shirt features a shooting star in neon yellow and light blue. Durable flex-print design on a 100% cotton kids science t-shirt.

$ 13.99

YellowIbis.com 'Varsity Evolution' Toddler T: Team Science (Red)

Yellow-orange flex-print "team science" design on a 100% cotton toddler science t-shirt.

$ 15.99

YellowIbis.com 'Astronomy' Toddler T: Galaxy (Black)

Various stars and planets form a galaxy, in a special three color flex print. 100% cotton toddler science t-shirt.

$ 15.99

YellowIbis.com 'Mathematics' Toddler T: Heart Surface (White)

T-shirt features the sextic equation for a heart surface, surrounded by a stylized y = 0 cross section of that surface. Durable red and maroon flex-print design. 100% cotton toddler science t-shirt.

$ 15.99

YellowIbis.com 'Academic One Liners' Organic Toddler T: Necktie (Color Choice)

Funny mock-necktie design on a 100% cotton toddler science t-shirt. Durable white and red flex-print design.

$ 15.99

YellowIbis.com 'Academic One Liners' Kids T: Graduation Class (Color Choice)

Special "Class of" graduation shirt has a customizable year. Durable black and light blue design on a 100% cotton kids t-shirt.

$ 15.99

YellowIbis.com 'Mathematics Symbols' Toddler T: Penrose Triangle (Color Choice)

T-shirt features a design based on the Penrose triangle, an optical illusion. Special three colour flex-print design in orange, neon orange, and yellow, on a 100% cotton toddler science t-shirt.

$ 15.99

YellowIbis.com 'Chemical Structures' Toddler T: Sweet as glucose (Color Choice)

"Sweet as"... glucose. Chemical structure of b-D-glucopyranose is displayed in the chair configuration. Durable neon pink flex-print design on a 100% cotton toddler science t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 15.99

YellowIbis.com 'One Liners' Toddler T: Science is my future (Customizable text, White)

"Science is my future" in your choice of print on an adorable 100% cotton toddler science t-shirt.

$ 15.99

YellowIbis.com 'Physics Symbols' Toddler T: Atomic Love (Black)

An atom with a heart nucleus, in lavender and neon flex-print. 100% cotton toddler science t-shirt.

$ 15.99

YellowIbis.com 'One Liners' Baby One-Piece Bodysuit: Baby barcode (Yellow)

Baby barcode helps keep your baby inventory organized. The bar code actually codes for the letters 'baby'. Durable black and orange flex-print design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'One Liners' Baby One-Piece Bodysuit: iPood (Mint Green)

"iPood" design for the technologically advanced baby unit. Limited time guest design. Durable green flex-print design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Astronomy One Liners' Baby One-Piece Bodysuit: Shooting Star (Blue)

Shooting star design for the future sky watcher. Durable blue and neon yellow design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Mathematics One Liners' Baby One-Piece Bodysuit: Cutie Pi (Blue)

Adorable "Cutie Pi" design is perfect for Pi Day or any day! Durable fuzzy light blue flock-print design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Mathematics One Liners' Baby One-Piece Bodysuit: Cutie Pi (Fuschia)

Adorable "Cutie Pi" design is perfect for Pi Day or any day! Durable fuzzy light pink flock-print design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Mathematics One Liners' Baby One-Piece Bodysuit: Cutie Pi (Yellow)

Adorable "Cutie Pi" design is perfect for Pi Day or any day! Durable fuzzy orange flock-print design on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Varsity Symbols' Toddler Hooded Sweatshirt: Science (Red)

Varsity-style "Science" in white and royal blue flex print, on a soft and warm cotton/poly toddler sweatshirt.

$ 20.99

YellowIbis.com 'One Liners' Toddler Hooded Sweatshirt: Science is my future (Customizable text, Royal Blue)

"Science is my future" in customizable flex-print, on a soft and warm cotton/poly toddler sweatshirt.

$ 20.99

YellowIbis.com 'Chemical Structures'' Toddler Hooded Sweatshirt: Sweet as glucose (Color Choice)

"Sweet as"... glucose. Chemical structure of b-D-glucopyranose is displayed in the chair configuration. Durable neon yellow flex-print design, on a soft and warm cotton/poly toddler sweatshirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 20.99

YellowIbis.com 'One Liners' Baby T: Science is my future (Customizable text, Light Pink)

Adorable baby t-shirt features customizable text, including font, color, and print type. Durable flex- or flock- print design on a soft cotton baby t-shirt.

$ 16.99

YellowIbis.com 'One Liners' Baby T: Science is my future (Customizable text, Black)

Adorable baby t-shirt features customizable text, including font, color, and print type. Durable flex- or flock- print design on a soft cotton baby t-shirt.

$ 16.99

YellowIbis.com 'One Liners' Baby T: Science is my future (Customizable text, Powder Blue)

Adorable baby t-shirt features customizable text, including font, color, and print type. Durable flex- or flock- print design on a soft cotton baby t-shirt.

