Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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The average temperature at 40,000 feet above sea level is -60 F.
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Scientists are working on a portable spray-on-skin that can heal severe wounds in just a few minutes.The spray mainly contains important proteins that can reprogram the injured cells to become stem cells, and back to young uniformed skin cells. So far they were able to accelerate healing process from 12 weeks to 21 days with a similar approach.
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Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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