Murenzi (PhD Louvain, Belgium) is Executive Director of TWAS from 2011, with a year interruption across 2016-2017 when he served as Director of the Division of Science Policy and Capacity Building in UNESCO's Natural Sciences Sector (July 2016). He previously was Minister of Science, Technology and Scientific Research in Rwanda and Director of the Center for Science, Technology and Sustainability at the American Association for the Advancement of Science, Washington, DC; he was also visiting Professor at the University of Maryland. He was Chair and Professor in the Department of Physics at Clark Atlanta University, USA. He was also designer of the two-dimensional continuous wavelet transform. In 2012 he was elected as a Fellow of the African Academy of Sciences (AAS). He chairs the UN Secretary General's High-level Panel of Technology Bank and Science, Technology and Innovation Supporting Mechanism dedicated to the Least Developed Countries; he is a Member of the ITU/UNESCO Broadband Commission for Digital Development and of the Carnegie Mellon University President’s Global Advisory Council.