Elizabeth Pollitzer holds a BSC Degree in Biophysics and a PhD in Information Science from King’s College London. Her academic career includes 20 years of research and teaching on Human Computer Interaction at Imperial College London, and over 20 years in advancing understanding among the scientific community on why and how historical gender bias in science knowledge-making has differentiated quality of research outcomes for women and men, often with worse effects for women. In 2001 she co funded the not-for-profit organisation Portia, which has led on and participated in many international projects to advance gender equality in science knowledge making, innovation and socio-economic development. In 2011 she set up the Gender Summit platform for dialogue between scientists, gender scholars and policy makers to look at the new empirical evidence reporting on the presence and consequences of gender bias effects to achieve agreement among key actors in the science system on where improvements and actions are needed to ensure excellence in science. Since 2011, there have been 22 Gender Summit events around the globe, focused on five regions: Europe, North America, Latin America and the Caribbean, Asia Pacific, and Africa, with nearly 2000 expert speakers and more than 11,000 participants. The next Gender Summit in the series will be GS23-Africa, which will apply the gender lens to energy transition and to advancing a vision of equal, just and fair Green New Deal in Africa. It will take place in hybrid form on 27-28 April and 4-5 May 2023 and will be officially hosted by Ghana. The conveners are Portia and The African Institute of Mathematical Sciences. GS23 welcomes science institutions from across Africa to join as the summit's partners. For more information please contact ep@portiaweb.org.uk