Professor Njuguna S. Ndung'u 11 Jun 2020
Karen Rial-Lovera 24 Dec 2019
Rémi Nono Womdim 19 Dec 2019
Danette Breitenbach 13 Mar 2019
Esther Ndumi Ngumbi 22 Mar 2018
Mark McCallum 10 May 2017
Leopold Obi 22 Feb 2017
Esther Ndumi Ngumbi 3 Feb 2017
Charlotte Hebebrand 10 Nov 2016
Kristen Lyons and Peter Westoby 17 Sep 2015