Until recently, nearly everyone loved natural gas, said Tom Zeller Jr. in The New York Times. Environmentalists viewed it as a “clean burning” alternative to dirty fossil fuels like coal and oil. And after a century’s worth of reserves were found locked in the vast Marcellus Shale formation stretching from Tennessee to New York, Congress and the White House embraced natural gas as a “crucial component of America’s energy future.” But shale gas’s “clean-and-green reputation” is in trouble. A new Cornell University study has concluded that natural gas has a larger “carbon footprint” than either coal or oil, because gas wells and pipes leak vast amounts of planet-warming methane into the atmosphere. There are also growing concerns about the “fracking” process used to create new wells, says David Biello in ScientificAmerican​.com. The mixture of water and toxic chemicals injected underground in the fracking process can contaminate groundwater; some homeowners’ water taps “literally spout flames.”
Shale-gas production does need to clean up its act, said Bryan Walsh in Time.com. But natural gas is far less polluting than coal, which releases mercury, sulfur, and particles when burned. An estimated 13,200 Americans died as a result of air pollution from coal plants in 2010, and 10 percent of those deaths occurred in Pennsylvania—“the heart of shale-gas land.” So while Cornell’s gas-damning findings are troubling, coal is still “the No. 1 environmental enemy.” No, it’s not, said Steven Hayward in The Weekly Standard. Cheap and plentiful natural gas is now the green movement’s main foe for the simple reason that it makes “expensive wind and solar power even less cost competitive.” That’s why environmentalists are desperately trying to derail the shale-gas industry with wildly exaggerated complaints about contaminated drinking water.
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