The world's shortest man measures only 21.5 inches.
73
A hard working adult sweats up to 4 gallons per day.
39
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
Only about 2% of the world population has green eyes.
36
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18
You can only remember 4 things at a time.
31
About 3000 years ago, most Egyptians died by the time they were 30!
18