Existential Risk, Climate Change, and Nonideal Justice

Climate change is often described as an existential risk to the human species, but this terminology has generally been avoided in the climate-justice literature in analytic philosophy. I investigate the source of this disconnect and explore the prospects for incorporating the idea of climate change as an existential risk into debates about climate justice. The concept of existential risk does not feature prominently in these discussions, I suggest, because assumptions that structure ‘ideal’ accounts of climate justice ensure that the prospect of climate change as an extinction-level threat does not arise. Given persistent noncompliance with mitigation duties, however, we have reason to revisit these assumptions. I argue that the most promising way for theories of climate justice to account for the significance of existential risk is to look to the practices of protest and resistance in which a concern about extinction or global catastrophe is frequently given expression.