In evaluating environmental policy, researchers have tended to focus on the industry or market that is targeted by regulation and to disregard policy impacts in other parts of the economy. Recent research indicates, however, that in economies where governments rely on distortionary taxes,...

'Until not much more than 20 years ago, economists frequently lamented the fact that they were limited in their empirical analyses to statistical assessments of market behavior, because controlled economic experiments were (thought to be) infeasible, unethical, or both. Much has changed in the...