The relationship between per capita income and a number of pollution indicators has been found to display an inverted U …-shaped or downward-sloping pattern. Corruption may affect this relationship in two distinct ways: by raising pollution at given …. Using cross section data for several indicators of pollution, the paper estimates the direct and the indirect effect of …

We study the optimal and equilibrium size of cities in a city system model with environmental pollution. Pollution is …, if pollution is local or per capita pollution increases with population, we find that equilibrium cities are too large …. When pollution is global and per capita pollution declines with city size, however, equilibrium cities may be too small …