Sufficientarianism is a theory of social justice that determines individual entitlements by setting a threshold of what is enough for a decent life. Sufficientarianism therefore seems to be a suitable ally for theories of climate justice, because it restricts claims of justice to a minimum. Furthermore, the notion of sufficiency has been theorized in ecological discourse, so there is pertinent conceptual overlap between the two perspectives. In this paper, I aim to combine sufficientarianism with eco-sufficiency. I will use a framework (...) of needs to highlight different normative urgencies involved in practices that involve carbon emissions. However, as I will argue, the normative urgency of needs might cause problems for restricting emissions to levels that are compatible with planetary limits. In brief, the very aim of achieving sufficientarian justice might clash with the aim of eco-sufficiency. Sufficientarians should therefore critically engage with needs satisfiers as well, which are the means provided to satisfy needs. This step in my argument will be achieved through complementing sufficientarianism with an element of comparative justice, that is, interpersonal and diachronic considerations that help to determine the comparative urgency of claims. The overarching aim of sustainable sufficientarianism is to provide enough for everyone to live a decent life over time. (shrink)

This paper argues that the Lockean proviso can be utilized as a relevant principle of justice for food security under global climate change. Since reducing GHG emissions is key to enhancing food security, we suggest a global food security scheme that systematically allots, among all people, access to GHG sinks in food systems impacted by global climate change. For consideration of the scheme, it is important to have a principle of justice. Furthermore, it should incorporate the value of fairness. A (...) relevant principle of climate justice for food security should meet the following criteria: (1) the parties concerned under the scheme are states; (2) fairness does not undermine the requirement that the basic needs of all people must be met; (3) when determining fair burdens, a fair distribution of the rights to use GHG sinks should be sensitive both to each state’s responsibility for its GHG emissions and to (4) each state’s effort to reduce such emissions. With them in mind, first, we argue that the Lockean proviso can provide legitimate guidance for each state. Second, the Lockean proviso reasonably enjoins that a state has a right to a food system that secures its citizens’ basic needs, and a duty to meet the basic needs of other people. Third, the Lockean proviso can be deployed as a principle of both global justice and intergenerational justice for food security. Finally, the Lockean proviso enables us to count the reduction of GHG emissions by each state as “the fruits of its labors”. (shrink)