Sound travels fifteen times faster through steel than through air.
134
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
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The only letter not appearing on the Periodic Table is the letter "J".
180
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Pumice is the only rock that floats on water.
14