In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
22
Roughly a quarter of the world's people live in China.
50
Intelligent men tend to be more sexually faithful.
31
95% of people feel uncomfortable when the TV volume is an odd number.
392
Women mature much faster than men.
1k
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11