Noun
energy derived from the heat in the interior of the earth
Source: WordNetWhether fuel cell system development in central Oregon, wind power generation along the Columbia Gorge, or geothermal energy in southern Oregon, investing in new energy sources makes America more energy independent while creating good paying, environmentally friendly jobs. Greg Walden
Connection between life and radioactive nuclei is straightforward. No life without tectonic activity, without volcanic activity. And we know very well that geothermal energy is mostly produced by decay of uranium, thorium, and potassium. Garik Israelian