Two American economists share 2018 Nobel Prize in Economics

Photo taken on Oct. 8, 2018 shows a screen displaying the portraits of awarded economists William Nordhaus (L) and Paul Romer of the United States, in Stockholm, Sweden. The 2018 Nobel Prize in Economics, or officially the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, was awarded Monday jointly to William Nordhaus and Paul Romer. (Xinhua)