Most people smile when they are frustrated, according to a study.
15
Senegalese women spend an average of 17.5 hours a week just collecting water.
27
Up to the age of six or seven months a child can breathe and swallow at the same time. An adult cannot do this.
165
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Two in five people in the world marry their first love.
270
Over 98 percent of Japanese people are cremated after they die.
54
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76