In the 1950s, the World Bank funded the creation of the world's largest man-made dam, the Kariba Dam, which sits on the border of Zimbabwe and Zambia. The construction of such dams can have dire consequences for poor people living near a river, an investigation found. Jekesai Njikizana/AFP/Getty Images hide caption

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A tray of sardines in Costa Mesa, California, in this November 17, 2014 photo. Plummeting sardine populations force a complete ban on sardine fishing off the U.S. West Coast for more than a year. LUCY NICHOLSON/Reuters /Landov hide caption

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Chinese Finance Minister Lou Jiwei (left) speaks during the signing ceremony of the Asian Infrastructure Investment Bank, Oct. 24, in Beijing. Getty Images hide caption

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As China continues its massive economic growth, especially in cities, the government continues to severely limit people's rights. Is that system sustainable? Johannes Eisele/AFP/Getty Images hide caption

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Earlier this year, the European Central Bank, headed by Mario Draghi, launched a bond-buying program to drive down interest rates and boost borrowing. Emmanuel Dunand/AFP/Getty Images hide caption

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Hillary Clinton begins to speak as her husband, former President Bill Clinton, moves to take a seat after introducing her at the Clinton Global Initiative on Sept. 22, 2014, in New York. Mark Lennihan/AP hide caption

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Students at the Pennsylvania College of Technology are learning a technique called "tripping pipe," moving a pipe from a stack into a horizontal position and lowering it down into a well. The students train on a practice drilling rig to learn how to be roustabouts. Jeff Brady/NPR hide caption

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Alumnus Will Lawrence of the Fossil Fuel Divestment Student Network came back to Swarthmore to help the students effectively communicate their protest to the school's administrators. Emily Cohen/NewsWorks hide caption

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Money is pouring into the stock market, but most new investors only have a middle-school education, says Texas A&M University economist Gan Li. Frank Langfitt/NPR hide caption

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