October 22, 2012
Cynthis Walter, left, with the Westmoreland Marcellus Citizens Group holds her sign with another woman after they left the Pennsylvania state Supreme Courtroom in Pittsburgh where the court was hearing arguments from seven municipalities challenging portions of a new law that regulates natural gas exploration on Wednesday, Oct. 17, 2012.
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There's been plenty of debate over the Marcellus Shale natural gas field, but new research adds a twist that could impact political and environmental battles. Two independent financial firms say the Marcellus isn't just the biggest natural gas field in the country — it's the cheapest place for energy companies to drill.