In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The bark of an older redwood tree is fireproof.
65
A cesium atom in an atomic clock beats over nine billion times a second.
43
4.5 pounds of sunlight strike the Earth each day.
27
Most dust particles in your house are made from dead skin!
67
One ragweed plant can release as many as one billion grains of pollen!
51
If the chemical sodium is dropped into water it will immediately and violently explode.
67