In 2009, the German Physical Society (DPG) and the Association of German Scientists (VDW) discussed issues of safety and retrofitting, the environment and sustainability, science and responsibility, education and science. The volume contains the contributions of Stephan Albrecht, Gerhard Barkleit, Nina Buchmann, Christopher Coenen, Jayantha Dhanapala, Christian Forstner, Klaudius Gansczyk, Hartmut Grassl, Manfred Hampe, Hans R. Herren, Frank von Hippel, Martin Kalinowski, Konrad Kleinknecht, Kevin Knobloch, Wolfgang Liebert, Klaus Mayer, Heidi Meyer, Wolfgang Neef, Götz Neuneck, Frank Schilling, Jürgen Schneider, Jack Steinberger, Ernst Ulrich von Weizsäcker, Manuela Welzel-Breuer, Albert Zeyer.
