Most people smile when they are frustrated, according to a study.
15
The average person will go on a date at least 100 times before they finally marry.
33
People in parts of Western China put salt in their tea instead of sugar.
16
The world's shortest man measures only 21.5 inches.
73
Only 2% of the Earth's population are natural redheads.
13
Roughly a quarter of the world's people live in China.
50
