Most people smile when they are frustrated, according to a study.
15
All babies are color blind when they are born.
114
On average a woman has 4 sexual partners in her lifetime.
-143
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
The higher the income, the more likely an American man will cheat on his wife.
94
Roughly a quarter of the world's people live in China.
50
Only about 2% of the world population has green eyes.
36
The single biggest predictor of love is proximity.
30