Residents of Mutriku, a fishing village on Spain's northern coast, lounge at their local beach, protected from fierce Atlantic waves by a cement breakwater that also houses Europe's first wave energy plant. Lauren Frayer for NPR hide caption

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Austin Mitchell walks away from an oil derrick outside Williston, N.D., in July 2011. North Dakota is now the No. 2 producer of oil in the U.S. behind Texas. Gregory Bull/AP hide caption

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As U.S. coal consumption has fallen, its exports of coal have risen. Pictured, Midwest Generation's Crawford Generating Station, a coal-fired power plant in Chicago. The city's two coal-fired plants are closing under a deal with city officials and environmental groups. M. Spencer Green/AP hide caption

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An oil drilling rig is seen near Ray, N.D., last September. The well is being drilled into the Bakken Formation, one of the largest contiguous deposits of oil and natural gas in the United States. Karen Bleier/AFP/Getty Images hide caption

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