Intelligent people have more zinc and copper in their hair.
233
You can only remember 4 things at a time.
31
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
In the US, people can be rejected from joining the police force if they are too intelligent.
45
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
Poor eyesight (myopia) is associated with higher IQ.
232