The Japanese, on average, are the shortest people.
320
Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
131
Intelligent people have more zinc and copper in their hair.
233
Two in five people in the world marry their first love.
270
The Japanese commonly put ketchup on their rice.
16
Roughly a quarter of the world's people live in China.
50