This document summarizes the proceedings of an international conference on environmental education which was organized jointly by Unesco and the United Nations Environment Programme (UNEP). The conference attracted 300 participants and observers from 80 countries, including experts and representatives of 15 international and national nongovernmental organizations. The document highlights the plenary sessions, working commissions, and five symposia, which dealt with such topics as: (1) environmental education and teacher training; (2) environmental education in general university education; (3) specialized environmental education; (4) international understanding of environmental problems; (5) sustainable development; (6) communication processes; (7) the role of biosphere reserves and other protected areas; and (8) national experiences and the contribution of nongovernmental organizations in the development of environmental education and training. (TW)