Jack Guichard is director of the Palais de la Découverte science museum in France. He is a biologist, university professor and specialist in pedagogy and communication of science. He is also the author of numerous non-fiction children's books on all kinds of subjects. Cécile Jugra studied modern literature at the Sorbonne University. She works as an independent editor and has published more than 50 titles. Laurent Simon is a graduate of the Emile Cohl school. He worked in advertising until 2011 when he ventured into the publishing world with his first book for young adults, illustrated by Marie Flusin.