This paper puts forward an alternative view on sustainable development, arguing that the separation between the economy, the environment and the social in the Brundtland model obscures the societal character of the economy, the economic bases of the social, and the fact that the environment is a societal product. We differentiate between strong and weak sustainability, arguing that the threat of environmental degradation can only be addressed at the level of the relations of production, consumption and political relations. Building on this perspective, we advocate a form of transformative environmental education which engages learners and teachers in a process of self-reflective transformation. We illustrate this through two examples: action competence and Boal's Theatre of the Oppressed. (Contains 2 notes, 1 table and 2 figures.)