|  eothermal energy, generated by converting the hot water or steam from 
        deep beneath the Earth's surface into electricity, emits very little air 
        pollution at a low price. Right now, geothermal plants in the U.S. provide 
        electricity for 3.5 million homes. And geothermal reserves that have already 
        been found could supply our entire country with electricity for 30 years, 
        with no new technological advances.
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