This is a comprehensive reference work, textbook, and sourcebook on the environmental education policies implemented in industrialized and developing nations since initiation of the benchmark UNEP-UNESCO International Environmental Education Programme at the Belgrade Workshop in 1975. The contributing authors cover both historical and international perspectives with particular reference to the 1992 debates in Rio. The book presents new information on areas for future action in teacher training, university-level environmental education for developing countries, and environmental education projects and networks for students and adults.