A survey of various candidates shows that there is no defensible moral principle that shows that individuals have an obligation to reduce their greenhouse gas emissions.

Climate change is the most difficult threat facing humanity this century and negotiations to reach international agreement have so far foundered on deep issues of justice. Providing provocative and imaginative answers to key questions of justice, informed by political insight and scientific understanding, this book offers a new way forward.

Esteemed philosopher John Broome avoids the familiar ideological stances on climate change policy and examines the issue through an invigorating new lens. As he considers the moral dimensions of climate change, he reasons clearly through what universal standards of goodness and justice require of us, both as citizens and as governments. His conclusions—some as demanding as they are logical—will challenge and enlighten. Eco-conscious readers may be surprised to hear they have a duty to offset all their carbon emissions, while policy (...) makers will grapple with Broome’s analysis of what if anything is owed to future generations. From the science of greenhouse gases to the intricate logic of cap and trade, Broome reveals how the principles that underlie everyday decision making also provide simple and effective ideas for confronting climate change. Climate Matters is an essential contribution to one of the paramount issues of our time. (shrink)

Do private individuals have a moral obligation to reduce their greenhouse gas emissions? In his rich and timely paper, Christian Baatz answers this question in the affirmative. People who emit over...

Although actions of individuals do contribute to climate change, the question whether or not they, too, are morally obligated to reduce the GHG emissions in their responsibility has not yet been addressed sufficiently. First, I discuss prominent objections to such a duty. I argue that whether individuals ought to reduce their emissions depends on whether or not they exceed their fair share of emission rights. In a next step I discuss several proposals for establishing fair shares and also take practical (...) considerations into account. I conclude that individuals should not always be obliged to reduce their emissions to what is their fair share for they may depend on carbon-intensive structures. Instead, they have a Kantian imperfect duty to reduce their emissions ‘as far as can reasonably be demanded of them’. In addition, they should press governments to introduce proper regulation. At the end, I further specify both duties. (shrink)

Baatz’s excellent discussion moves the debate forward in two ways that I will focus on here: first, by articulating an attractive view based on the notion of what can reasonably be demanded of individuals, and second, by providing a helpful overview of much of the existing literature. In what follows I suggest three ways Baatz and others might further clarify and build on these contributions in future research.

Climate Change and the Moral Agent examines the moral foundations of climate change and makes a case for collective action on climate change by appealing to moralized collective self-interest, collective ability to aid, and an expanded understanding of collective responsibility for harm.

To what extent is any individual morally obligated to live environmentally sustainably? In answering this, I reject views I see as constituting two extremes. On one, it depends entirely on whether there exists a collective agreement; and if no such agreement exists, no one is obligated to reduce her/his consumption or pollution unilaterally. On the other, the lack of a collective agreement is morally irrelevant, and regardless of what others are doing, each person is obligated to limit her/his pollution and (...) consumption to a level that would be sustainable if everyone were to act in this way. I argue that the truth is somewhere between these, but that a very precise specification of the extent of one's responsibility is impossible. Roughly, what can be said is that each individual ought constantly to strive to do more than she/he does currently and to push her/himself into new, uncomfortable territory, though no one is obligated to martyr her/himself for an environmental cause. (shrink)

Obligations to reduce one’s green house gas emissions appear to be difficult to justify prior to large-scale collective action because an individual’s emissions have virtually no impact on the environmental problem. However, I show that individuals’ emissions choices raise the question of whether or not they can be justified as fair use of what remains of a safe global emissions budget. This is true both before and after major mitigation efforts are in place. Nevertheless, it remains difficult to establish an (...) obligation to reduce personal emissions because it appears unlikely that governments will in fact maintain safe emissions budgets. The result, I claim, is that under current conditions we lack outcome, fairness, promotional, virtue or duty based grounds for seeing personal emissions reductions as morally obligatory. (shrink)

