Lessons learnt from two decades of international environmental agreements: law

As Patricia Birnie cautiously and prophetically put it in the inaugural issue of this journal (INEA 1, January 2001, p. 74), “we do not know whether States and the tentative regimes they have so far established can withstand the pressures of globalization of trade and degradation and over-exploitation generated by advances in technologies for locating, fertilizing, harvesting, processing and modifying natural resources and biodiversity. This is truly terra incognita in which such seeds of destruction may already be implanted.” Among the 600 or so papers and reviews published in INEA from 2001 to 2020, more than 70 deal wholly or partly with legal aspects of environmental problems and the international dimensions of environmental justice. While the main focus of INEA has been on issues of public international (inter-state) law , there have also been important inputs drawn from comparative legal analysis (of national legislation and judicial decisions) and from “transnational administrative law” that influence the effectiveness of multilateral treaties and their associated international institutions. Novel concepts and practices emerging from the environmental field (such as recourse to a range of “soft law” principles; flexible delegated standard-setting in the face of global change; and equitable differentiation of compliance duties) have inspired developments in related areas of contemporary international law-making and law-applying. At the same time, the very proliferation of multilateral and bilateral environmental instruments raised new questions and expressions of alarm over “treaty congestion” and “fragmentation” within the international law system. It is not the intention of this paper to explore the general interaction of international environmental law with neighboring disciplines such as international economic law or human rights law, but simply to record the “seismographic” impact of INEA on legal-intellectual discourse over these past two decades. To some extent, the role of the Journal in identifying both new prospects and new risks in this field could indeed be likened to that of a “canary in the coal-mine.” The lessons so learnt may thus offer new insights to help in averting the destruction which Birnie visualized, and to advance inter-generationally and intra- generationally shared values of environmental justice.