There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
You can only remember 4 things at a time.
31
Poor eyesight (myopia) is associated with higher IQ.
232
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
Intelligent people have more zinc and copper in their hair.
233
In the US, people can be rejected from joining the police force if they are too intelligent.
45