We use state-level data to estimate the demand for cigarettes and the determinants of smoking prevalence in the United States. The main contribution lies in considering spillovers from geographic smoking restrictions. Results show that price affects cigarette demand, but not smoking prevalence....

We study optimal pollution abatement under a mixed oligopoly game when firms engage in emissions-reducing R&D that is imperfectly appropriable. The regulator uses a tax to curb emissions. Results show that in a mixed oligopoly, the public firm has positive emissions reduction in equilibrium;...