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...

There has been vast interest in the distribution of city sizes in an economy, but this research has largely neglected that cities also diff er along another fundamental dimension: age. Using novel data on the foundation dates of almost 8,000 American cities, we fi nd that older cities in the US...

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...

Urban renewal areas are popular instruments in spatial planning to prevent urban decline and to induce urban renewal. 22 renewal areas were implemented in Berlin, Germany alone between 1993 and 1995, mainly to increase housing and living quality in the aftermath of the city s long division...

This paper develops a quantitative model of city structure to separate agglomeration forces, dispersion forces and fundamentals as determinants of location choices. The model remains tractable and amenable to empirical analysis because of stochastic shocks to worker productivity, which yield a...