Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
All 13 minerals necessary for human life can be found in alcohol beverages.
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A person will create enough saliva to fill two average size swimming pools during his lifetime.
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In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
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We share 70% of our DNA with a slug.
218
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Our eyes are always the same size from birth, but our nose and ears never stop growing.
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