Alex de Sherbinin is a senior researcher at the Center for International Earth Science Information Network (CIESIN), an environmental data and analysis center within the Earth Institute at Columbia University. He serves as Deputy Manager of the NASA Socioeconomic Data and Applications Center hosted by CIESIN and Coordinator of the Population-Environment Research Network, a network of 2,000 researchers from around the world. He is also a co-author of the Environmental Sustainability Index and Environmental Performance Index reports. Alex is currently enrolled as a fast-track PhD candidate at the Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Netherlands. His dissertation is on spatial approaches to climate vulnerability assessment. He has published widely on the human aspects of environmental change at local, national and global scales, including on climate change impacts, vulnerability, and adaptation. Prior to CIESIN he worked at the International Union for Conservation of Nature (Switzerland) and the Population Reference Bureau (Washington, DC), and also served as a Peace Corps Volunteer (Mauritania, West Africa).