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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Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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The human body contains over a billion miles of DNA.
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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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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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We share 70% of our DNA with a slug.
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The human sigh acts as a physiological reset button.
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