Intelligent men tend to be more sexually faithful.
31
Roughly a quarter of the world's people live in China.
50
Yawns are more contagious among people with closer relationships.
163
Every workday, 6.7 million people commute to Manhattan!
26
People who have a strong friendship possess the ability to communicate with one another through facial expressions.
46
In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28
Half of all Americans over the age of 55 have no teeth.
39