Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
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
Iron weighs more after it rusts.
68
Nearly 50% of the world's scientists are assigned to military projects.
71
A single speck of dust is half way in size between a subatomic particle and the Earth.
15