Planetary justice: Prioritizing the poor in earth system governance

We are in the middle of a planetary crisis that urgently requires stronger modes of planetary stewardship and earth system governance. At the same time, the calls for considerations of justice are also becoming increasingly pronounced in sustainability research: there can be no effective planetary stewardship without planetary justice. Rapid planetary-scale processes have reinforced and further created vast injustices at international, national, and subnational levels. Often, the burden has fallen most severely on the poor and marginalized communities. Yet the literature on planetary justice tends to stay at the level of ideal conceptions and abstract normative arguments of justice theory, without an explicit concern for the needs of the poor. In this Perspective we focus discussions of planetary justice on the needs of the poorest. We discuss whether the dominant approaches to planetary stewardship and earth system governance are apt at realizing this notion of justice and what alternative approaches might be needed.