Americans did not commonly use forks until after the Civil War.
82
You can only remember 4 things at a time.
31
Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
13
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 the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28