President Obama's environmental plan won't be so hard for states that have moved to cut emissions. But for others it will be more difficult. Scott Olson/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

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Bill Pentak of Panda Power Funds (left), Plant Manager John Martin (center) and Construction Manager Rob Risher (right) stand in front of the construction site for the new Panda Liberty gas power plant in Towanda, Penn. The plant, expected to come online in early 2016, was deliberately sited on top of the Marcellus Shale to take advantage of the cheap, abundant gas. Marie Cusick/WITF hide caption

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The abandoned Cherokee Clay and Brick Mine in Lee County, N.C., may become a landfill for coal ash. Dave DeWitt/WUNC hide caption

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The EPA is proposing rules that would govern carbon dioxide gas emissions by U.S. power plants. Here, coal is transported via conveyor belt to the coal-fired Jim Bridger Power Plant outside Point of the Rocks, Wyo., in March. Jim Urquhart/Reuters /Landov hide caption

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The Two-Way

EPA Unveils New Proposal Targeting Greenhouse Gases

The draft proposal from the Environmental Protection Agency has sparked opposition from industry groups who say the changes would be prohibitively expensive.

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Stanford University's trustees says the school will rid itself of any investments it has made in coal-producing companies. A 2013 file photo shows coal being loaded onto a truck at a mine near Decker, Montana. Matthew Brown/AP hide caption

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The Freedom Industries facility sits on the banks of the Elk River last Friday, in Charleston, W.Va., site of a chemical spill that has led to a ban on using tap water in the area. The CDC says pregnant women in affected areas should drink only bottled water. Tom Hindman/Getty Images hide caption

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An air-monitoring station near the TVA Kingston Fossil Plant in Kingston, Tenn. Stations such as this one are used to monitor clean-air compliance of TVA coal-fired plants. Wade Payne/AP hide caption

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State and local leaders break ground at a Louisville, Ky., coal-burning power plant in November 2012. Dylan Lovan/AP hide caption

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