At the heart of industry’s claim that the world’s economies can expand without limit is the idea of “green growth.” Like the fabled economist’s can opener, the green-growth assumption allows us to believe that the impossible can be made possible. In this case, that means generating greater aggregate wealth year by year while emitting fewer tons of greenhouse gases, extracting fewer tons of resources, and causing less ecosystem destruction, biodiversity loss, and other damage to the Earth and our fellow humans.