One in 500 humans has one blue eye and one brown eye.
145
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
Most people smile when they are frustrated, according to a study.
15
95% of people feel uncomfortable when the TV volume is an odd number.
392
You will experience the billionth second of your life when you are 31 years old.
21
The world's youngest parents were 8 and 9 and lived in China in 1910.
130