Fracking: Will the economy have the last word over the environment?
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Save the environment or sell nature for a profit? That's the dilemma facing a number of communities across the United States. Now that fracking is a legal method of extracting oil deep in the ground, the US has become the world's largest producer of natural gas. But some towns are doing everything they can to keep fracking out of their backyards - and oil companies and lobbyists are fighting back.
Programme prepared by Patrick Lovett and Elise Duffau