Martin van Ittersum holds a PhD (1992) in Agricultural and Environmental Science from Wageningen University. He is a professor at the Plant Production Systems group of the same university. His research and teaching focus on research concepts and methods for the analysis, design and integrated assessment of agricultural systems from field to farm, regional and global level. He has led and is leading a large number of (inter)national projects dealing with global food availability, integrated assessment of agricultural systems, yield gap analysis, phosphorus scarcity and climate change. He was the coordinator of the SEAMLESS project: System for Environmental and Agricultural Modelling; Linking European Science and Society; an EU FP6 project (2005-2009) with 30 universities and approx. 150 researchers. Currently he is co-leading the Global Yield Gap Atlas project (funded by the Gates foundation www.yieldgap.org) and a large strategic programme of Wageningen University aiming to map options for sustainable intensification. He has been co-editor-in-chief of Agricultural Systems, is member of several editorial boards and guest-edited more than 10 special issues and books. In 2013 he was the co-chair of the 1st International Conference on Global Food Security.