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Webinaire : « Agir pour la transition écologique au sein de sa collectivité » -15 février

Ce 15 février, ne manquez pas le webinaire « Agir pour la transition écologique au sein de sa collectivité » organisé par Alumni for the Planet, l’Association des anciens élèves de l’ENA, Ponts Alumni et SciencesPo Alumni. 

Sébastien Maire, délégué général de France Ville Durable, et Tatiana Lecossais, ingénieure chargée de l’intégration de la transition écologique de la Métropole de Nantes, vous partageront leur expérience au sein des collectivités engagées pour la transition écologique.

Un webinaire pour vous inspirer et vous aider à agir en faveur du climat et de l’environnement dans votre collectivité. 

Le programme : 

Intervention de Sébastien Maire, autour de l’urgence de la transition écologique et le rôle clé des collectivités.

Témoignage de Tatiana Lecossais qui racontera son expérience personnelle et montrera comment il est possible d’agir concrètement au sein de sa collectivité.

Gratuit sur inscription.


She holds a Master’s degree in Development Economics from the Panthéon-Sorbonne University and is currently studying for a Master’s degree in International Relations and Action Abroad at the same university. She approaches the problems of sustainable cities and territories through these different perspectives and her international experiences.


Isabelana is a Mexican journalist who holds a Master’s degree in Digital Communication and Data Analysis from the Sorbonne University. She previously worked in communication and press relations in the cultural sector in France and Mexico. Today, she is interested in ecological actions and solutions to preserve the environment and the biodiversity.


With a background in social sciences, art history and architecture, Camille has worked in communication within the VINCI group: from major international projects to La Fabrique de la Cité, a think tank dedicated to urban foresight.

A geographer by training (Saint Petersburg State University), she started as a geographer and economist at the Academy of Agricultural Economics (Russia), before pursuing her career in France as an administrative and accounting assistant (Air Liquide, Association TGV Provence Côte d’Azur, COFHUAT, Groupe Hervé)

Trained in international and European affairs between England and France as part of a double degree at Sciences-Po Lille / University of Kent, Marion started her career in advocacy and institutional relations of non-governmental organisations, in the fair trade sector (Max Havelaar France label). Her experiences are also linked to territories, with a passage in decentralised cooperation at the level of a departmental council.


Before joining the SCbF team, he held several positions in local government management. From elected official and deputy mayor of his native city Besançon, in charge of university relations and international cooperation, to Director of Economic Development of the City of Pantin, to Chief of staff in Montreuil – where he notably piloted the in-depth redesign of the urban project towards more ecology and sustainable development – he continued his career as Senior Resilience Officer of the City of Paris.

He promotes a holistic and systemic vision of sustainable development and brings his expertise in territorial resilience, ecological and social transition.