Aluminum used to be more valuable than gold!
84
One cubic foot of gold weighs more than 1,200 pounds!
78
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The average temperature at 40,000 feet above sea level is -60 F.
56
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Most dust particles in your house are made from dead skin!
67
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65