Only 2% of the Earth's population are natural redheads.
13
One in 500 humans has one blue eye and one brown eye.
145
Yawns are more contagious among people with closer relationships.
163
According to a study, women ages 22 to 30 with no children and no spouse earned a higher median income than comparable men in 39 of the 50 largest U.S. cities in 2008.
9
The name "Wendy" was made up for the book Peter Pan!
142
Half of all Americans over the age of 55 have no teeth.
39
40% of people who are rejected in romantic love slip into clinical depression.
72