The higher the income, the more likely an American man will cheat on his wife.
94
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Two in five people in the world marry their first love.
270
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
Identical twins do not have identical fingerprints.
79