San Francisco Explosion 
Kills One in PG&E Gas Line Break San Francisco Explosion of a Pacific Gas and Electric Co (PG&E) gas line
San Francisco Explosion kills one.
Pacific Gas and Electric Co (PG&E) gas line has destroyed 53 homes and killed one person.

Still, the industry is growing. Not only does the cleaner-burning resource have a green edge over high-polluting coal, energy companies have figured out how to access uptapped reserves in beds of shale in recent years, and have been doing so at unprecedented rates. Shale gas production in the U.S. rose 71% between 2007 and 2008, according to the Natural Resources Defense Council (NRDC). Meanwhile, environmental groups and residents near these new drilling operations have real concerns that the method being used to extract the gas may generate toxic wastewater and, worse, could cause groundwater pollution in their vicinities.

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