Photos: 2012 Nobel Prize winners

U.S. economist Lloyd Shapley smiles outside his home in Los Angeles after being notified that he won the 2012 Nobel Memorial Prize for Economics on Monday, October 15. He and Alvin Roth share the award for their work in market design and matching theory.

U.S. economist Lloyd Shapley smiles outside his home in Los Angeles after being notified that he won the 2012 Nobel Memorial Prize for Economics on Monday, October 15. He and Alvin Roth share the award for their work in market design and matching theory.