Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
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If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
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
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human brain is more active during sleep than during the day.
28
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The human brain has the capacity to store everything that you experience.
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