Bhargabi Bharadwaj is a research associate in the Environment and Society Centre at Chatham House, where she has led research on transboundary water governance and bolstering food system preparedness in crisis contexts. Her work seeks to bridge high-level policy and on-the-ground implementation capacity, with a strong emphasis on natural resource governance. Bhargabi is the co-host of The Climate Briefing, a podcast by Chatham House, where she interviews global leaders and experts on the intersection of geopolitics and international climate politics. She also serves as an Intergovernmental Panel on Climate Change (IPCC) Chapter Scientist for Working Group III.
Previously, Bhargabi worked with the UK’s Climate Change Committee (CCC), where she led and contributed to the 2023 Statutory Progress Reports to Parliament and Devolved Administrations. Her international experience includes a tenure with the UN in the Democratic People’s Republic of Korea, managing humanitarian and development framework coordination. She holds an LLM in Public International Law from the London School of Economics and Political Science, as well as a Bachelor of Laws from the University of Kent.
Ruth E. Mathews is a senior water governance specialist and thought leader in water footprint assessment, value chain water risks, cross-sector governance and water stewardship. Her work focuses on strengthening coordination across public, private and civil society actors, and on developing practical methods and guidance that enable organizations to address trade-offs and systemic risks. As founder and principal of Currents Converge, she supports governments, companies and civil society in advancing holistic governance across sectors and ecosystems.
Ruth previously served as executive director of the Water Footprint Network, where she led global efforts to operationalize water footprint assessment. She also directed the Source-to-Sea Programme at the Stockholm International Water Institute, and has held leadership roles with WWF and The Nature Conservancy. She has implemented projects and capacity-development initiatives globally.
Dr Jack Barrie is an independent global adviser and researcher specializing in the circular economy, with over 15 years’ experience working at the intersection of policy, international trade and material value chains. He most recently led the Global Materials Collaboration at the World Economic Forum, developing scenarios for international cooperation on materials and circularity to support economic resilience, climate action and nature-positive outcomes.
Jack has held several global advisory roles, including as a member of the UK Government Circular Economy Task Force, a specialist adviser to the UN Economic Commission for Europe on ESG traceability of sustainable value chains in the circular economy, a member of the World Business Council for Sustainable Development’s Global Circularity Protocol, and a member of the TESS expert group on circular economy and trade. He holds a PhD in circular economy innovation policy (University of Strathclyde), along with degrees from the University of Cambridge, the University of Edinburgh and Aalborg University.