Every human spent about half an hour as a single cell.
144
Senegalese women spend an average of 17.5 hours a week just collecting water.
27
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Babies cry but they don't produce tears until one to three months after birth.
238
Intelligent people have more zinc and copper in their hair.
233