Dr. Charlotte Halpern is a tenured FNSP researcher at Sciences Po's Centre for European Studies and Comparative Politics (CEE) in Paris. She is Co-director of the Environmental Policies Research Group at LIEPP and Director of the Institute for Environmental Transformations (IPTE). Her research spans public policy, urban sociology, environmental governance, and European Union politics. She teaches public policy analysis and urban governance at Sciences Po and AgroParisTech. Her research interests focus on public action, urban governance, environmental and transport policy, social movements, and participatory democracy. She investigates how policy instruments are selected and combined across different political systems, particularly in France, Germany, the UK, and the EU. Her work emphasizes the role of non-hierarchical governance, state restructuring, and the political regulation of urban utilities. She is particularly known for her studies on the 'Grenelle de l’environnement', metropolitan water governance, and sustainable urban mobility. The analysis of her recent publications reveals a consistent focus on environmental policy innovation, urban sustainability, and comparative governance. Her work bridges political science with urban planning and environmental studies, often employing comparative case studies across Europe, Latin America, and Southeast Asia. Key trends include the evaluation of participatory processes, the governance of decentralized utilities, and the long-term evolution of transport policies in major cities. She has received research funding from prestigious sources including the European Commission (Horizon 2020), the French National Research Agency (ANR), and the French Ministry of the Environment. Her major projects include CREATE (Congestion Reduction in Europe), MEGOWAS (Metropolitan Governance of Water Systems), and SYRACUSE (sustainable urban utilities). CREATE Project (2015–2018): European-funded project on urban congestion and sustainable mobility. MEGOWAS Project (2017–2018): USPC-NUS joint project on water governance in Manila, Jakarta, Lima, and São Paulo. SYRACUSE Project (2012–2016): ANR-funded project on technological and institutional innovations in urban utilities. Grenelle de l’environnement Study (2009–2012): Analysis of France’s national environmental consultation process. Policy Instruments Project (2005–2008): Comparative study of governance modes in EU environmental and urban policy. Dr. Halpern has conducted research stays at Nuffield College (Oxford), the Max-Planck Institute for the Study of Society (Cologne), and Humboldt University (Berlin). She is an associate researcher at the Public Policy Research Group at PUCP, Lima, and contributed to the creation of the Observatorio de políticas públicas para la ciudad. She has also been an invited lecturer at PUCP. Her interdisciplinary collaborations involve engineers, social scientists, and policymakers, particularly through projects integrating social and technical expertise in urban sustainability.