In the realm of environmental policy instrument choice, there is great divergence between the recommendations of normative economic theory and positive political reality. Four gaps stand out. First, despite the advantages of market-based policy instruments, they have been used to a minor degree,...

Economists have expended considerable effort to develop economically meaningful definitions of the somewhat elusive concept of “sustainability.” We relate such a definition of sustainability to well known concepts from neoclassical economics, in particular, potential Pareto improvements (in...