It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The average person walks the equivalent of twice around the world in a lifetime
69
Roughly a quarter of the world's people live in China.
50
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
According to Harris Interactive, 70% of men and 57% of women shower daily.
75
The world's shortest man measures only 21.5 inches.
73
In Haiti, only 1 out of every 200 people own a car.
23