Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
There's an isolated tribe in Zimbabwe where the people have only two toes, dubbed the 'ostrich people'.
10
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
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
The higher the income, the more likely an American man will cheat on his wife.
94