The two distinct approaches to environmental policy include direct regulation-sometimes called 'command and control' policies-and regulation by economic, or market-based incentives. This book is the first to compare the costs and outcomes of these approaches by examining realworld applications....

This paper addresses the timing and interdependence between innovation and environmental policy in a model of research and development (R&D). On a first-best path the environmental tax is set at the Pigouvian level, independent of innovation policy. With infinite patent lifetime, the R&D subsidy...