For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Pain occurs when sounds are above 130 db.
124
Only humans shed emotional tears.
331
The world's shortest man measures only 21.5 inches.
73