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
Males sweat 40% more than females.
104
One in 500 humans has one blue eye and one brown eye.
145
Americans collectively eat one hundred pounds of chocolate every second.
60
You can only remember 4 things at a time.
31
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Men fall in love faster than women do.
32