Helpman, Melitz and Rubinstein (2008) derive gravity equations to estimate effects of trade barriers on the intensive and extensive margins of trade. They exploit the frequency of zeros in aggregate bilateral trade data to identify effects on the extensive margin and to obtain controls for firm...

Le professeur Dan Ben-David de l'Université de Tel Aviv présente un examen approfondi des liens entre le commerce, la croissance économique et la disparité des revenus entre les pays. Le professeur L. Alan Winters de l'Université du Sussex décrit les divers moyens par lesquels le commerce...

Professor Dan Ben-David of Tel Aviv University takes an in-depth look at the linkages between trade, economic growth, and income disparity among nations. Professor L. Alan Winters of the University of Sussex discusses the various channels by which trade may affect the income opportunities of...

The study shows that trade could play a positive role in the diffusion of environment-friendly technologies around the world and is backed up by the five case studies on chemical-intensive agriculture, deforestation, global warming, acid rain, and overfishing.