Most people smile when they are frustrated, according to a study.
15
Yu Youzhen, a Chinese millionaire, works as a street sweeper for the sanitation department to set an example for her children.
11
The Japanese, on average, are the shortest people.
320
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
51
City dwellers have longer, thicker, denser nose hairs than country folks do.
48
Babies cry but they don't produce tears until one to three months after birth.
238
The Japanese commonly put ketchup on their rice.
16