Roughly a quarter of the world's people live in China.
50
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
Only 2% of the Earth's population are natural redheads.
13
Americans will spend more on cat food this year than baby food.
32
Each year, around 24,000 Americans are bitten by rats!
65
Only about 2% of the world population has green eyes.
36