Executive Director, Integrated Research and Action for Development (IRADe), New Delhi. Former Member, Prime Minister's Climate Council. Has served as Energy and Development Consultant, World Bank, U.S. Department of Energy, EEC, Brussels, and UN agencies such as UNIDO, UNDP, FAO, UNU, UNESCO. Has given lectures in the US at Yale, Stanford, Columbia, Princeton and Harvard University, and in many other countries. Publications include nearly 200 project research papers and 25 books and monographs in the areas of energy, climate change and environment, and associated socio-economic issues with them. Recipient, Nobel Prize given jointly to the Intergovernmental Panel on Climate Change authors (2007).