Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The bark of an older redwood tree is fireproof.
65
The sun is 330,330 times larger than the earth.
75
The average temperature at 40,000 feet above sea level is -60 F.
56
Scientists aren't sure what color dinosaurs were.
312
According to studies, men change their minds two to three times more often than women.
72