Prof. Maria Ivanova and Prof. Roberto Sánchez Rodríguez were selected from over 130 excellent applications to join the World Climate Research Programme Joint Scientific Committee. Their appointments reflect the move toward integration of social science in the work of the World Climate Research Programme. WCRP is a leading institution in addressing frontier scientific questions related to the coupled climate system — questions that are too large and too complex to be tackled by a single nation, agency or scientific discipline. Through international science coordination and partnerships, WCRP contributes to advancing our understanding of the multi-scale dynamic interactions between natural and social systems that affect climate. WCRP-supported research provides the climate science that underpins the United Nations Framework Convention on Climate Change, including national commitments under the Paris Agreement of 2015, and contributes to the knowledge that supports the 2030 Agenda for Sustainable Development, the Sendai Framework for Disaster Risk Reduction, and multilateral environmental conventions.