As our century draws to a close, we are facing a whole series of global problems which are harming the biosphere and human life in alarming ways that may soon become irreversible. Concern with the environment is no longer one of many “single issues”; it is the context of everything else–of our lives, our businesses, our politics. The great challenge of our time is to build and nurture sustainable communities–social, cultural, and physical environments in which we can satisfy our needs and aspirations without diminishing the chances of future generations.
