The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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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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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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After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
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There are about 255 babies born worldwide every minute.
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Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
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