The first edition of this book was written at the time when the Brundtland Report was coming out, and ozone depletion and global warming were topics being disputed by a number of people and organizations. A lot of changes have happened since then. Sustainable development has become a guiding principle in environmental management, although controversies are still very much in evidence regarding what sustainable development is and how it can be achieved. The United Nations Conference on Environment and Development was held in Rio de Janeiro in 1992. The United Nations, the World Bank, national governments and the people of the world in general are much more conscious of and knowledgeable about the state of the environment. Ozone depletion and global warming are not controversial any more. The discussions now concentrate on the extent and effects of global warming. The new version of the book includes the changes.
I have added two new chapters, one on global warming and stratospheric ozone depletion and the other on environmental governance at various levels. However, as far as possible I have kept the old format and the text, which have been popular, although new material has been added to all the chapters to bring them up to date and to stress the management side of the environmental issues. Three new boxed case studies have beeen added and bullets have been used to highlight major issues and examples. The new diagrams were, as in the previous edition, drawn by Lee Li Kheng. A. Fraser Gupta and Mukul Asher have read parts of the new draft. Anthea has continued to be extremely supportive.