Salt Lake City, Utah [The Salt Lake Tribune] They don’t require the damming of free-flowing rivers. They don’t emit greenhouse gases that contribute to global warming. They don’t produce nuclear waste, create the potential for a disastrous accident or pose a terrorist threat. Geothermal power plants, by tapping the underground heat of the Earth and converting it to electricity, provide one of the cleanest, safest sources of renewable energy. And Utah is a prime location for geothermal energy development. We’re sitting on a gold mine, folks, a gold mine of hot water, steam, magma and super-heated bedrock.