Introduction: the foundation of justice -- Practical reason and justifying reasons: on the foundation of morality -- Moral autonomy and the autonomy of morality : toward a theory of normativity after Kant -- Ethics and morality -- The justification of justice: Rawls's political liberalism and Habermas's discourse theory in dialogue -- Political liberty: integrating five conceptions of autonomy -- A critical theory of multicultural toleration -- The rule of reasons: three models of deliberative democracy -- Social justice, justification, and power (...) -- The basic right to justification: toward a constructivist conception of human rights -- Constructions of transnational justice: comparing John Rawls's the law of peoples and Otfried Höffe's democracy in an age of globalisation -- Justice, morality, and power in the global context -- Toward a critical theory of transnational justice. (shrink)

It has sometimes been claimed (usually without evidence) that the harm caused by an individual's participation in a greenhouse-gas-intensive economy is negligible. Using data from several contemporary sources, this paper attempts to estimate the harm done by an average American. This estimate is crude, and further refinements are surely needed. But the upshot is that the average American is responsible, through his/her greenhouse gas emissions, for the suffering and/or deaths of one or two future people.

This paper examines the structure of moral responsibility for outcomes. A central feature of the analysis is a condition that we term the ‘avoidance potential’, which gives precision to the idea that moral responsibility implies a reasonable demand that an agent should have acted otherwise. We show how our theory can allocate moral responsibility to individuals in complex collective action problems, an issue that sometimes goes by the name of ‘the problem of many hands’. We also show how it allocates (...) moral responsibility in the classic Frankfurt example. (shrink)

Christian Baatz argues that individuals have a moral duty to reduce their emissions ‘as far as can be reasonably demanded of them’. In this commentary, I argue that Baatz fails to establish...

...believe that his theory asks too much, demanding total devotion to morality and treating everything worth doing (and perhaps more) as a duty. But, despite their differences, the two sets of...

Many in the discourse on climate engineering agree that if deployment of solar radiation management (SRM) technologies is ever permissible, then it must be accompanied by far-reaching mitigation of greenhouse gas (GHG) emissions. This raises the question of if and how both strategies interact. Although raised in many publications, there are surprisingly few detailed investigations of this important issue. The paper aims at contributing to closing this research gap by (i) reconstructing moral hazard claims to clarify their aim, (ii) offering (...) one spe-cific normative justification for far-reaching mitigation and (iii) investigating in greater detail different mechanisms that could potentially cause a trade-off between mitigation and SRM. I conclude that the empirical evidence questioning the trade-off hypothesis is inconclusive. Moreover, theoretical reflections as well as economic model studies point to a trade-off. In our current epistemic situation these findings must be taken seriously. They caution against researching and developing SRM technologies before measures to avoid or minimise a trade-off are implemented. (shrink)

Christian Baatz claims that individuals have an imperfect duty to reduce emissions as far as can reasonably be demanded of them. His ‘epistemic’ argument roughly runs like this:(P1...

In ‘Climate Change and Individual Duties’, Christian Baatz draws on two important features of Kant's moral philosophy: his principle that ‘ought implies can’, and his distinction between perfect an...

Baatz's fair share allocations of individual Emissions Rights proposal under-appreciates systemic ‘moral corruption’ at the heart of climate change. Imperfect duties as...

While Baatz provides an interesting account of individual climate duties, his account does not give much guidance with regard to particular acts, such as taking a flight. While everyone in the debate agrees that institution-oriented duties are important, the relevant question concerns the relation these have with lifestyle-oriented duties. In this comment, it is argued that the relation between institutions and duties is insufficiently examined and that Baatz therefore cannot deal with the following questions. First, what about the conflict between (...) institution-oriented and lifestyle-oriented duties and what kind of actions do both types include? Second, Baatz includes the criterion ‘no moral weight’ in the answer to what can be reasonable demanded, but what will count as morally weighty? This comment will look at these questions by contrasting Baatz’ account with a more Rawlsian one. (shrink)