One in 500 humans has one blue eye and one brown eye.
145
Women have a slightly higher average IQ than men.
164
During an average lifetime, a man will spend 3,350 hours removing 8.4 meters of stubble.
52
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13
Yawns are more contagious among people with closer relationships.
163
Roughly a quarter of the world's people live in China.
50