Dr. Charlotte Halpern holds a PhD in political science and is FNSP Senior researcher (full tenure) at Sciences Po, Centre for European studies and comparative politics (CEE), CNRS, France. Her work focuses on state restructuring, comparative environmental policies and governance, and sustainable cities. She has published articles and co-edited special issues in Comparative European Politics; West European Politics; Politique européenne; Gouvernement et action publique. She has co-edited Policy analysis in France (Policy press, 2018 with P. Hassenteufel and P. Zittoun) and Policy instrumentation (Edward Elgar, 2026, with P. Lascoumes and P. Le Galès). She is an elected member of IPPA's executive board (International public policy association).