Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Every human spent about half an hour as a single cell.
144
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The average person's skin weighs twice as much as their brain.
131
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