Roughly a quarter of the world's people live in China.
50
According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
170
According to some estimates, Americans are sitting on $30 billion worth of unredeemed gift cards.
223
Babies crawl an average of 200m a day.
212
During an average lifetime, a man will spend 3,350 hours removing 8.4 meters of stubble.
52
Two in five people in the world marry their first love.
270
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
More than half the population of Kenya is under the age of 15.
71