A cubic yard of air weighs about 2 pounds at sea level.
31
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
The bark of an older redwood tree is fireproof.
65
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
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
The only letter not appearing on the Periodic Table is the letter "J".
180
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57