Environment

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Democratic presidential candidate Sen. Bernard Sanders is bucking fellow contender Hillary Clinton's narrative that she has crucial South Carolina in the bag. (Associated Press)

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FILE - In this Aug. 14, 2015 file photo, water flows through a series of sediment retention ponds built to reduce heavy metal and chemical contaminants from the Gold King Mine wastewater accident, in the spillway about a quarter mile downstream from the mine outside Silverton, Colo. New Mexico officials said Thursday, Jan. 14, 2016 that they plan to sue the federal government and the owners of two Colorado mines that were the source of a massive spill last year that contaminated rivers in three Western states. An EPA cleanup crew accidentally triggered the spill in August at the inactive Gold King mine near Silverton, Colo.(AP Photo/Brennan Linsley, File)

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The largest intact Basulosaurus isis whale fossil, which is on display at the Wati El Hitan Fossils and Climate Change Museum, on the opening day, in the Fayoum oasis, Egypt, Thursday, Jan. 14, 2016. Egypt has cut the ribbon on the Middle East’s first fossil museum housing the world's largest intact skeleton of a "walking whale" in an attempt to attract much-needed tourists driven off by recent militant attacks. (AP Photo/Thomas Hartwell)

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Indonesian soldiers are deployed to secure New Year celebrations in Jakarta, Indonesia, on Dec. 31. (Associated Press)

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The Pacific Aria cruise ship of P&O Cruises Australia sails past the Sydney Opera House after her naming ceremony and maiden voyage in Sydney, Australia, on Nov. 25, 2015. (Associated Press)

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Who signed the Beatles to EMI Records?

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Beatles Quiz cover

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Watch as a US B-52 bomber conducts a low level flight near Osan, South Korea, in response to recent provocative action by North Korea. The B-52 was joined by Republic of Korea F-15 fighter aircraft and US F-16 fighter aircraft. Video by Senior Airman Daniel Robles.