International think tanks in the Think20 group (T20) today called upon the twenty largest industrialized and emerging countries (G20) to foster inclusive societies and sustainable growth. The appeal came from the T20 chairmen Dennis J. Snower, President of the Kiel Institute for World Economy Kiel (IfW), and Dirk Messner, Director of the German Development Institute / Deutsches Institut für Entwicklungspolitik (DIE) in Bonn, at the end of a two-day conference in Berlin, attended by more than 800 international experts from academia, busines, civil society, and government.