Dr. R. Ajayakumar Varma is currently a Senior Scientist in Environmental Sciences division at the Centre for Earth Science Studies (CESS) located in Akkulam, Thiruvananthapuram. Dr. Varma has held many senior leadership positions during his career and has chaired several committees constituted by the central and state governments on water, sanitation and environment related aspects as well as served in the Board of Studies of various universities. He has also been a resource person to the Kerala State Planning Board in the sectors of environment, water management and sanitation, and also to the Local Self Government Department on green management and sustainable development. He has implemented many research and consultancy projects and policy related studies funded by international, national and state agencies. He has also authored numerous research papers, technical reports and six books. Doctorate in Geology from Kerala University, he is a certified auditor of Environmental Management System.