Date: 2011-12-14 11:21:31

Geography of the United States

Shale gas

Unconventional gas

Barnett Shale

Marcellus Formation

Hydraulic fracturing in the United States

Proppants and fracking fluids

Coalbed methane

Fossil fuel

Natural gas

Hydraulic fracturing

Energy

COMMENT MUSIC In conversation with climate-change composer Paul D. Miller p.279 CULTURE Martin Kemp muses

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