After the Animas River spill, rancher Irving Shaggy is forced to travel a 70-mile round trip to get water for his livestock. "It's going to be a long struggle," he says. Laurel Morales/KJZZ hide caption

itoggle caption Laurel Morales/KJZZ

A coal scraper machine works on a pile of coal at American Electric Power's Mountaineer coal power plant in 2009 in New Haven, W.Va. The state, in which coal mining is a major industry, is one party planning to sue the Environmental Protection Agency regarding new power plant regulations announced Monday. Saul Loeb/AFP/Getty Images hide caption

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The gurney in the the execution chamber at the Oklahoma State Penitentiary in McAlester, Okla. On Monday the Supreme Court voted 5-4 in a case from Oklahoma that the sedative midazolam can be used in executions without violating the prohibition on cruel and unusual punishment. Sue Ogrocki/AP hide caption

itoggle caption Sue Ogrocki/AP

A plume of steam billows from the coal-fired Merrimack Station in Bow, N.H. in January 2015. Jim Cole/AP hide caption

itoggle caption Jim Cole/AP

Crews perform dredging work along the upper Hudson River in Waterford, N.Y. General Electric's cleanup of PCBs discharged into the river decades ago will end this year. Mike Groll/AP hide caption

itoggle caption Mike Groll/AP

Steam from a coal-fired power plant is silhouetted against the sun near St. Marys, Kan. Industry groups say there should be a far more aggressive consideration of costs of regulation than the Obama administration took into account. Charlie Riedel/AP hide caption

itoggle caption Charlie Riedel/AP