This article analyzes more than four decades of environmental law, regulation, and governance in various Anglo-Saxon and global jurisdictions. It shows how, after the heydays of law and command and control and the swing to economic instruments, voluntarism, and light-handed initiatives, new phases evolved-their most important manifestations being pluralistic regulation, new technologies, compliance, and new governance. It shows how each of the frameworks examined proposes its own solutions and has something valuable to offer, as well as its own limitations. The article concludes by discussing a fundamental challenge confronting the field, namely, how to orchestrate the many possible approaches and relationships available on the legal, regulatory, and governance spectrum.