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In a Thursday, Aug. 1, 2013 photo, Rob Thomas, left, and Joe Strong join guests in a line dance following their wedding ceremony at the Nicollet County Courthouse in St. Peter, Minn. Their marriage was the first same-sex ceremony to be conducted in Nicollet County, located in south-central Minnesota. Same-sex couples received nearly 1 in 3 marriage licenses issued in Minnesota since they were allowed to wed, The Associated Press found in a statewide survey of the first month's impact of the new gay marriage law. (AP Photo/The Mankato Free Press, John Cross)

Amy Adams, North Carolina campaign coordinator with Appalachian Voices, shows her hand covered with wet coal ash from the Dan River swirling in the background as state and federal environmental officials continued their investigations of a spill of coal ash into the river in Danville, Va., Wednesday, Feb. 5, 2014. Duke Energy estimates that up to 82,000 tons of ash has been released from a break in a 48-inch storm water pipe at the Dan River Power Plant in Eden N.C. on Sunday. (AP Photo/Gerry Broome)

In this photo taken Monday Aug. 5, 2013 Associated Press Newsman Steve Peoples is seen in Wolfeboro, N.H.(AP Photo/Jim Cole)

The west branch of the Susquehanna River flows past Jersey Shore, Pa. on Sunday March 23, 2014. About a third of the borough (population 4,300) is in a flood hazard zone and nearly 470 homes in town are expected to see flood insurance premium hikes because of changes to the National Flood Insurance Program. (AP Photo/Ralph Wilson)

In this June 9, 2014 photo, a petroleum industry worker stands on an oil and gas rig on a well pad, in New Castle, a small farming and ranching settlement on the Western Slope of the Rockies, in Colo. Four in 10 new oil and gas wells near national forests and fragile watersheds or otherwise identified as higher pollution risks escape federal inspection, unchecked by an agency struggling to keep pace with America's drilling boom, according to an Associated Press review that shows wide state-by-state disparities in safety checks. (AP Photo/Brennan Linsley)

In this undated Calehr family hand out photo Samira Calehr, left, poses with her son, Shaka Panduwinata. Shaka Panduwinata and his brother, Miguel Panduwinata, were killed aboard Malaysia Airlines Flight 17, which was shot down over Ukraine. (AP Photo/Calehr family, HO) EDITORIAL USE ONLY

In this July 11, 2014, photo, Cuban students exit Marta Abreu Central University in Santa Clara, Cuba. Beginning as early as October 2009, a project overseen by the U.S. Agency for International Development sent Venezuelan, Costa Rican and Peruvian nationals to Cuba to cultivate a new generation of political activists. Often posing as tourists, the young travelers befriended Cuban students. Fernando Murillo, contracted to turn politically apathetic young Cubans into ìchange agents,î headed to Santa Clara and connected with a cultural group that called itself ìRevolution,î a modest outfit of street artists devoted to electronic music and video. (AP Photo/Franklin Reyes)

In this Aug. 8, 2014 photo, bottles of former Providence Mayor Buddy Cianci's pasta sauce sits on the shelf at a grocery store in Providence, R.I. Below his photograph is printed the line “Benefiting Providence School Children.” In recent years, no money from sales of the sauce has been donated to Cianci's charity scholarship fund. (AP Photo/Michelle R. Smith)

Iraq's Prime Minister Haider al-Abadi speaks during an interview with The Associated Press in Baghdad, Iraq, Wednesday, Sept. 17, 2014. Iraqís new prime minister says foreign ground troops are neither necessary nor wanted in his countryís fight against the Islamic State group. (AP Photo/Hadi Mizban)

In this Oct. 18 , 2014 photo, fishing boat passes near a fired coal power plant on the river in Cirebon. The coal-fired power plant in Cirebon came online two years ago despite years of protests from environmentalists and villagers who say the plant is polluting coastal waters, killing off fish and crabs. (AP Photo/Achmad Ibrahim)