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 average person's skin weighs twice as much as their brain.
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You can't tickle yourself.
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A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
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By weight, Bone is five times stronger than steel.
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There are about 255 babies born worldwide every minute.
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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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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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