Theories and Proofs T-Shirt

Someone has to clean up after all those particle physicists.

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Fibonacci T-Shirt $24.00 – $25.00

Navy

From daisy petals to seeds of corn, Fibonacci’s sequence explains numbers found in nature.

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Principles of Flight T-Shirt $24.00 – $25.00

Author and cartoonist Sidney Harris muses that while ostriches can’t fly, they are taking the necessary steps to learn how.

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Glows in the dark

Summer Star Chart T-Shirt $24.00 – $25.00

Navy

Small Medium Large X-Large XX-Large +$1.00 Youth Small 6-8 Youth Medium 10-12 Youth Large 14-16

Printed upside down in glow-in-the-dark ink so the wearer can really use it.

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Risk Management T-Shirt $24.00 – $25.00

One of the most underrated risk management strategies: RUN!

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You Want Proof T-Shirt $24.00 – $25.00

Featured on the cover of Sidney Harris’s You Want Proof book of science cartoons.

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Glows in the dark

Galactic Address T-Shirt $24.00 – $25.00

Black

Use “powers of ten” to zoom in from our local cluster of galaxies to North America.

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Spleen T-Shirt $24.00 – $25.00

White