The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
The world's youngest parents were 8 and 9 and lived in China in 1910.
130
People in parts of Western China put salt in their tea instead of sugar.
16
47% of people have a nightmare at least once a month.
186
On average a woman has 4 sexual partners in her lifetime.
-143
One in 500 humans has one blue eye and one brown eye.
145
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7