Crewe is a Senior Research Fellow, Centre for the Advancement of Scholarship, U. of Pretoria (UP); Em. Vice-principal of UP; former pres., Acad. of Science of South Africa; fellow, Royal Soc. of South Africa; fellow, African Acad. of Science, and Royal Entomological Soc. of London. He obtained degrees in chemistry and biochemistry at the U. of Natal in Pietermaritzburg. He obtained his PhD in entomology at the U. of Georgia where he developed his interest in chemical communication and social organization in social insects. He was director of the Communication Biology Research Group, U. of Witwatersrand, for 10 years; dean, Science Faculties at both the univ. of Witwatersrand and Pretoria, and pres., Entomological Society of Southern Africa. He has been awarded the Gold Medal, Zoological Society of South Africa, the Gold Medal, Acad. of Science of South Africa and Ordre National du Mérite rank Chevalier.

Mizrahi is the professorial director of the Institute of Infectious Disease and Molecular Medicine at the University of Cape Town (UCT). She also directs the MRC/NHLS/UCT Molecular Mycobacteriology Research Unit and the UCT node of the DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, which is co-hosted by the Universities of Stellenbosch, Witwatersrand, and Cape Town. Awards include the 2013 Christophe Mérieux Prize from the Mérieux Foundation and Institut de France; UNESCO-L'Oréal For Women in Science Prize (Africa and Middle East region, 2000); the Gold Medal of the SA Society for Biochemistry and Molecular Biology (2006); and the Order of the Mapungubwe: Silver of South Africa (2006). She is fellow of the Royal Society of South Africa, a member of the Academy of Science of South Africa and a fellow of the American Academy of Microbiology and a Fellow of UCT.

Hassan holds BSC (1977) & MSC (1983) in Agric Econ from Univ of Khartoum, Sudan & MSC (1988) and PhD (1989) in Economics from Iowa State Univ. He is the ex-director of the Centre for Environmental Economics and Policy in Africa (CEEPA), at the University of Pretoria and previously held positions with CSIR in South Africa, and CIMMYT International. He has served as member of the UN Committee for Development Policy (CDP); Stockholm Environment Institute (SEI) Science Committee; CGIAR Science Council (ISPC); Human Sciences Research Council of SA; CGIAR Climate Change Challenge Program (CCCP) Board; Academic Advisory Panel for The World Development Report on Climate Change; Board of Stockholm Resilience Centre; GEF Science and Technical Advisory Panel (STAP IV); Science Panel of the Millennium Ecosystem Assessment. His honours include, member, Academy of Sciences of South Africa (since 2005); University of Pretoria Chancellor Medal for Research (2011); Four times Univ. of Pretoria “Achiever: Academic Excellence” (2005 to 2014). He is founding chief editor of the African Journal of Agric. and Resource Economics and has published more than 140 refereed publications including 12 books.