Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Nearly 50% of the world's scientists are assigned to military projects.
71
For every gallon of sea water, you get more than a quarter pound of salt.
45
According to studies, men change their minds two to three times more often than women.
72
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15