B.Sc. and M.Phil. University of Ghana (1985, 1993), Ph.D. Hiroshima University (1997). 1990-2003 Lecturer; 2004-2007, Senior Lecturer; 2007-2012 Associate Professor; 2012 to date, Professor. 2015 to date, Science Assessor of the University Appointment Board. 2016 to date Dean of Graduate School, University of Ghana. 2014-2018, Member of College of Basic and Applied Science's Advisory Board. Since August 2018, Member of University of Ghana Council.