This review provides an overview of the ethics of extinctions with a focus on the Western analytical environmental ethics literature. It thereby gives special attention to the possible philosophical grounds for Michael Soulé’s assertion that the untimely ‘extinction of populations and species is bad’. Illustrating such debates in environmental ethics, the guiding question for this review concerns why – or when – anthropogenic extinctions are bad or wrong, which also includes the question of when that might not be the case (...) (i.e. which extinctions are even desirable). After providing an explanation of the disciplinary perspective taken (section “Introduction”), the concept of extinction and its history within that literature are introduced (section “Understanding extinction”). Then, in section “Why (or when) might anthropogenic extinctions be morally problematic?”, different reasons for why anthropogenic extinctions might be morally problematic are presented based on the loss of species’ value, harm to nonhuman individuals, the loss of valuable biological variety and duties to future generations. This section concludes by also considering cases where anthropogenic extinctions might be justified. Section “How to respond to extinctions?” then addresses a selection of topics concerning risks and de-extinction technologies. Finally, the section on “Extinction studies” introduces other viewpoints on the ethics of extinction from the extinction studies literature, followed by the “Conclusion”. (shrink)

The central question in this paper is whether anthropogenic mass extinction is ethically problematic above and beyond the sum of extinctions involved. The point of asking this question is not to determine the ethical status of anthropogenic massive extinction, which is clearly ethical horrendous. It is to see if - as is the case with interrogating the wrongness and badness of extinction - answering it illuminates something about the value of what is being lost and sharpens the considerations that substantiate (...) the view; and, if so, whether that might be useful in the context of evaluating mooted approaches to mitigating or adapting to it. The view defended is that massive extinction driven by undermining the conditions that make life forms possible for diverse and higher taxonomic groups constitutes a planetary shift, a phase change, different in kind from merely accelerated anthropogenic change. Justified partiality to the current assemblages of species and biomes is grounded in human relationships, dependencies, histories, and connections with this particular planetary state. This partiality warrants recognizing the loss of this state of the planet - these biospheric conditions, species assemblages, and biomes - as bad, above and beyond the individual harms and species losses involved. This account explains and substantiates why a mass extinction is worse than an equal number of extinctions spread over multiple systems or planets, all other things being equal. This account also provides reason not to embrace the anthropocene or embark on a synthetic age. (shrink)

The mass extinction visited upon us by capitalism involves many kinds of devastation. Here I clarify the grounds for assessing the most obvious of these harms, i.e., decimation of species diversity. The thesis that variety among species has intrinsic value motivates, and in turn follows from, the “variable value view” (VVV) of abundance within any given species. In contrast, standard axiologies have no place for the intrinsic value of species diversity. I show that the VVV provides a better justification than (...) the latter do, of the way in which a widely-used empirical indicator summarizes the overall state of life on Earth. These considerations favor ecocentric value theory – which ascribes intrinsic value to properties of ecological wholes, like species diversity, that do not supervene on the well-being of their constituent organisms – over its main competitors. I conclude by widening the focus from wild nature alone to the biosphere comprising both wilderness and the domesticated realm. This broadened perspective helps to link the science and ethics of biodiversity with the political struggle to extract ourselves from the moral abyss of mass extinction. (shrink)