Historians have long explored the links between the environmental and the economic. Yet as the global climate crisis deepens with every passing month, it becomes ever more obvious just how related the environmental and the economic are. Driven by the by-products of economic growth, rising sea levels, floods, droughts, and extreme heat devastate ecosystems and claim increasing numbers of lives. They also continue to wreck enormous economic damage, itself the cause of untold immiseration. The climate crisis, most obviously, is an environmental crisis. But it is also an economic crisis and a crisis of political and social action.