Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
9
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
Men laugh longer, louder, and more often than women.
61
There's an isolated tribe in Zimbabwe where the people have only two toes, dubbed the 'ostrich people'.
10
The average person walks the equivalent of twice around the world in a lifetime
69
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
Women who read romance novels have sex twice as often as those who don't.
101