This edited volume explores the role of outdoor environmental education in the contemporary society. It identifies some of the opportunities and challenges of this educational area, particularly in the growing digitalization of the contemporary society and the distancing between people and nature. Furthermore, it seeks to answer why outdoor environmental education is essential for developing students’ environmental citizenship competencies or developing their relationship with nature. The book also introduces the various approaches existing in the field, discusses their relevance, and highlights their unique features. The book finishes with an overview of the practice of outdoor environmental education in selected countries from North America, Europe, and Asia.