Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
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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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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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The human eye blinks an average of 4,200,000 times a year.
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On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
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Research has determined that most people are happiest at 7:26pm on a Saturday night.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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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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