This part considers how markets and other institutions decoupled society and environment and how to recouple them. Transitions along the way include the Western belief in progress by controlling nature, the reorganization from feudal to market systems, as discussed by Polanyi, and the idea that land can be divided and owned. The challenges and opportunities of collective use, of common-pool resources, were discussed and debated by Gordon, Hardin, and Ostrom. Economics needs to integrate ecology, as Daly emphasized. The implications can be dire, as Sen showed for famines. Catton and Dunlap made a like plea for sociology and the environment, and Bullard showed the environmental justice implications of unfairly sited urban waste and pollution. Lele explored the disconnect between the ideal of sustainable development and its application, arguing for knowing first the complex links between social and natural systems. Norgaard frames development as an evolutionary problem, arguing that knowledge, values, technology, organizations, and the environment coevolve. Diverse experimentation can provide the raw material for selecting more-sustainable paths.