Is drastic action against global warming essential to avoid impoverishing our descendants? Or does it mean robbing the poor to give to the rich? We do not yet know. Yet most of us can agree on the importance of minimising expected deprivation. Because of the vast number of future generations, if there is any significant risk of catastrophe, this implies drastic and expensive carbon abatement unless we discount the future. I argue that we should not discount. Instead, the rich countries (...) should stump up the funds to support abatement both for themselves and the poor states of the world. Yet to ask the present generation to assume all the costs of drastic mitigation.is unfair.Worse still, it is politically unrealistic.We can square the circle by shifting part of the burden to our descendants. Even if we divert investment from other parts of the economy or increase public debt, future people should be richer, so long as we avert catastrophe. If so, it is fair for them to assume much of the cost of abatement.What we must not do is to expose them to the threat of disaster by not doing enough. (shrink)

Climate scepticism in the sense of climate denialism or contrarianism is not a new phenomenon, but it has recently been very much in the media spotlight. When, in November 2009, emails by climate scientists were published on the internet without their authors' consent, a debate began in which climate sceptic bloggers used an extended network of metaphors to contest science. This article follows the so-called 'climategate' debate on the web and shows how a paradoxical mixture of religious metaphors and demands (...) for 'better science' allowed those disagreeing with the theory of anthropogenic climate change to undermine the authority of science and call for political inaction with regard to climate change. (shrink)

Climate change presents us with a problem of intergenerational justice. While any costs associated with climate change mitigation measures will have to be borne by the world’s present generation, the main beneficiaries of mitigation measures will be future generations. This raises the question to what extent present generations have a responsibility to shoulder these costs. One influential approach for addressing this question is to appeal to neo-classical economic cost–benefit analyses and so-called economy-climate “integrated assessment models” to determine what course of (...) action a principle of intergenerational welfare maximization would require of us. I critically examine a range of problems for this approach. First, integrated assessment models face a problem of underdetermination and induction: They are very sensitive to a number of highly conjectural assumptions about economic responses to a temperature and climate regime, for which we have no empirical evidence. Second, they involve several simplifying assumptions which cannot be justified empirically. And third, some of the assumptions underlying the construction of economic models are intrinsically normative assumptions that reflect value judgments of the modeler. I conclude that, while integrated assessment models may play a useful role as “toy models,” their use as tools for policy optimization is highly problematic. (shrink)

Climate change is an ethical issue, because it involves the distribution of a scarce resource – the capacity of the atmosphere to absorb our waste gases without producing consequences that no one wants. Various principles might be used to decide what distribution is just. This commentary argues that on any plausible principle, the industrialised nations should be doing much more than they are doing now, and much more than they are required to do by the Kyoto protocol, to reduce their (...) greenhouse gas emissions. The commentary also responds specifically to some issues raised by MacCracken, Toman and Gardiner, including feasibility, the discount rate, and grounds for pessimism. (shrink)

Between the fourth and the recent fifth IPCC report, science as well as policy making have made great advances in dealing with uncertainties in global climate models. However, the uncertainties public decision making has to deal with go well beyond what is currently addressed by policy makers and climatologists alike. It is shown in this paper that within an anthropocentric framework, a whole hierarchy of models from various scientific disciplines is needed for political decisions as regards climate change. Via what (...) is sometimes referred to as ‘uncertainty cascade’ in the technical literature, the uncertainties of various models accumulate in the input to political decision making. This paper aims to chart the uncertainties in the multi-disciplinary enterprise of current climate modeling in broad strokes. It is shown that the uncertainty cascade makes it impossible to quantify uncertainties in the form of probability estimates. Moreover the paper highlights how global climate models fail to provide probability estimates. A better treatment of the uncertainties of climate predictions on the political level would require an overhaul of the current IPCC practice that separates the various scientific fields in various working groups. (shrink)

