In the US, people can be rejected from joining the police force if they are too intelligent.
45
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Poor eyesight (myopia) is associated with higher IQ.
232
Intelligent men tend to be more sexually faithful.
31
Intelligent people have more zinc and copper in their hair.
233
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
You can only remember 4 things at a time.
31