This seminar examines the sustainability of cities and regions. A “sustainable community” is one in which new development improves the quality of life for people in the community, while preserving environmental functions. It means that we do not narrow the choices of future generations in order to meet the needs of this generation. It means passing an environment and an accumulation of resources on to our children that will allow them to live at least as well as, and preferably better than, people do today. Many scholars have argued that a sustainable community also represents a just society, with adequate and affordable housing, health care, and other essential services to residents, a safe and crime-free environment, and humane work environments. Moreover, a sustainable community is one with a healthy economy where land and community resources are used efficiently and effectively.