It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
People who laugh more are better able to tolerate pain - both physical and emotional.
36
Denmark has twice as many pigs as there are people.
66
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118