This resource is for anyone working with young people in grades 9-12, whether in schools or in non-formal educational settings. Richly illustrated, it offers 50 teaching strategies that promote learning about natural systems and foster critical thinking about environmental issues, both local and global. It contains strategies for greening individual subjects, profiles of integrated learning programs and activities such as ecological footprint calculations. To help green school campuses, several articles describe how green technologies, like biodiesel fuels and water-cleaning systems, can be employed. Tim Grant and Gail Littlejohn are the editors of Green Teacher magazine, North America's award-winning environmental teaching resource.