Yawns are more contagious among people with closer relationships.
163
In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
22
Women rate men more attractive if other women are looking and smiling at him.
17
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
Most of the world's people must walk at least 3 hours to fetch water!
38
Intelligent men tend to be more sexually faithful.
31
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7