(FILES) This file photo taken on October 6, 2015 shows French environmental activist and special envoy of French president for the protection of the planet Nicolas Hulot posing with his new book "Osons : Plaidoyer d'un homme libre" in Paris. Nicolas Hulot was appointed Minister of the Ecological and Social Transition on May 17, 2017. / AFP PHOTO / KENZO TRIBOUILLARD