About 2/3 of American men prefer boxers to briefs.
83
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
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18
More than half the population of Kenya is under the age of 15.
71
On average women can hear better than men.
170
Roughly a quarter of the world's people live in China.
50
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11