It gives us great pleasure in publishing the IGCS Bulletin Vol. 4 (4). Read about IGCS’ numerous activites with German and Indian researchers in the Peri-Urban Sustainability Project of IGCS, workshops and foreign guests (German Foreign Office, BayInd Student group) at IIT Madras. IGCS hosts a new German long-term reseacher, Dr. Karl Beelen from Heidelberg an several students from TU Berlin, RWTH Aachen and Bauhaus University Weimar. An interesting commentary is published by Dr. Avilash Roul, IIT Madras, on The Sustainable Development Goals and India´s Sustainability.