In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Dolphins have names for one another.
18
Intelligent people have more zinc and copper in their hair.
233
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
In the US, people can be rejected from joining the police force if they are too intelligent.
45
You can only remember 4 things at a time.
31