Mandated by the ETH Board, the ETH Zurich, the EPFL and the WSL have set up a Working Group to combine their expertise to contribute to a sustainable spatial development. A three-part symposium is to be held in Zurich, Lausanne, and Berne to discuss responses to the question «What are the crucial research questions in the spatial sciences in Switzerland and in Europe?» The opening event takes place on 19 November 2009 in Zurich. More