Climate change politics refers to attempts to define climate change as a physical phenomenon as well as to delineate current and predict future effects on the environment and broader implications for human affairs as a foundation for political action. Defining the causes, scale, time frame, and consequences of climate change is critical to determining the political response. Given the high stakes involved in both the consequences of climate change and the distributive implications of policies to address climate change, climate change politics has been and remains highly contentious both within countries and across countries. Climate politics presents difficulties for study given its interdisciplinary nature and the scientific complexities involved in climate change. The international relations literature surrounding climate politics has also evolved and grown substantially since the mid-2000s. Efforts to address the consequences of climate change have evoked controversial ethical and distributive justice questions that have produced an important normative literature. These debates increasingly inform the ongoing negotiations surrounding responsibility for the problem of climate change and the policies required to address climate change. There is also a larger debate regarding the complex linkages between climate change and broader ecological as well as economic and political consequences of both the effects of climate change and policies designed to reduce greenhouse gas emissions or remove them from the atmosphere. As we enter the 2020s, a new debate has emerged related to the implications of the posited transition to the Anthropocene Epoch and the future of climate politics. Normative and policy debates surrounding climate change politics remain contentious without a clear path to meaningful political action.