Yawns are more contagious among people with closer relationships.
163
Roughly a quarter of the world's people live in China.
50
In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
22
44% of kids watch television before they go to sleep.
106
People in parts of Western China put salt in their tea instead of sugar.
16
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18