The earth is approx. 6,588,000,000,000,000,000 tons.
175
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Hot water can freeze faster than cold water.
181
Each day, up to 150 species of life become extinct.
-23
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5