The first half of this paper discusses the development of sustainability law. It takes as its basis that environmental law plays a central role in the achievement of sustainable development and that environmental lawyers and those from associated disciplines must come to terms with the imperatives of the internationally accepted concept of sustainable development. The second half of the paper deals with the implications of sustainability law for the teaching of environmental law, including the need to further liberate environmental law from the confines of law schools and lawyers, and to make it part of the common discourse of government, business and communities at large. A number of current initiatives in environmental legal education and training are canvassed, focussing on the Asia Pacific region.