Mark Radka heads the UN Environment Programme’s Energy and Climate Branch, where he manages the organization’s efforts to link the global energy and environment agendas. UN Environment’s focus is on helping countries reduce emission of greenhouse gases through broad cooperative efforts and supporting engagement by the financial industry in the sustainable energy sector. Mark has a special interest in the technology needs of developing countries and was a coordinating lead author of the IPCC’s Special Report on Methodological and Technological Issues in Technology Transfer. Before joining UNEP he worked on domestic and international environmental programmes with the U.S. Environmental Protection Agency and the World Bank, and was a U.S. Peace Corps volunteer in Thailand.

Mark received a Master of Public Policy degree in Environmental Policy from Harvard University's Kennedy School of Government, a M.S. degree in Environmental Engineering from the University of California at Berkeley, and a S.B. in Civil Engineering from the Massachusetts Institute of Technology.