Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
Nylon is made from coal and petroleum.
42
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116