Roy Bhaskar is the originator of the philosophy of critical realism, and the author of many acclaimed and influential works including A Realist Theory of Science, The Possibility of Naturalism, Scientific Realism and Human Emancipation, Dialectic: The Pulse of Freedom, Plato Etc., From Science to Emancipation and (with Mervyn Hartwig) The Formation of Critical Realism. He is an editor of Critical Realism: Essential Readings and Interdisciplinarity and Climate Change and was the founding chair of the Centre for Critical Realism. He is currently a World Scholar at the University of London Institute of Education.Karl-Georg Høyer is Professor and Research Director at Oslo University College. He holds a Master’s Degree in technology and a PhD in social sciences with a dissertation on "Sustainable Mobility". Most of Høyer’s research is related to sustainable development, with a main focus on transport and energy. Petter Næss is Professor in Urban Planning at Aalborg University, Denmark, with part-time position at Oslo University College, Norway. Main research interests: land use and travel; impacts and driving forces of urban development; philosophy of science. His most recent book is Urban Structure Matters (Routledge, 2006).