Sichere Energie im 21. Jahrhundert (Securing Energy in the 21st Century) (edited by Jürgen Petermann) provides facts, insights and background information on the energy debate and shows how it is possible to ensure a sustainable supply of energy. The 35 authors include journalists with relevant expertise, prominent scientists and politicians, among them Dr. Peter Hennicke, President of the Wuppertal Institute of Climate, Environment and Energy, and Dr. Hans-Joachim Ziesing of the Deutsches Institut für Wirtschaftsforschung (German Institute of Economic Research). The book was written for the general public and is illustrated with numerous detailed informational graphics.