Part 1 Introduction: the imperative of sustainability, Jorg Kohn et al. Part 2 Conceptual framework revised: sustainability concepts - from theory to practice, Melinda Kane; what type of economic theory dealing with the environment do we need? Jan van der Straaten; principles of sustainability - protection, investment, co-operation, and innovation, Thomas Sikor, Richard B. Norgaard; hierarchies in human affairs -microfoundations and environmental sustainability, John Gowdy; system hierarchy, change and sustainability, Jorg Kohn; organising diversity, Joachim Schutz; throughput, scale, material input, Fred Luks; reflections upon the role of moral sentiments in economics, Clive L. Spash. Part 3 Sustainable production: environmental and economic benefits of sustainable agriculture, David Pimentel; balancing private rights and public interests - lessons from Pacific salmon and global fishery crises, Bruce Rettig; firms and dematerialization, Julia Haake et al; sustainability pollutants and multiple targets - the case of tropospheric ozone and acidification in Europe, Ekko van Ierland, Erik C. Schmieman. Part 4 Sustainable consumption: consumer behaviour - a modelling perspective in the context of integrated assessment of global change, Wander Jager et al; some themes in the discussion of the quality of life, Inge Ropke; sustainable consumption - a research agenda, Friedrich Hinterberger et al. Part 5 Sustainability and political economy: politics and economics in relation to environment and development - on participation and responsibility in the conceptual framework of economics, Peter Soderbaum; a distributional barrier to ecological modernisation, Frank J. Dietz, Jan van der Straaten; some methodological reflections - a plea for a constitutional ecological economics, Andreas Renner.