What is Geothermal Energy?
{rokbox title=|your description|}http://www.google.com{/rokbox}Geothermal energy draws sustainable power from the natural heat of the earth.
It is the thermal energy contained in the rock and fluid (that fills the fractures and pores within the rock) in the earth’s crust. It is believed that the ultimate source of geothermal energy is radioactive decay occurring deep within the earth. The presence of volcanoes, hot springs, and other thermal phenomena are surface evidence of our planet’s heat resource.
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