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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)

Natacha Pisarenko focuses on Brazil's Neymar after his pushed in the corner during the group A World Cup soccer match between Cameroon and Brazil at the Estadio Nacional in Brasilia, Brazil, Monday, June 23, 2014. (AP Photo/Bernat Armangue)

A Palestinian man stands in the rubble of a house after it was hit by an Israeli missile strike in Gaza City, Friday, July 18, 2014. Israel intensified its 11-day campaign against Hamas by sending in tanks and troops late Thursday after becoming increasingly exasperated with unrelenting rocket fire from Gaza on its cities, especially following Hamas' rejection of an Egyptian cease-fire plan earlier in the week.(AP Photo/Hatem Moussa)

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)

Sally Buzbee, the newly-named chief of the AP's Washington bureau, works on developing stories after the midterm elections that will change the political landscape in the nation's capital, Wednesday, Nov. 10, 2010, in Washington. (AP Photo/J. Scott Applewhite)

Michael Giarrusso in the Associated Press office on Tuesday, Oct. 29, 2013 in New York. (AP Photo/Peter Morgan)

Los Angeles Angels' Erick Aybar, left, celebrates with Mike Trout after they defeated the Texas Rangers 5-2 in a baseball game, Sunday, June 22, 2014, in Anaheim, Calif. (AP Photo/Mark J. Terrill)