1. Department of Geography, University of Manchester, Arthur Lewis Building, Oxford Road; Manchester M13 9PL
2. Institute of Philosophy and Sociology, Polish Academy of Sciences, Graduate School for Social Research, Nowy Świat 72; 00-330 Warsaw Poland
3. Institute of Environmental Science and Technology, Universitat Autònoma de Barcelona, Edifici ICTA-ICP, Campus de la UAB, 08193 Cerdanyola del Vallès; Barcelona Spain