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
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Dolphins have names for one another.
18