In this paper we analyse scientists' perspectives on the release of genetically modified crops into the environment, and the relationship between their perspectives and the context that they work within, e.g. their place of employment, funding of their research and their disciplinary background. We employed Q-methodology to examine these issues. Two distinct factors were identified by interviewing 62 scientists. These two factors included 92 per cent of the sample. Scientists in factor 1 had a moderately negative attitude to GM crops (...) and emphasised the uncertainty and ignorance involved, while scientists in factor 2 had a positive attitude to GM crops and emphasised that GM crops are useful and do not represent any unique risks compared to conventional crops. Funding had a significant effect on the perspective held by the scientists in this study. No ecologists were associated with factor 2, while all the scientists employed in the GM-industry were associated with this factor. The strong effects of training and funding might justify certain institutional changes concerning how we organise science and how we make public decisions when new technologies are to be evaluated. Policy makers should encourage more interdisciplinary training and research and they should make sure that representatives of different disciplines are involved in public decisions on new technologies. (shrink)

Economics has played an important role in assessing climate change impacts, and the effects of various individual and policy response strategies. Proponents of a key role for economics in analysis of climate change policies and goals argue that its capacity to incorporate and compare a variety of costs and benefits makes it uniquely useful for normative assessment. Critics of economic analysis of climate change have questioned not only its empirical capacities, but also its fundamental usefulness given some of the important (...) but often implicit assumptions on which it is based. After reviewing this debate and its implications for public policy on climate change, the paper sketches a way in which more technical economic analysis and public dialogue might be combined. (shrink)

Accounting for future generations is central in energy ethics and the ethical matrix can be used to reveal ethical impacts on them. However, the way it integrates future generations is questionable. The aim of this paper is to show why this tool does not consider ethical impacts on future generations appropriately and to propose a novel temporalized framework, which characterizes future people according to temporal, spatial and role features. By stimulating the disclosure of intergenerational conflicts, this temporalized matrix provides support (...) for a more nuanced overview of ethical impacts across generations, crucial in the field of energy ethics. (shrink)

Mainstream climate economics takes global warming seriously, but perplexingly concludes that the optimal economic policy is to almost do nothing about it. This conclusion can be traced to just a few “normative” assumptions, over which there exists fundamental disagreement amongst economists. This paper explores two axes of this disagreement. The first axis measures faith in the invisible hand to adjust the natural thermostat. The second axis expresses differences in views on the efficiency and equity implications of climate action. The two (...) axes combined lead to a classification of conflicting approaches in climate economics. The variety of approaches does not imply a post-modern “anything goes”, as the contradictions between climate and capitalism cannot be wished away. (shrink)

Mitigation of climate change is often described as a tragedy of the commons. According to this theoretical framework, it is collectively rational for present-generation countries to mitigate climate change, but not individually rational to do so. It is rather in national self-interest to ‘free-ride’ on the mitigation actions of other countries. In this paper, I discuss two arguments criticizing this view. According to these arguments, it is in most cases individually rational for present-generation countries to mitigate, i.e., it is in (...) their national self-interest. The first argument focuses on national self-interest in terms of economic efficiency, the second on national self-interest in terms of national security. I conclude that the critical arguments to a large extent are tenable, but that they seem to underestimate the significance of those cases in which it is not in national self-interest to mitigate climate change. In these cases the tragedy of the commons framework is still applicable. (shrink)

The perspective from the USA which is provided in this issue shows that environmental debate is still alive in that country although, from an outsider' s perspective, the debate seems to be an increasingly restricted and uncertain one. As noted in this special issue, North America is regarded as having an environmental movement which is under duress and in need of reinvigoration. Among the conflicted values of individual citizens, materialism and markets win in a political economy dominated by instrumentality. As (...) Stewart surmises, in reviewing the first three contributions, ' Instrumentality is revealed here as a mode of selfishness when we take into account the disastrous effects an instrumental approach to nature today will have on the future of nature itself.' What role then for aesthetics, spiritual values, and non- humans? As span classshrink)