The strongest arguments for the permissibility of geoengineering (also known as climate engineering) rely implicitly on non-ideal theory—roughly, the theory of justice as applied to situations of partial compliance with principles of ideal justice. In an ideally just world, such arguments acknowledge, humanity should not deploy geoengineering; but in our imperfect world, society may need to complement mitigation and adaptation with geoengineering to reduce injustices associated with anthropogenic climate change. We interpret research proponents’ arguments as an application of a particular (...) branch of non-ideal theory known as “clinical theory.” Clinical theory aims to identify politically feasible institutions or policies that would address existing (or impending) injustice without violating certain kinds of moral permissibility constraints. We argue for three implications of clinical theory: First, conditional on falling costs and feasibility, clinical theory provides strong support for some geoengineering techniques that aim to remove carbon dioxide from the atmosphere. Second, if some kinds of carbon dioxide removal technologies are supported by clinical theory, then clinical theory further supports using those technologies to enable “overshoot” scenarios in which developing countries exceed the cumulative emissions caps that would apply in ideal circumstances. Third, because of tensions between political feasibility and moral permissibility, clinical theory provides only weak support for geoengineering techniques that aim to manage incoming solar radiation. (shrink)

Anthropogenic climate change is a global process affecting the lives and well-being of millions of people now and countless number of people in the future. For humans, the consequences may include significant threats to food security globally and regionally, increased risks of from food-borne and water-borne as well as vector-borne diseases, increased displacement of people due migrations, increased risks of violent conflicts, slowed economic growth and poverty eradication, and the creation of new poverty traps. Principles of justice are statements of (...) what persons are owed either by others or by institutions and policies. Climate change gives rise to many concern of justice. This article briefly summarizes some of the most important of these, including claims to have climate change mitigated, claims regarding the sharing of the costs of climate change mitigation, claims for investment into adaptation, and claims to be compensated. (shrink)

In recent years the idea of geoengineering climate has begun to attract increasing attention. Although there was some discussion of manipulating regional climates throughout the l970s and l980s. the discussion was largely dormant. What has reawakened the conversation is the possibility that Earth may be undergoing a greenhouse-induced global wamring, and the paucity of serious measures that have been taken to Prevent it. ln this paper Iassess the ethical acceptability of ICC, based on my impressions of the conversation that is (...) now taking place. Rather than offering a dispassionate analysis, I argue for a point of view. I propose a set of conditions that must be satisfied for an ICC project to be morally permissible and conclude that these conditions are not now satisfied. However, research on ICC should go forward.. (shrink)

Many have argued that that it is morally wrong to benefit from an agent's culpable wronging of a third party. This thought has formed the basis of some arguments that agents can have duties to make up for wrongful acts by others that they could not have stopped, or that occurred before they were born. For example, it has been argued that those who benefited from slavery, colonialism and other shameful events in their nation's history should surrender those benefits, their (...) equivalent value, or provide other forms of redress. Some have also argued that it is morally wrong to benefit from unjust situations caused by third parties even where there is no culpable element. These ideas have potential to be a principle of redress for harms that are caused by the working of very complex systems, such as the global climate system. Geoengineering, the intentional manipulation of the global climate, is a new development in climate science and policy — and one which raises many normative challenges. This article focuses on one specific challenge. The global climate is very complex and there is a real possibility that the best available science will not be able to account for all the consequences of deploying a geoengineering technique. Therefore, any governance regime that allows deployment will have to consider how to organise compensation or redress for any adverse impacts that could not have been predicted at the time of deployment. This article proposes that, with some modification, the principle that agents should surrender benefits that have accrued to them from using geoengineering techniques, can be a good basis for such a scheme. (shrink)