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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U.N. chemical weapons experts carry samples collected on Aug. 28 from a site of an alleged chemical weapons attack near the Syrian capital Damascus. The Organization for the Prohibition of Chemical Weapons, which is dismantling Syria's chemical weapons stockpile, was awarded the 2013 Nobel Peace Prize on Friday. Reuters /Landov hide caption

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From left: Randy Schekman, Thomas Suedhof and James Rothman shared the 2013 Nobel Prize in Physiology or Medicine. Reuters /Landov hide caption

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A Swiss cardiologist plots a cheeky graph that shows a country's chocolate consumption may predict its chances of winning a Nobel. John Loo/ hide caption

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NIST physicist and Nobel Prize-winner David Wineland adjusts an ultraviolet laser beam used to manipulate ions in a high-vacuum apparatus containing an "ion trap." These devices have been used to demonstrate the basic operations required for a quantum computer. Copyright Geoffrey Wheeler/National Institute of Standards and Technology hide caption

itoggle caption Copyright Geoffrey Wheeler/National Institute of Standards and Technology

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

itoggle caption Raveendran /AFP/Getty Images

Left to right: Nobel Peace Prize laureates President Ellen Johnson Sirleaf of Liberia, Liberian "peace warrior" Leymah Gbowee and Tawakkul Karman of Yemen.

AP hide caption

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Remnants of Tycho's Supernova, seen in an X-ray/infrared composite image. The supernova was observed by Tycho Brahe and other skywatchers in 1572.

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