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
Yawns are more contagious among people with closer relationships.
163
We share 70% of our DNA with a slug.
218
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
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
All 13 minerals necessary for human life can be found in alcohol beverages.
282
A person can live without food for about a month, but only about a week without water.
156