Most of the world's people must walk at least 3 hours to fetch water!
38
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
8
In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28
Only 2% of the Earth's population are natural redheads.
13
