Abstract

Many people living in highly industrialised countries and elsewhere emit greenhouse gases at a certain high level as a by-product of their activities, and they expect to be able to continue to emit at that level. This level is far above the just per capita level. We investigate whether that expectation is legitimate and permissible. We argue that the expectation is epistemically legitimate. Given certain assumptions, we can also think of it as politically legitimate. Also, the expectation is shown to be morally permissible but with major qualifications. The interpretation of the significance of the expectation is compatible with the understanding that historical emissions should count in terms of fairly distributing the benefits of emission-generating activities over people’s lifetimes but constrains the way in which we may collectively respond to climate change.