Butterflies are perhaps the world's most beloved insects. But beneath their colorful charm, there's a wealth of hidden scientific secrets that show butterflies to be smarter and more resilient than we ever imagined. Producer: Laurie Cahalane, Serge Guez. Narrator: Jeannette Robinson. Authors: Marie Blanc-Hermeline, Pierre Bressiant, Jerome-Cecil Auffret, Arnaud Devroute, Maxence Lamoureux