Most people smile when they are frustrated, according to a study.
15
Intelligent people have more zinc and copper in their hair.
233
Muhammad is the most common name in the world.
96
City dwellers have longer, thicker, denser nose hairs than country folks do.
48
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18
Approximately one-third of the population can't snap their fingers!
91