A graduate from Sciences po Paris in 2003, Marion Cohen worked for nearly 15 years in environmental NGOs, including ten years as scientific and technical director of the Nicolas Hulot Foundation. In 2017, she founded the company MC Conseil in order to support organisations driving the ecological transition both in terms of organisation and expertise. Among her clients: the Energy and Prosperity Chair, the Nicolas Hulot Foundation, the Brussels-based NGO Finance Watch, the Carbone 4 company. Marion Cohen has written numerous reports on ecological and economic issues.