One in 500 humans has one blue eye and one brown eye.
145
You can only remember 4 things at a time.
31
The world's youngest parents were 8 and 9 and lived in China in 1910.
130
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
The world's tallest man reached 8 feet 11 inches at 21.
202
