In this article we introduce an empirical framework to analyze how firm performance is affected by increased globalization. Using this framework we discuss recent work on measuring the impact of various shocks firms face in the global marketplace, such as reductions in trade costs (through...

Large multi-product firms dominate international trade flows. This paper documents new facts about multi-product manufacturing exporters that are not easily reconciled with existing multi-product models. Using novel linked production and export data at the firm-product level, we find that the...

The possibility of a single currency for the Mercosur countries was raised by Argentine President Menem in December 1997 and again at the regional summit this past June. This paper argues that whether Mercosur needs a common currency depends on what kind of integrated regional market its...

How will worldwide changes in population affect pressures for international migration in the future? We contrast the past three decades, during which population pressures contributed to substantial labor flows from neighboring countries into the United States and Europe, with the coming three...

We examine "agglomeration shadows" that emerge around large cities, which discourage some economic activities in nearby areas. Identifying agglomeration shadows is complicated, however, by endogenous city formation and "wave interference" that we show in simulations. We use the locations of...