It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Muhammad is the most common name in the world.
96
Intelligent men tend to be more sexually faithful.
31
In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
You will experience the billionth second of your life when you are 31 years old.
21