Paul Robin Krugman born February 28, 1953 is an American economist who is the Distinguished Professor of Economics at the Graduate Center of the City University of New York and a columnist for The New York Times.] In 2008, Krugman was the winner of the Nobel Memorial Prize in Economic Sciences for his contributions to New Trade Theory and New Economic Geography.[ The Prize Committee cited Krugman's work explaining the patterns of international trade and the geographic distribution of economic activity, by examining the effects of economies of scale and of consumer preferences for diverse goods and services.[ Krugman was previously a professor of economics at MIT, and, later, at Princeton University. He retired from Princeton in June 2015, and holds the title of professor emeritus there. He also holds the title of Centennial Professor at the London School of Economics. Krugman was President of the Eastern Economic Association in 2010,[ and is among the most influential economists in the world. He is known in academia for his work on international economics (including trade theory and international finance), economic geography, liquidity traps, and currency crises. Robin Elizabeth Wells (born 1959) is an American economist. She is the co-author of several economics texts, mostly with her husband Paul Krugman. Wells received her BA from the University of Chicago and her PhD from the University of California, Berkeley. After obtaining her PhD degree in economics from UC Berkeley, Wells obtained a post-doctoral fellowship at the Massachusetts Institute of Technology. She has taught or done research at the University of Michigan, the University of Southampton, Stanford University, MIT, and Princeton University. (fr Wikipedia)