Arild Angelsen is professor of economics at the Norwegian University of Life Sciences (UMB) and a senior associate at CIFOR, Indonesia. Over the past 20 years he has conducted extensive research into the causes of tropical deforestation and its interaction with poverty, tenure and government policies. Recent work has investigated how Reducing Emissions from Deforestation and forest Degradation (REDD+) can be included in a global climate regime. Angelsen is global coordinator of the Poverty Environment Network (PEN), a CIFOR-led research programme collecting detailed information from about 8000 households in 24 developing countries on forest use and management. He has broad field experience from Southeast Asia and eastern Africa, and has lived in Uganda, Indonesia, Australia and the USA.