Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
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Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
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Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
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Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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