This title was first published in 2003. Economists have had increasing success in arguing the merits of market-based approaches to environmental problems. By making polluting expensive, market-based approaches provide polluters with incentives to clean up, rather than mandates to stop polluting. These approaches include pollution taxes, transferable emissions permits and subsidies for pollution abatement. The purpose of this volume is to explore the situations where Command and Control (CAC) may not be all bad, and in fact might even have some advantages over market-based instruments (MBI).