One in 500 humans has one blue eye and one brown eye.
145
Two in five people in the world marry their first love.
270
The average American eats at McDonalds more than 1,800 times in their life.
52
There's an isolated tribe in Zimbabwe where the people have only two toes, dubbed the 'ostrich people'.
10
Women have a slightly higher average IQ than men.
164
If you're over 100 years old, there's an 80% chance you're a woman.
143
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18