Only 2% of the Earth's population are natural redheads.
13
In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28
Intelligent men tend to be more sexually faithful.
31
Thrity-five percent of the people who use personal ads for dating are already married.
102
Only 10-20% of the population can wiggle their ears and raise one eyebrow.
22
Roughly a quarter of the world's people live in China.
50