The adult human brain weighs about 3 pounds (1,300-1,400 g).
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One human hair can support 3 ounces.
191
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.
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Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
The average sperm cell swims at 8 inches per hour.
4
Your thumb is about the same size as your nose.
124
All 13 minerals necessary for human life can be found in alcohol beverages.
282
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31