Homeland security against possible terrorist attacks involves making decisions under true uncertainty. Not only are we ignorant of the form, place, and time of potential terrorist attacks, we are also largely ignorant of the likelihood of these attacks. In this paper, we conceptualize homeland...

Protecting against terrorist attacks requires making decisions in a world in which attack probabilities are largely unknown. The potential for very large losses encourages a conservative perspective, in particular toward decisions that are robust. But robustness, in the sense of assurance...

We study the impact of bankruptcy risk on markets for tradable environmental and natural resource permits. We find that firms that risk bankruptcy demand more permits than if they were financially secure. Consequently, bankruptcy risk in a competitive market for tradable property rights causes...

In contrast with what we perceive is the conventional wisdom about setting emissions taxes under uncertainty, we demonstrate that setting a uniform tax equal to expected marginal damage is not generally efficient under incomplete information about firms’ abatement costs and damages from...

All environmental policies involve administrative costs, the costs of implementing and managing policies that extend beyond abatement costs. We examine theoretically the optimal distribution of these costs between the public and regulated sources of pollution. The distribution of administrative...

We examine the control of air pollution caused by households burning wood for heating and cooking in the developing world. Since the problem is one of controlling emissions from nonpoint sources, regulations are likely to be directed at household choices of wood consumption and combustion...

Most of the theoretical literature on enforcing environmental policies focuses on situations in which pollution sources are noncompliant. However, some recent work suggests that these situations will very often involve suboptimal policy designs. Thus, the circumstances under which it is...

We analyze the cost of enforcing a system of firm specific emissions standards vis a vis a transferable emissions permit system in the context of complete and incomplete information. We also examine the optimality of a transferable emissions permit system when abatement costs and enforcement...