Summarizes the science of climate change and impacts on the United States, for the public and policymakers.

The international community has long grappled with the issue of safeguarding the environment and encouraging sustainable development, often with little result. The 1992 Rio Declaration on Environment and Development was an emphatic attempt to address this issue, setting down 27 key principles for the international community to follow. These principles define the rights of people to sustainable development, and the responsibilities of states to safeguard the common environment. The Rio Declaration established that long term economic progress required a connection to environmental protection. It was designed as an authoritative and comprehensive statement of the principles of sustainable development law, an instrument to take stock of the past international and domestic practice, a guide for the design of new multilateral environmental regimes, and as a reference for litigation. This commentary provides an authoritative and comprehensive overview of the principles of the Declaration, written by over thirty inter-disciplinary contributors, including both leading practitioners and academics. Each principle is analysed in light of its origins and rationale. The book investigates each principle's travaux préparatoires setting out the main points of controversy and the position of different countries or groups. It analyses the scope and dimensions of each principle, providing an in-depth understanding of its legal effects, including whether it can be relied before a domestic or international court. It also assesses the impact of the principles on subsequent soft law and treaty development, as well as domestic and international jurisprudence. The authors demonstrate the ways in which the principles interact with each other, and finally provide a detailed analysis of the shortcomings and future potential of each principle. This book will be of vital importance to practitioners, scholars, and students of international environomental law and sustainable development.

Our planet is under siege. Assaults on the atmosphere -the greenhouse effect, the depletion of the ozone layer and increasing air pollution - pose a still unquantified threat to human life. The dumping of hazardous wastes, and land based sources of pollution, present a similar threat to the oceans. On land we are destroying a tropical forest the size of Austria every year, and more than a hundred species of wild plants and animals are lost forever each day. When the General Assembly of the United Nations established UNEP it charged us with reporting on the changing state of the world's environment, tracking the underlying causes of change, and working with governments to develop responses to those changes. Every year since 1974, UNEP has produced a State of the Environment report, focusing on one or more emerging environmental issues and always stressing the human factor -the impact of environmental quality on people and society. Three times since its inception (1982, 198 7 and 1992) UNEP has undertaken a more wide-ranging study. The results of the present study are the most disturbing of the three. However, not all the signs are negative. Throughout the 19 70s and into the 1980s, UNEP was able to report progress in some important areas. Environmental monitoring capacity was being rapidly improved in many parts of the world, and Ministries of the Environment were being set up in an attempt to deal with environmental threats in a more coherent way.

"From 3-14 June 1992, Rio de Janeiro hosted the United Nations Conference on Environment and Development (UNCED). The focus of this conference was the state of the global environment and the relationship between economics, science and the environment in a political context. The conference concluded with the Earth Summit, at which leaders of 105 nations gathered to demonstrate their commitment to sustainable development. This paper will summarize the goals of the Conference, what was accomplished, and what it all means to Canadians"--Introduction