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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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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You forget 90% of your dreams.
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It takes approximately 12 hours for food to entirely digest.
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A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
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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 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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Early American humans hunted car-size armadillos and used their shells for houses.
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