There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
On average a woman has 4 sexual partners in her lifetime.
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The Japanese, on average, are the shortest people.
320
The world's shortest man measures only 21.5 inches.
73
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
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
Only about 2% of the world population has green eyes.
36
The world's tallest man reached 8 feet 11 inches at 21.
202