Yu Youzhen, a Chinese millionaire, works as a street sweeper for the sanitation department to set an example for her children.
11
Most people turn their music down in the car when finding a street sign to "see better".
34
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Males sweat 40% more than females.
104
During an average lifetime, a man will spend 3,350 hours removing 8.4 meters of stubble.
52
Yawns are more contagious among people with closer relationships.
163