लेखक: Christel Donnelly

Franz W. Gatzweiler has a background in agricultural, natural resource, ecological and institutional economics. He has university degrees from the University of Bonn and Humboldt University of Berlin, Germany. Before becoming executive director of the global interdisciplinary science programme on Urban Health and Wellbeing, he was senior scientist at the Center for Development Research (ZEF), University of Bonn, where he was principle investigator for research projects on marginality and technological and institutional innovations for rural smallholders, in Subsaharan Africa and South Asia. Yong-Guan Zhu is a professor of Soil Environmental Sciences and Environmental Biology and the director general of the Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian Province, China.