The average woman uses her height in lipstick every 5 years.
146
Thrity-five percent of the people who use personal ads for dating are already married.
102
Every three seconds, a new baby is born.
122
Roughly a quarter of the world's people live in China.
50
Men laugh longer, louder, and more often than women.
61
Yawns are more contagious among people with closer relationships.
163
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82