Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Diamonds can be shattered with a hammer.
-104
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
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