The world's youngest parents were 8 and 9 and lived in China in 1910.
130
Yawns are more contagious among people with closer relationships.
163
Half of all Americans over the age of 55 have no teeth.
39
Infants spend more time dreaming than adults do.
102
In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
22
Yu Youzhen, a Chinese millionaire, works as a street sweeper for the sanitation department to set an example for her children.
11