What are the conflicting ethics and assumptions that lead to divergent views and technology? To help shed light on this question, Ian Barbour analyzes three social values: justice, participatory freedom, and economic development. He defends such environmental principles as resource sustainability, environmental protection, and respect for all forms of life and presents case studies in agriculture, energy policy, genetic engineering, and the use of computers. Finally, he concludes by focusing on appropriate technologies, individual life-styles, and sources of change: education, political action, response to crisis, and alternative visions of the good life.