Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Scientists aren't sure what color dinosaurs were.
312
Iron weighs more after it rusts.
68
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
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