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
A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
51
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
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Americans did not commonly use forks until after the Civil War.
82
Intelligent people have more zinc and copper in their hair.
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Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
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