ABSTRACT
In this editorial, we consider the ways in which liberal constitutionalism is challenged by and presents challenges to the climate crisis facing the world. Over recent decades, efforts to mitigate the climate crisis have generated a new set of norms for states and non-state actors, including regulatory norms (emission standards, carbon regulations), organising principles (common but differentiated responsibility) and fundamental norms (climate justice, intergenerational rights, human rights). However, like all norms, these remain contested. Particularly in light of their global reach, their specific behavioural implications and interpretations and the related obligations to act remain debatable and the overwhelming institutionalization of the neoliberal market economy makes clear and effective responses to climate change virtually impossible within liberal societies.