Kathrin Zeller serves as a Network Manager for the Waste to Resources Network at C40, aiming for the acceleration of the transition from solid waste management towards sustainable materials management. In her most recent experience in Germany she worked at a municipal PPP for waste treatment in the city of Cologne within their international projects. Prior to that she served as a project coordinator for topics of climate, environment and energy at the Konrad Adenauer Foundation in Rio de Janeiro. One of her projects was to help establish the Brazilian city network CB27. Kathrin holds a master degree from the University of Cologne/ Germany in Regional Sciences of Latina America with a focus on theory of economic and social policy, and a MBA of the Leuphana University Lüneburg/ Germany in Sustainability Management. Kathrin is based in the office in Rio de Janeiro and speaks German, English and Portuguese.