Dr. Stefan Schwarzer, physical geographer and permaculture designer, Schloss Tempelhof eG; worked for over 20 years for the United Nations Environment Programme (UNEP) in Geneva, where he dealt with global environmental issues.
Dr. Stefan Schwarzer, physical geographer and permaculture designer, Schloss Tempelhof eG; worked for over 20 years for the United Nations Environment Programme (UNEP) in Geneva, where he dealt with global environmental issues.