Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The only letter not appearing on the Periodic Table is the letter "J".
180
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
Billions of neutrinos pass unnoticed through your body every second.
6
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
4.5 pounds of sunlight strike the Earth each day.
27