The vast majority of people in the industrial world, and now a majority of the world's peoples altogether, live in or near large cities. Some are mega-cities, caused by crises and a source of suffering. Under any rational order, they would not exist . Others are treasures, centers of culture and learning. Most are somewhere in between. In any case, they are the locus of politics and the struggle for change. All matter relation to them, from urban design to community organizing, will be the focus of this department.