ABSTRACT
To the general public Paul Krugman is mainly known as a liberal New York Times columnist. To professional economists he is known for developing the new trade theory, which analyzes the determinants of international trade when production and trade take place among oligopolistic firms, and the new economic geography, which studies where firms locate nationally and worldwide. His early work in international macroeconomics explains why currency crises arise; his more recent work explains how to end macroeconomic slumps.
