The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
A hard working adult sweats up to 4 gallons per day.
39
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
About 2/3 of American men prefer boxers to briefs.
83
Babies cry but they don't produce tears until one to three months after birth.
238
Two in five people in the world marry their first love.
270
Every workday, 6.7 million people commute to Manhattan!
26