Cover Picture: Between Nationalism and Internationalism: The German Chemical Society In Comparative Perspective, 1867 – 1945 (Angew. Chem. Int. Ed. 37/2017)

150 Years of the GDCh Berlin was just a large village in 1867, at least in the eyes of August Wilhelm von Hofmann, but nevertheless, it had such an intellectually stimulating atmosphere that he left London and returned to Berlin. He promptly threw himself into his many functions, including organizing the chemists in Berlin and “the whole of Germany” at a time when Germany was finally on the verge of becoming a united country. The rise and fall of the Deutsche Chemische Gesellschaft (DChG; German Society of Chemistry) is recounted by J. A. Johnson in his Review on page 11044 ff. In 1945 the DChG was morally and organizationally in ruins, and it was not until 1949 that the Gesellschaft Deutscher Chemiker (GDCh; German Chemical Society) was formed: It was built upon the positive early history of the DChG, and is therefore now, in 2017, celebrating a 150 year jubilee. The highlights of the GDCh's celebrations are a ceremony in Berlin on September 10th and the Angewandte Fest Symposium the following day. Many of the speakers, as well as members of the Editorial and International Advisory Boards, have articles in this Special Issue. Green is the color of the GDCh and green is also the color of hope. We trust that chemists in the future will contribute even more to the benefit of humanity and our planet than they have done in the past. To help turn this hope into a reality is an aim of the GDCh's jubilee events in Berlin and of this Special Issue.