As a business paradigm, the circular economy represents a maturing of the global business community. Under this philosophy, biological and mineral resources are no longer simply there for the taking, but are precious natural capital to be stewarded. Air, water, and ecosystems are no longer viewed as dumping grounds for wastes, but are community commons that must be protected. And products are not simply trinkets to be used and discarded, but are designed to serve their function, then to be reused, repurposed, or recycled with the least possible waste. Now, in this period of unprecedented climate change, it is essential for companies, governments and institutions to apply the lessons of the circular economy to our greatest challenge – stabilizing the Earth’s climate.