To the Editor Drs Wilke and Freeman provided a helpful discussion of air and water contamination related to fracking.1 However, they omitted key parts of the fracking story.
First, methane leaks from fracked wells, sometimes in high quantities, likely accounting in part for recent observed increases in atmospheric methane.2 Atmospheric methane contributes both to ozone formation and to climate change, belying claims that natural gas is an environmentally friendly energy source.
Frumkin H, Patz J. Fracking and Climate Change. JAMA. 2018;319(14):1508. doi:10.1001/jama.2018.0191
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