The locus of innovation moving forward is likely to be outside of the traditional domain of environmental law — in areas that are at the frontiers of environmental law, but in the heart of related fields such as energy law, corporate social responsibility, and insurance. At the same time, environmental law’s heartland will continue to dominate the regulation of environmental harms for the foreseeable future. The future of environmental law therefore will be determined by a dialectic relationship between the heartland and frontiers of environmental law; each playing its own crucial role in the development of the field, in tension but also significantly dependent on the other.