Shale gas

Advances in technology are putting vast shale gas reserves within reach of developers. The Marcellus Shale Formation may have enough gas to meet the entire nation’s energy needs for at least 14 years, according to experts at Pennsylvania State University.

SOURCES: Energy Information Administration, New York State Geological Survey, Penn State University. GRAPHIC: By Mary Kate Cannistra/The Washington Post. Published on March 28, 2011, 12:16 a.m.

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National

Shale gas

Advances in technology are putting vast shale gas reserves within reach of developers. The Marcellus Shale Formation may have enough gas to meet the entire nation’s energy needs for at least 14 years, according to experts at Pennsylvania State University.