Intelligent people have more zinc and copper in their hair.
233
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
Dolphins have names for one another.
18
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
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