Senegalese women spend an average of 17.5 hours a week just collecting water.
27
Only 2% of the Earth's population are natural redheads.
13
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
The average American eats at McDonalds more than 1,800 times in their life.
52
There are about 255 babies born worldwide every minute.
46
Children's sense of smell is better than adults'.
860
The world's youngest parents were 8 and 9 and lived in China in 1910.
130
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63