The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A cubic yard of air weighs about 2 pounds at sea level.
31
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The average home creates more pollution than does the average car.
33
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
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Balsa wood is classified as a hard wood!
41