Yawns are more contagious among people with closer relationships.
163
The “cheerleader effect”, the theory that girls look more attractive in groups, is scientifically proven.
8
Yu Youzhen, a Chinese millionaire, works as a street sweeper for the sanitation department to set an example for her children.
11
Children's sense of smell is better than adults'.
860
The average single man is one inch shorter than the average married man.
88



