Cyril Dion is a French writer, film director, poet and activist. After studying at the École d’art dramatique Jean-Périmony (drama school), he coordinated projects for the “Fondation Hommes de Parole”. In 2007, he co-founded the ecological movement Colibris (hummingbird), being director until July 2013. In 2010, he was advisor and co-producer with Colibris of the movie “Think global act Local” by Coline Serreau. In 2012, he co-founded Kaizen magazine, and was editor in chief until April 2014. He is also editor in chief of the “Domaine du Possible” collection of the French publisher Actes Sud. He is one of the leading figures in the French climate movement that is organising Climate Marches since 2018. In 2018, he took part in the action L’Affaire du Siècle, launched by four NGOs with the common goal: take the French State to court for not acting on climate change.