Ratunku Gabriel Lekalakala is Head of Directorate, and a Specialist Scientist responsible for climate change analysis, at the Department of Water and Sanitation. Also a council member of the South African Hydrological Society, and Chairperson of the Adaptation Network Steering Committee, Ratunku has extensive experience in research and science for policy and development, gained from years of working in various public sectors, including the Parliament of the Republic of South Africa. His research and development areas of interest are in climate change, climate-related risk and mitigation, prevention and response, and the use of systems approaches for addressing complex problems.