Water, electricity, and gas has been free in Turkmenistan since 1991.
11
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.
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On October 28, 2013, wind power provided 100% of Denmark's power. At 2:00am, it was producing 122% of the country's energy needs.
12
Pure water (H2O) does not conduct electricity on its own.
46
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Electric lights for trees were first used in 1895.
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