President and CEO since May 2005 of the Millennium Institute USA; Chief Executive and Director General, 1994 – 2004 of the International Centre of Insect Physiology and Ecology (ICIPE) Kenya; Director Biological Control Program andDirector Plant Health Management Division 1979 to 1994 at the International Institute of Tropical Agriculture (IITA) Nigeria; Coordinator of the Agriculture chapter of the UNEP Green Economy Report , 2011 and of the UNEP Report on the Ecological Bases of Food Security, 2012; Co-Chair of the International Assessment of Agricultural Science and Technology for Development (IAASTD), 2003-2009. Laureate of Right Livelihood Award 2013, World Food Prize 1995, Tyler Prize for Environmental Achievement 2003 and Foreign Associate in US National Academy of Sciences in 1999.