Geothermal takes a technological step forward

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Geothermal Volcano
FILE - In this Oct. 15, 2010 file photo, Brandon Forseth, left, and Blaine Williams work on drilling a small test well at Newberry National Volcanic Monument near LaPine, Ore. Geothermal energy developers working on the flanks of an ancient Oregon volcano say they have taken an important technological step toward turning geothermal energy from a novelty into a major source of homegrown power that does not contribute to global warming. (AP Photo/The Bulletin, Ryan Brennecke, File)