Roger-Mark De Souza is the director of population, environmental security, and resilience for the Woodrow Wilson Center in Washington D.C. He leads programs on climate change resilience, reproductive and maternal health, environmental security, and livelihoods. Before joining the Center in 2013, Mr. De Souza served as vice president of research and director of the climate program at Population Action International, where he provided strategic guidance, technical oversight, and management of programs on population, security, gender, climate change, environment, and reproductive health. From 2007 to 2010, he led a multi-million dollar foundation and corporate fundraising program on climate change at the Sierra Club. Prior to working at the Sierra Club, he directed the Population, Health, and Environment Program at the Population Reference Bureau for 10 years, where he designed and implemented research, communications, and capacity-building projects in the United States, Africa, Southeast Asia, and Latin America and the Caribbean. His expertise is on a range of demographic and environmental topics including migration, reproductive health, resilience programming, and climate change adaptation. He is a member of the Global Resilience Academy and serves on the US National Science Foundation Advisory Committee for Environmental Research and Education. He has graduate degrees from George Washington University and the University of the West Indies. He is originally from Trinidad and Tobago.