Over thousands of years, human beings have built habitats in response to their increasingly complex needs. The ultimate form of these habitats is the modern city: a feat in which the benefits are self-evident. However, the city has grown into a paradoxical phenomenon. Providing for the present compromises the ability to provide for the future.The unidirectional metabolism of the city is consuming the world’s resources and disrupting the climate system at a rate that is not sustainab...