Dolphins have names for one another.
18
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Intelligent men tend to be more sexually faithful.
31
Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
9
In 1996, research found that having excessive body hair is linked to higher intelligence.
23