One third of the electricity produced on earth is used to power electric light bulbs!
75
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
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
One cubic foot of gold weighs more than 1,200 pounds!
78
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114