A cubic yard of air weighs about 2 pounds at sea level.
31
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
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
Iron weighs more after it rusts.
16
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