Social norms and intrinsic motivations lead to environmentally friendly behaviour even in the absence of environmental policy. This paper looks at the interactions of social norms and environmental regulation in their impact on individual behaviour. People obtain social rewards for voluntary...

The Benefits of Climate Change Policies provides an overview of the state-of-the-art in assessment of the global benefits of climate change policies. It includes recent analyses and viewpoints from well-known scientists and policy analysts, including John Callaway (UNEP Risoe Centre), Henry...

This paper develops a simple model of a polluting industry and an innovating firm. The polluting industry is faced with regulation and costly abatement. Regulation may be taxes or marketable permits. The innovating firm invests in R&D and develops technologies which reduce the cost of pollution...

We examine an implication of the "Coase Theorem" which has had an important impact both on environmental economics and on public policy in the environmental domain. Under certain conditions, the market equilibrium in a cap-and-trade system will be cost-effective and independent of the initial...