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Geothermals and Bio-energy (Looking at Energy)
Geothermals and Bioenergy - Looking at Energy Author:Fiona Reynoldson "Geothermals and Bioenergy" looks at producing power from the natural heat of rocks, creating energy from plants, bacteria and household waste, harnessing the energy of volcanoes and geysers, re-placing trees cut down for firewood and using energy without damage to the environment.