During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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One ragweed plant can release as many as one billion grains of pollen!
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A cesium atom in an atomic clock beats over nine billion times a second.
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One barrel of petroleum holds 42 gallons.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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