In the US, people can be rejected from joining the police force if they are too intelligent.
45
Dolphins have names for one another.
18
Intelligent men tend to be more sexually faithful.
31
Intelligent people have more zinc and copper in their hair.
233
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Poor eyesight (myopia) is associated with higher IQ.
232
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155