Half of all Americans over the age of 55 have no teeth.
39
The average housewife walks 10 miles a day around the house doing her chores.
100
More boys than girls are born during the day; more girls are born at night.
120
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
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
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Men fall in love faster than women do.
32