Bachelor, University Nairobi, Kenya, 1976. Master of Arts, University Nairobi, Kenya, 1984. Doctor of Philosophy, University Nairobi, Kenya, 1993.
Master of Arts, University McGill, Montreal, Canada.
Agricultural research officer Kenya Agricultural Research Institute, Nairobi, 1977—1985. Associate professor University Nairobi, since 1985. Visiting research scientist Commonwealth Science & Industrial Research Organization, Perth, 1997, World Agroforestry Center, Nairobi, 1997—2003.
Chairman, technical advisory committee environmental National Environment Management Authority, 2003—2004. Visiting research professor Kenya National Cleaner Production Center, 2003—2007. Associate and environmental expert Master of Arts Consulting, since 2007.
Environmental consultant United Nations Environment Programme, Nairobi, 2005—2006. Lead environmental impact assessment expert HVA International, Nairobi, since 2007, Master of Arts Consulting, Nairobi, Edon Consultant, Nairobi, 2007. Environmental impact assessment, audit expert University Nairobi, since 2007.
Country expert United Nations Industrial Development Organization, Nairobi, 2007—2008.
Member, board governors Kambaa Girls High School, 2004—2008. Member of International Association Hydrological Sciences.
Children: Naima Gladys Wangari, Sophia Muthoni, James Rashid, Yusuf Kibaya.