This study considers the problems of defining and valuing environmental damage from the perspective of international and comparative law. The need for a broad and systematic evaluation of this issue is illustrated by the number of topics presently on the international law-making agenda to which it is relevant, including the UN Compensation Commission's decisions on compensation for environmental losses suffered by Kuwait in the Gulf War, nuclear and oil pollution liability regimes, the development of an environmental liability protocol to the Antarctic Treaty and other agreements on bio-safety and genetically modified organisms. It is thus an important element in contemporary efforts to strengthen legal remedies for environmental harm which does not necessarily come within traditional categories of legally protected personal or property rights. The contributors include experts in national and international law, civil and common law, as well as in the laws of developed and developing states, an economist and a member of the UN Compensation Commission.