Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
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Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
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All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
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When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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