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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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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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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Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
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Mushrooms are more closely related to humans than they are to plants.
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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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A person will create enough saliva to fill two average size swimming pools during his lifetime.
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