A movie presenting the Schools Endeavour “Naturae cognoscere causas” by Bartłomiej Nowodworski I High School in Kraków, Mikołaj Rej XI High School in Warsaw, and “Strumienie” High School in Józefów, carried out within the third stage of the European Research Council (ERC) Consolidator Grant Project “Our Mythical Childhood” (681202): “Our Mythical Nature. The Classics and Environmental Issues in Children’s and Young Adults’ Culture”, and within the activities of The Cluster The Past for the Present: International Research and Educational Programme, Faculty of “Artes Liberales”, University of Warsaw, 2021. More information at the project Website http://www.omc.obta.al.uw.edu.pl/ and Our Mythical School Ventures: http://omc.obta.al.uw.edu.pl/ventures