there is no perfectly clean technology that eventually solves the pollution problem once and for all. New technologies have … stings attached, i.e. each emits a specific stock pollutant. Damages are convex in individual pollution stocks but additive … across stocks, creating gains from diversification. The research and pollution policies are tightly linked in such a setting …

the new technology may turn out to generate a new pollution problem. R&D may therefore be optimally undertaken more than … the optimal pollution and R&D policies. The optimal R&D program is strictly sequential and has an endogenous stopping …

This paper studies Krugman's (1991) core-periphery model and extends it to include environmental pollution. We present … local environmental pollution, a third and more realistic type of equilibrium may occur in which most of the manufacturing …

We study how the shadow economy affects pollution and how this effect depends on corruption levels in public … be accompanied by higher pollution levels. Our theoretical model predicts that controlling the levels of corruption can … limit the effect of the shadow economy on pollution. We use panel data covering the period from 1999–2005 from more than 100 …

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 …