Yu Youzhen, a Chinese millionaire, works as a street sweeper for the sanitation department to set an example for her children.
11
Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
131
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
Approximately 365 million people in the world have computers while half of the world's 6.5 billion population has never seen or used a telephone.
75
Every human spent about half an hour as a single cell.
144