In th is broad study of the social, economic, and conceptual changes needed on a global level for all of life to flourish in the 21st century continually invokes the norm of justice, which has become a central part of Catholic thought and magisterial teaching in the contexts of economic development, technological innovation and environmental degradation. In the editors’ view, any viable path to sustainability must also be just—whether as norms guiding policy decisions or in the development of a comprehensive ethics of ecology. Contributors to Just Sustainability represent a wide variety of perspectives from social, ethnic, geographic, and economic backgrounds, making it a truly global contribution to the increasingly pressing issues of environmental degradation, its effects on the people of the world, and ethical and moral responses.