One cubic foot of gold weighs more than 1,200 pounds!
78
The average temperature at 40,000 feet above sea level is -60 F.
56
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Nearly 50% of the world's scientists are assigned to military projects.
71
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Iron weighs more after it rusts.
16