Turning to the great crisis of our time, this chapter examines the climate crisis. It explores the systemic and historical relationship between capitalism and climate change, including a continual reliance on an extractive model of fossil fuel development. It discusses how accelerating climate change is reshaping patterns of production, investment, and accumulation, and the spatial, geographic, and financial frontiers of capitalist development. It explores the implications of the ecological crisis for the future of modernity, the liberal-democratic state form, and capitalist civilisation. The chapter concludes by reflecting on whether frameworks in political economy are fully capable of understanding the climate crisis and by discussing the implications of recent developments in climate politics for climate change.