Jeffrey David Sachs (United States): Distinguished American economist. Mr Sachs is Director of the Earth Institute, as well as a professor of sustainable development and health policy and management at the University of Columbia. He is also Special Advisor to the United Nations Secretary General, Ban Ki-Moon. From 2002 to 2006, Mr Sachs was Director of the UN Millennium Development Goals and Special Advisor on the programme to former Secretary General, Kofi Annan. Sachs is also President and co-founder of Millennium Promise Alliance, a non-profit organization working to eliminate extreme poverty around the globe.