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Sébastien Treyer is the Executive Director of IDDRI, the Institute for Sustainable Development and International Relations, a Paris based think tank working on international governance of climate, biodiversity, ocean and sustainability. He is a graduate from Ecole Polytechnique and AgroParisTech, and holds a PhD in environment management. He is a specialist in foresight for public policies and international negotiations on sustainable development. A civil servant of the French ministries of Agriculture and Environment, he has been in charge of foresight at the French ministry for the Environment, and has also coordinated the Agrimonde Foresight exercise (How to feed the world in 2050?), before joining IDDRI as Director of programmes in 2010.

He has played an active role at the interface between science and policy and in scientific programming for the European Commission, the French National Research Agency as well as for regional scale administrations such as the Seine Normandy Water Agency. He is scientific co-coordinator of the master specialty Environment, energy and sustainability at the School of Public Affairs, Sciences Po, Paris. He is currently Chairman of the Scientific and Technical Committee of the French Global Environment Facility (FFEM) and a member of the Lead Faculty of the Earth System Governance Network.


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