German Sustainability Award 2013, stage backdrop, Hr. Schulze-Hausmann, Dr. Harlem Brundtland; Prof. Töpfer, Dr. Harlem Brundtland, Dr. Hauff

German Sustainability Award 2013, stage backdrop, Hr. Schulze-Hausmann, Dr. Harlem Brundtland; Prof. Töpfer, Dr. Harlem Brundtland, Dr. Hauff