Environment

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Live Action founder and president Lila Rose was one of the speakers at a daylong conference Friday where 2,000 young pro-life supporters were urged to stay visible, stay active and stay hopeful in their efforts to end abortion in America. (Image courtesy of Students for Life of America)

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FILE - In this Oct. 13, 2013 file photo, a little blue heron catches a crayfish in the Shark Valley section of Everglades National Park, Fla. Nesting declines for some species of wading birds shows the long-term damage suffered by Florida's Everglades, and targets set for higher numbers of nests may become unattainable if conditions in the unique wetlands do not improve soon, according to an annual report on nesting wading birds released, Thursday, Jan. 22, 2015 by the South Florida Water Management District. The report states that nesting by little blue herons, tricolored herons and snowy egrets declined significantly in 2014. (AP Photo/Wilfredo Lee, File)

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Jack Requa, Metro's interim general manager, addresses reporters after the transit agency's Jan. 22 safety board meeting in D.C. (Andrea Noble/The Washington Times)

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YouTube, Verizon and American Apparel were named Wednesday on the "dirty dozen" list of the National Center on Sexual Exploitation.

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Former US Vice President Al Gore, left, and US singer Pharrell Williams, right, attend the panel "What's Next? A Climate for Action", during the World Economic Forum in Davos, Switzerland, Wednesday, Jan. 21, 2015. The meeting runs Jan. 21 through 24 under the overarching theme "The New Global Context". (AP Photo/Michel Euler)

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Cheryl Strayed's book "Wild: From Lost to Found on the Pacific Crest Trail" led to her being a guest at the State of the Union and as high-profile environmental advocate. (Associated Press photographs)

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A demonstrator holds a sign that reads "I am Nisman" in Spanish during a protest sparked by the death of special prosecutor Alberto Nisman in Buenos Aires, Argentina. (Associated Press)

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An "American Sniper" billboard on Wilshire Boulevard and Bundy Drive in Los Angeles was defaced with the word "Murder!" in red paint on Sunday. (My Fox Philly)

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This image provided by the Great Basin National Park shows a Winchester Model 1873 rifle found in Nevada. The gun made in 1882 was found propped against a juniper tree in Great Basin National Park in November during an archaeological survey. Park spokeswoman Nichole Andler says officials may never know how long the rifle had been standing there, but it’s possible it had been left there in the 1880s. (AP Photo/National Park Service)

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Marine Infantry Officer Course students await a CH-53E Super Stallion helicopter fast rope drill on the Marine Corps Air Station Yuma, Ariz., Auxiliary Landing Field 2, Wednesday, August 18, 2014. (U.S. Marine Corps) FILE **

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Residents protest what high electricity prices in Ekangala, located near the South African capital of Pretoria. South Africans are unhappy about electricity cuts that have plagued the country since early December, and the rolling blackouts could spell trouble for the ruling African National Congress at the ballot box. (Associated Press)