Deputy Director General and Scientific Director of the French Geological Survey BRGM. He is in charge of defining and implementing the overall scientific strategy of BRGM in the field of water and global warming, critical raw materials and circular economy, natural and technological risks, the development of geological knowledge and associated numerical data and services. He is also for 2023 and 2024 the Elected president of EuroGeoSurveys, association of the European National Geological Surveys. Before joining BRGM, Christophe Poinssot worked for 25 years in the French Atomic and Alternative Energy Commission (CEA) where he held several management positions in the field of R&D. From 2008 to 2018, he directed the CEA research department in charge of developing the recycling technologies of nuclear fuels, before being from 2018 to 2020, the Nuclear Counsellor at the French Embassy in China (Beijing) and the CEA Representative in this country. At CEA, he developed a recognized expertise in environmental and nuclear chemistry. He authored over 60 papers in international journals (impact factor >28), over 120 oral presentations in international conferences, and has been teaching in many universities and engineering school. His work in the 2010’s on the environmental footprint and the sustainability of nuclear energy, was awarded in 2017 by the Roger Van Geen Prize from the Foundation for Scientific Research (Belgium). He is decorated as Officer of the Palmes Académiques since 2017. Christophe Poinssot is a former student from the École Normale Supérieure of Paris where he graduated in Earth Sciences and Materials Science. He got his Ph.D in Materials Science in 1997 from the Paris University, an HDR (Habilitation to Manage Research) in 2007 in Chemistry from the Saclay University, and was awarded from the Institute of National Defense Studies (IHEDN) in 2023.