French economist Jean Tirole won the Nobel prize for economics Monday for research on market power and regulation in industries dominated by a few powerful companies. The undated photo was provided by the Toulouse School of Economics. AP hide caption

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Yoram Bauman jokes about "hyperinflation in hell" and on earth. Case in point: the Zimbabwe hundred-trillion-dollar note. Lejia Lombardi/Courtesy of Inter-American Development Bank hide caption

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French economist and academic Thomas Piketty, in his book-lined office at the French School for Advanced Studies in the Social Sciences, in Paris, earlier this month. Charles Platiau/Reuters/Landov hide caption

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The Royal Swedish Academy of Sciences announces the winners of the 2013 Nobel Memorial Prize in Economic Sciences in Stockholm Monday. The prize went to U.S. professors Eugene Fama, Lars Peter Hansen and Robert Shiller. Claudio Bresciani/AP hide caption

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The line outside an employment office in Madrid last October. Spain's economy has been among the hardest hit in Europe. Dominique Faget /AFP/Getty Images hide caption

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Elinor Ostrom in January 2011. Raveendran /AFP/Getty Images hide caption

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