Children's sense of smell is better than adults'.
860
One in 500 humans has one blue eye and one brown eye.
145
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
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
Babies crawl an average of 200m a day.
212