$ 16.99

YellowIbis.com 'One Liners' Kids T: Math is easy (Black)

"Math is easy" in a special pink 'glitz' glitter print. Durable flex-print design on a 100% kids cotton math t-shirt.

$ 13.99

YellowIbis.com 'One Liners' Baby One-Piece Bodysuit: Boy genius (Customizable text, Red)

The perfect gift for a little boy genius. Customizable text on a soft cotton baby one-piece bodysuit. Your choice of durable flex or flock print design.

$ 18.99

YellowIbis.com 'One Liners' Baby One-Piece Bodysuit: Girl genius (Customizable text, Fushcia)

The perfect gift for a little girl genius. Customizable text on a soft cotton baby one-piece bodysuit. Your choice of durable flex or flock print design.

$ 18.99

YellowIbis.com 'Chemical Structures' Baby T: Sweet as glucose (Light Pink)

Adorable baby t-shirt features our "Sweet as glucose" design with chemical structure. Durable magenta fuzzy flock print design on a soft cotton baby t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 16.99

YellowIbis.com 'Chemical Structures' Longsleeved Baby Sleeper: Sweet as glucose (White)

Adorable baby sleeper features our "Sweet as glucose" design with chemical structure. Durable red fuzzy flock print design on a cozy 100% cotton rib sleeper. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 18.99

YellowIbis.com 'Chemical Structures' Baby T: Sweet as glucose (Powder Blue)

Adorable baby t-shirt features our "Sweet as glucose" design with chemical structure. Durable blue fuzzy flock print design on a soft cotton baby t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 16.99

YellowIbis.com 'Academic One Liners' Baby Bib: Varsity Drooling (Sky Blue)

Show off your baby's varsity achievements with this cute design. Durable white flex-print on a soft cotton bib.

$ 13.99

YellowIbis.com 'Academic One Liners' Baby One-Piece Bodysuit: Varsity Drooling (Red)

Show off your baby's varsity achievements with this cute design. Durable fuzzy yellow-orange flock print on a soft cotton baby one-piece bodysuit.

$ 18.99

YellowIbis.com 'Academic One Liners' Baby Bib: Varsity Drooling (Pink)

Show off your baby's varsity achievements with this cute design. Durable white flex-print on a soft cotton bib.

$ 13.99

YellowIbis.com 'Chemical Structures' Baby Bib: Sweet as glucose (Black)

Adorable baby bib features our "Sweet as glucose" design. Durable flex-print design on a trendy black soft cotton bib.

$ 13.99

YellowIbis.com 'Chemical Structures' Baby Bib: Sweet as glucose (Sky Blue)

Adorable baby bib features our "Sweet as glucose" design. Durable flex-print design on a soft cotton bib.

$ 13.99

YellowIbis.com 'Chemical Structures' Baby Bib: Sweet as glucose (Pink)

Adorable baby bib features our "Sweet as glucose" design. Durable flex-print design on a soft cotton bib.

$ 13.99

YellowIbis.com 'Chemical Structures' Hooded Baby Blanket: Pink Estrogen (Pink / White)

Super-soft hooded baby blanket features an estrogen (beta-estradiol) molecule. Durable magenta fuzzy-flock print design on a 100% cotton blanket by American Apparel. Pink with white trim.

$ 24.99

YellowIbis.com 'Chemical Structures' Hooded Baby Blanket: H2O Snowman (White)

Super-soft hooded baby blanket features a happy snowman with water molecules. Durable aqua, red and black fuzzy flock-print design on a 100% cotton blanket by American Apparel. White with white trim.

$ 24.99

YellowIbis.com 'Chemical Structures' Hooded Baby Blanket: Blue Testosterone (Blue / White)

Super-soft hooded baby blanket features a testosterone (17b-hydroxy-4-androsten-3-one) molecule. Durable white fuzzy-flock print design on a 100% cotton blanket by American Apparel. Blue with white trim.

$ 24.99

YellowIbis.com 'Evolution' Men's / Unisex Plus Size T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. Durable white flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color choice.

$ 19.99

YellowIbis.com 'Evolution' Women's Plus Size T: Darwin's Evolutionary Tree (Color choice)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. Durable white flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color choice.

$ 19.99

YellowIbis.com 'Evolution' Men's / Unisex Plus Size 4XL T: Darwin's Evolutionary Tree (White)

A reproduction of the first sketch of an evolutionary tree by Charles Darwin, 1837. The diagram was drawn in one of his first notebooks on 'transmutation'. Darwin wrote "I think" above the diagram. Durable royal blue flex-print design. YellowIbis is the original maker of this t-shirt design. Email us if you would like a custom color choice.

$ 17.99

YellowIbis.com 'Physics Symbols' Women's Plus Size T: Atomic Love (Color Choice)

Show your love for physics with an atom with a heart nucleus. Durable powder blue and metallic gold flex-print design.

$ 21.99

YellowIbis.com 'Varsity Evolution' Women's Plus Size T: Team Science (Color Choice)

Yellow-orange fuzzy flock-print "team science" design on a comfy plus size t-shirt.

