A Perfect Moral Storm: Climate Change, Intergenerational Ethics, and the Problem of Moral Corruption

Abstract

The most authoritative scientific report on climate change begins by saying: . . . Natural, technical, and social sciences can provide essential information and evidence needed for decisions on what constitutes “dangerous anthropogenic interference with the climate system.” At the same time, such decisions are value judgments. . . . There are good grounds for this statement. Climate change is a complex problem raising issues across and between a large number of disciplines, including the physical and life sciences, political science, economics, and psychology, to name just a few. But without wishing for a moment to marginalize the contributions of these disciplines, ethics does seem to play a fundamental role. At the most general level, the reason is that we cannot get very far in discussing why climate change is a problem without invoking ethical considerations. If we do not think that our own actions are open to moral assessment, or that various interests (our own, those of our kin and country, those of distant people, future people, animals, and nature) matter, then it is hard to see why climate change (or much else) poses a problem. But once we see this, then we appear to need some account of moral responsibility, morally important interests, and what to do about both. And this puts us squarely in the domain of ethics. At a more practical level, ethical questions are fundamental to the main policy decisions that must be made, such as where to set a global ceiling for greenhouse-gas emissions and how to distribute the emissions allowed by such a ceiling. For example, where the global ceiling is set depends on how the interests of the current generation are weighed against those of future generations, and how emissions are distributed under the global cap depends in part on various beliefs about the appropriate role of energy consumption in people’s lives, the importance of historical responsibility for the problem, and the current needs and future aspirations of particular societies. The relevance of ethics to substantive climate policy thus seems clear. But this is not the topic that I wish to take up here.