Intelligent people have more zinc and copper in their hair.
233
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
You can only remember 4 things at a time.
31
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8