Uses a multi-disciplinary approach to understand global challenges related to waste. Discusses cradle-to-cradle design, upcycling, diminishment of environmental impacts, and enterprise opportunities for marginalized populations. Studies zero-waste strategies worldwide; examines different models of collection, recycling, waste management, and businesses developed in low-income settings; and researches public policy that supports sustainable, integrated waste management systems. Teams develop solutions around waste-related challenges, in partnership with wastepickers, municipal governments, and private sector and community organizations. Includes guest speakers and field trips, as well as opportunities for IAP or summer travel. Students taking graduate version complete additional assignments.