Roughly a quarter of the world's people live in China.
50
Babies crawl an average of 200m a day.
212
According to CNN national security correspondent David Ensore, as of 2002 bin Laden had married four women and fathered roughly 25 or 26 children.
54
Half of all Americans over the age of 55 have no teeth.
39
More redheads are born in Scotland than in any other part of the world.
85
Males sweat 40% more than females.
104
On average, a person will spend about five years eating during his or her lifetime.
90