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A Pakistani health worker gives a child a polio vaccine in Lahore, Pakistan, Monday, May 5, 2014. For the first time, the World Health Organization on Monday declared the spread of polio an international public health emergency that could grow in the next few months and unravel the nearly three-decade effort to eradicate the crippling disease. (AP Photo/K.M. Chaudary)
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Gold bars recovered from the wreck of the S.S. Central America off the South Carolina coast are seen in this April 15, 2014 photograph provided by Odyssey Marine Exploration Inc. Odyssey announced on Monday, May 5, 2014, that the bars are among nearly 1,000 ounces of gold that has been initially recovered from the wreck of the ship that sank during a hurricane in 1857. An earlier expedition a quarter-century ago recovered gold bars and coins worth about $50 million at that time. (AP Photo/Courtesy Odyssey Marine Exploration Inc.)
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Five gold bars recovered from the wreck of the S.S. Central America off the South Carolina coast are seen in this April 15, 2014, photograph provided by Odyssey Marine Exploration Inc. Odyssey announced on Monday, May 5, 2014, that the bars are among nearly 1,000 ounces of gold that has been initially recovered from the wreck of the ship that sank during a hurricane in 1857. An earlier expedition a quarter-century ago recovered gold bars and coins worth about $50 million at that time. (AP Photo/Courtesy Odyssey Marine Exploration Inc.)
