Environment

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In this photo released by China's Xinhua News Agency, rescuers save a survivor, center, from the overturned passenger ship in the Jianli section of the Yangtze River in central China's Hubei Province Tuesday, June 2, 2015. Rescuers pulled several survivors to safety after hearing cries for help Tuesday from inside a capsized cruise ship that went down overnight in a storm on China's Yangtze River, state broadcaster CCTV said. (Cheng Min/Xinhua via AP)

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Rescue workers stand on the ship that capsized on the Yangtze River in central China's Hubei province Tuesday. (Associated Press)

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George Washington

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Swiss pilot Andre Borschberg waves from the aircraft Solar Impulse 2 before taking off at Nanjing Lukou International Airport in Nanjing in eastern China's Jiangsu province, in this Sunday, May 31, 2015, file photo. The solar plane attempting to fly around the world without a drop of fuel said Monday, June 1, that it is making an unscheduled stop in Nagoya, central Japan, because of bad weather. (Chinatopix via AP, File)

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Sen. Rand Paul, Kentucky Republican, has long been a critic of the Patriot Act's far-reaching surveillance powers and the fight over its reauthorization has helped him carve out a unique space among the 2016 GOP presidential candidates. (Associated Press)

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In this photo taken on Tuesday, May 5, 2015, Guy Lindblom picks unnecessary leaves from mature cannabis plants so they can concentrate more of their energy into the flowering buds where the medicinal chemicals are produced at a greenhouse in Otsego, Minn. The crop is coming in at Minnesota Medical Solutions, one of two manufacturers who will be supplying the state's medical marijuana. (AP Photo,Star Tribune,Glen Stubbe, File)

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FILE - In this Feb. 18, 2015 file photo Environmental Protection Agency (EPA) Administrator Gina McCarthy speaks at the State Department in Washington. The Obama administration says a new federal rule regulating small streams and wetlands will protect the drinking water of more than 117 million Americans. Republicans in Congress say the rule issued this week goes too far and could even subject puddles and ditches to regulation in what GOP lawmakers call a massive overreach of government power. (AP Photo/Susan Walsh, File)

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Nepalese students wait for their school bus in front of a collapsed house as thousands of schools across the districts worst hit by two major earthquakes in Nepal reopened Sunday, in Kathmandu, Nepal, Sunday, May 31, 2015. With most school buildings damaged or unsafe, the Education Ministry ordered that classes be held in temporary classrooms. According to a UNICEF statement, 32,000 classrooms were destroyed and 15,352 classrooms were damaged after the two major earthquakes in Nepal. (AP Photo/Niranjan Shrestha) ** FILE **

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An Anheuser-Busch plant in northwest Georgia has temporarily halted its production of beer in order to supply thousands of cans of drinking water to flood-ravaged Texas and Oklahoma. (Anheuser-Busch)

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FILE - In this Nov. 1, 2014 file photo, an American Ethanol label is shown on a NASCAR race car gas tank at Texas Motor Speedway in Fort Worth, Texas. The Obama administration is proposing to reduce the amount of ethanol blended in the nation's gasoline, a blow to renewable fuel companies that have pushed to keep high volumes of their product flowing into drivers' gas tanks. The move is unlikely to mean much for consumers or prices at the pump. (AP Photo/Randy Holt, File)

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President Obama speaks after receiving a briefing at the National Hurricane Center in Miami on Thursday to draw attention to preparedness in advance of the annual storm season that formally begins June 1. Mr. Obama linked hurricanes to climate change. (Associated Press)

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U.S. Interior Secretary Sally Jewell unveiled updated Bureau of Land Management use policy Thursday, saying federal efforts to protect the greater sage grouse are needed to ensure "a bright future for wildlife and a thriving Western economy." (Associated Press)

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GOP quiz - Presidential Succession

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Several former top Iowa GOP officials said privately that if Wisconsin Gov. Scott Walker walks on the state's Aug. 8 straw poll, it's "dead." (Associated Press)

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Hundreds of protesters gathered outside a "draw Muhammad" contest Friday sponsored by ex-Marine Jon Ritzheimer in Phoenix, but there were no arrests or violence. (12 News)

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President Barack Obama, with Federal Emergency Management Agency (FEMA) Administrator Craig Fugate, participate in a briefing at the National Hurricane Center in Miami, Thursday, May 28, 2015, to draw attention to preparedness in advance of the annual storm season that formally begins June 1. (AP Photo/Pablo Martinez Monsivais)

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Flood waters overrun the banks of the bayou in downtown Houston, Tuesday, May 26, 2015. Floodwaters kept rising Tuesday across much of Texas as storms dumped almost another foot of rain on the Houston area, stranding hundreds of motorists and inundating the famously congested highways that serve the nation’s fourth-largest city. (AP Photo/Pat Sullivan)

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Alaena Tate, a member of a search and rescue team, looks through debris for people who were still missing after heavy flooding Wednesday, May 27, 2015, around Umphery Ranch located between Wimberley and San Marcos, Texas. (Gabe Hernandez/Corpus Christi Caller-Times via AP)

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Defense Secretary Ashton Carter Wednesday challenged Chinese pressure for U.S. warships and surveillance aircraft to halt all operations near disputed islands in the strategic waters that China is claiming as its sovereign maritime domain. (Associated Press)