This course provides an introduction to the theory and practice of education for environmental sustainability. It traces approaches from its origins in outdoor, experiential and environmental education to contemporary expressions as an interdisciplinary approach that explores relations between education and social, economic, cultural and environmental justice. The course seeks to attract students with an interest in education and the possibilities and shortcomings that associated policies and practices might offer/foreclose. It draws from selected readings and experiences in Las Nubes to explore ESF (Education for a Sustainable Future) as an open-question for examination within selected social-ecological contexts within Costa Rica and Canada.