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
According to studies, men change their minds two to three times more often than women.
72
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
If the chemical sodium is dropped into water it will immediately and violently explode.
67
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
A cesium atom in an atomic clock beats over nine billion times a second.
43
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20