More than half the population of Kenya is under the age of 15.
71
Most people smile when they are frustrated, according to a study.
15
Only 2% of the Earth's population are natural redheads.
13
According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
170
As many as one third Americans flush the toilet while they are still on it.
157
On average, men's noses are 10% larger than women's.
12