We study environmental pollution in an economic geography framework with two cities, where pollution arises from commuting within cities, goods transport between cities, production of manufacturing and agricultural goods, and residential energy use. We find that city size has an ambiguous effect...

This paper aims to study the effect of a major historical event on the Spanish city size distribution, the Spanish Reconquista. This was a long military campaign that aimed to expel Muslims from the Iberian Peninsula. The process started in the early 1300s and ended around 1500, when the entire...

This paper uses a new dataset on Internet flows between cities around the world to study whether electronic communication and face-to-face contacts are substitutes or complements. In order to test these competing hypotheses I estimate a regression of bilateral Internet traffic on physical...