Women have a slightly higher average IQ than men.
164
Males sweat 40% more than females.
104
Children's sense of smell is better than adults'.
860
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
The world's youngest parents were 8 and 9 and lived in China in 1910.
130
Senegalese women spend an average of 17.5 hours a week just collecting water.
27