0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Electric lights for trees were first used in 1895.
62
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118
Pure water (H2O) does not conduct electricity on its own.
46
Water, electricity, and gas has been free in Turkmenistan since 1991.
11