OverviewThe fifth edition of Environmental Impact Assessment in Australia: Theory and Practice has been revised in the context of evolving EIA practice around Australia and introduces a number of case studies throughout the text to complementthe theory. The case studies demonstrate key points within the text and should not be viewed as the only way of doing EIA (or a component of EIA). Thomas's experience in the historical context and evolution of environmental impact assessment and the research in this area of EIA provided in previous editions largely remains, although updated where relevant. The fifth edition focus is on introducing more context to the evolving theory and practice regarding impact assessment, specifically strategic environmental assessment, sustainability assessment, the role of EIA in developing countries and the issues surrounding post EIA monitoring. Elliott's experience working in EIA for the State Government of Victoria over the past eight years has provided insight into how EIA is undertaken in practice. Reflected throughout this edition is this practical application - how good assessments can lead to better decisions as well as how politics plays an integral role in EIA. Additionally the Commonwealth, State and Territories EIA procedures, have been revised, as many of these jurisdictions have had their procedures reformed, including amendments to their EIA legislation, or to existing EIA Guidelines/administrative procedures. Notwithstanding these changes, the way in which EIA is undertaken still remains. That is, screening, scoping, EIS production, public review and Assessment.