Geothermal energy -- everyone seems to be talking about these days, even if they don't quite understand it. It's a type of energy that makes use of the natural heat trapped beneath the Earth's surface and, at the moment, it supplies less than 10% of the world's energy. That's expected to change in the future, but until then... did you know?
- Geothermal energy is considered a renewable resource.
- The country of Iceland uses geothermal energy as its main source of energy.
- New Zealand also views geothermal energy as an important energy source.
- For every 328 feet you travel below the surface of the earth, the temperature rises by 5.4 degrees Fahrenheit.
- The entire resource base of geothermal energy in the world is larger than the resource bases of gas, oil, coal and uranium -- combined.
- Over 20 countries utilize geothermal energy in some way.
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