Intelligent people have more zinc and copper in their hair.
233
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Poor eyesight (myopia) is associated with higher IQ.
232
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
Intelligent men tend to be more sexually faithful.
31