The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
4.5 pounds of sunlight strike the Earth each day.
27
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Nylon is made from coal and petroleum.
42