Shallow Fracking Wells May Threaten Aquifers @StanfordEnergy http://www.scientificamerican.com/article/shallow-fracking-wells-may-threaten-aquifers/ …
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Shallow Fracking Wells May Threaten Aquifers @StanfordEnergy http://www.scientificamerican.com/article/shallow-fracking-wells-may-threaten-aquifers/ …