Paul Krugman is professor of economics at Princeton University. He is a leading liberal voice in American policy debate and has been labelled one of the most influential academic thinkers in America. He was awarded the Nobel Prize for economics in 2008 in recognition of his work on international economics. In the late 1970s, Krugman began working on international trade and a new model of monopolistic competition within trade. Krugman later developed and popularized work on new trade theory, which formed the basis for his Nobel Prize. His seminal 1991 paper on New Economic Geography (NEG) in the Journal of Political Economy became one of the most cited economic works in this field. Krugman has worked at various top universities, including MIT, London School of Economics, and Princeton University. In 1982, he spent a year working for the Council of Economic Advisers under the Presidency of Ronald Reagan.