$ 21.99

YellowIbis.com 'Varsity Evolution' Men's / Unisex Plus Size T: Team Science (Color Choice)

Yellow-orange fuzzy flock-print "team science" design on a comfy plus size t-shirt.

$ 21.99

YellowIbis.com 'Symbols One Liners' Men's / Unisex Plus Size T: Dropping science (Royal Blue)

Retro-style "dropping science" next to a cracked Erlenmeyer. Special yellow-orange flex-print design.

$ 21.99

YellowIbis.com 'One Liners' Women's Plus Size T: I blinded me with science (Black)

"I blinded me with science." Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable white flex-print design on a comfy plus size T.

$ 21.99

YellowIbis.com 'One Liners' Men's / Unisex Plus Size T: I blinded me with science (Black)

"I blinded me with science." Thomas Dolby's 80's hit song remixed with that accident down the hall last week. Durable white flex-print design on a comfy plus size T.

$ 21.99

YellowIbis.com 'Biochemistry Symbols' Women's Plus Size Organic T: Skull and Pipets (Black)

Our unique Skull and Pipets symbol, exclusive to YellowIbis.com. For the bad a** bench workers out there! Durable white flex-print design on a 100% certified organic cotton tee.

$ 22.99

YellowIbis.com 'Chemical Structures' Women's Plus Size T: Estrogen (Fuschia)

T-shirt features the chemical structure of estrogen (beta-estradiol). Durable fuzzy black flock-print design on a comfy plus size t-shirt. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 21.99

YellowIbis.com 'Chemical Structures' Men's / Unisex Plus Size T: Testosterone (Black)

T-shirt features the chemical structure of testosterone (17b-hydroxy-4-androsten-3-one). Durable light blue flex-print design. Want your own version? Create your own chemical t-shirt in our shirt designer!

$ 21.99

YellowIbis.com 'Varsity Evolution' Dog / Cat T: Team Science (Customizable text, White/Black)

"Team Science" or your choice of text, font, and color, on a 100% cotton American Apparel ringer pet t-shirt. Check sizing. Durable flex- or flock-print design.

$ 16.99

YellowIbis.com 'Biochemistry Symbols' Dog / Cat T: Biohazard Variant (White/Black)

A stylized take on the biohazard symbol, on a 100% cotton American Apparel ringer pet t-shirt. Check sizing. Durable flex-print design in orange and black.

$ 16.99

YellowIbis.com 'Varsity Evolution' Dog / Cat T: Team Science (Customizable text, Pink)

"Team Science" or your choice of text, font, and color, on a 100% cotton American Apparel ringer pet t-shirt. Check sizing. Durable flex- or flock-print design.

$ 16.99

YellowIbis.com 'Holiday 2008' Plush Reindeer: Benzene (White)

Plush holiday reindeer comes with his own benzene t-shirt and a Santa hat. Holiday 2008 Limited Edition!

$ 17.99

YellowIbis.com 'Holiday 2008' Plush Reindeer: Pi Symbol (White)

Plush holiday reindeer comes with his own pi symbol t-shirt and a Santa hat. Holiday 2008 Limited Edition!

$ 17.99

YellowIbis.com 'Holiday 2008' Plush Reindeer: Snowflake Text (Customizable text, White)

Plush holiday reindeer comes with his own snowflake t-shirt and a Santa hat. Customize the back of the shirt with a name or a short phrase. Holiday 2008 Limited Edition!

$ 17.99

methyl_anthranilate_yellowibis

yellowibis_benzenepirate_vec

grad_cap_classof

vanillin_yellowibis

oseltamivir_yellowibis

Mardi Gras Fleur-de-lis

New Orleans / Mardi Gras Fleur-de-lis

Varsity Drooling

Notebook (use writable flex)

Add your thoughts by placing flex text over top of the design or using writable flex.

Sudoku 1 (use writable flex)

Use writable flex to play Sudoku on your shirt.

Television (use writable flex)

Add your thoughts by placing flex text over top of the design or using writable flex.

Chalkboard (use writable flex)

Add your thoughts by placing flex text over top of the design or using writable flex.

Bored

Athletic-style 'Bored'.

Mission: Venus

Aaaaah! A giant Venus Fly Trap about to swallow up a gently drifting astronaut. Curse those damn NASA bigwigs and their endless greed!

basketball

evolution2

testosterone_yellowibis

capsaicin_v2_yellowibis

menthol_yellowibis

glucose_yellowibis

ethanol2_yellowibis

estrogen_yellowibis

caffeine_yellowibis

benzene2_yellowibis

18crown6_yellowibis

Blue Peace

yellowibis_japansci_vec

yellowibis_syninfractur_vec

yellowibis_synfractur_vec

yellowibis_theobromine_chocbytes_vec

Pixel Hearts

Pi

Greek letter pi.

DNA

DNA symbol standing for Detroit Ninja Academy.

Ear Mouse

A mouse with an ear grown onto it's back, just like them thar' scientists made a few years back.