Mark Constas is an associate professor in the Charles H. Dyson School of Applied Economics and Management at Cornell University and an international professor of agriculture and life sciences. He is also a fellow at the Atkinson Center for a Sustainable Future and a faculty affiliate of the Center for Global Sustainable Enterprise in the Johnson School of Management. With a specialization in impact evaluation and measurement, his research seeks to develop and test assessment tools to measure the ways in which households and communities achieve and maintain wellbeing in shock-prone contexts. His research is presently focused on the sub-Saharan region of Africa, where droughts, environmental stresses, and political conflict undermine the livelihoods and threaten the wellbeing of vulnerable populations. He has recently initiated a set of projects that are focused on resilience measurement in Somalia and Kenya, working in close coordination with regional organizations and governmental authorities. Mark is currently serving as chair of the Resilience Measurement Technical Working Group, an effort jointly coordinated by the United Nations’ Food and Agriculture Organization and the World Food Program, with support from the European Union and the United States Agency for International Development. Professor Constas’ work has been published in peer-reviewed journals and in other forms of publication. His most recent work appeared in the journal of Food Security, in the Proceedings of the National Academy of Sciences, and in reports issued by the Food Security Information Network.