Electric lights for trees were first used in 1895.
62
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Water, electricity, and gas has been free in Turkmenistan since 1991.
11
Pure water (H2O) does not conduct electricity on its own.
46
In Iceland, 100% of domestically produced electricity comes from renewable energy.
8
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