Rainer Rosegger is a sociologist who has been active in the fields of sustainability and urban development for ten years. For the last four years, Rosegger has been studying the concept of Cradle to Cradle Design. Accompanied by Tammo Trantow, he is currently advising the city of Graz and the Republic of Slovenia on the implementation of the principles of circular economy. He is also looking for ways to apply the Cradle to Cradle concept to development projects in Africa.