One in 500 humans has one blue eye and one brown eye.
145
Thrity-five percent of the people who use personal ads for dating are already married.
102
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
Yawns are more contagious among people with closer relationships.
163
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
The world's shortest man measures only 21.5 inches.
73