Babies crawl an average of 200m a day.
212
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
Most people smile when they are frustrated, according to a study.
15
Children's sense of smell is better than adults'.
860
Nearly 10% of American households dress their pets in Halloween costumes.
36
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18
The average single man is one inch shorter than the average married man.
88