What are the barriers that separate nations? While recent work provides intriguing clues, we have remarkably little concrete evidence as to the nature, size, and shape of barriers. This paper offers direct and indirect evidence on trade barriers, moving us toward a comprehensive geography of...

International trade occurs in physical space and moving goods requires time. This paper examines the importance of time as a trade barrier, estimates the magnitude of time costs, and relates these to patterns of trade and the international organization of production. Estimates indicate that each...

In modern economies services are dominant. As the role of services is increasing, the difference between goods and services is vanishing, but most of our economics and business knowledge is developed from a manufacturing perspective which is no more satisfactory in the new service economy...