To help Francis Hallé in his fight to save the last tropical forests, a documentary filmmaker with a passion for nature decides to make his first film: "The Botanist", an ecological thriller with Leonardo DiCaprio. He traces his path with … Francis Hallé, Nicolas Hulot, Antoine de Maximy, Jacques Perrin, Claude Lelouch, Juliette Binoche, Thierry Frémaux Added on Amazon Prime 2023-07-14.