Green Education Foundation (GEF) is a non-profit organization committed to creating a sustainable future through education. Sustainability education provides educators with the real-world applied learning models that connect science, technology, and math education with the broader human concerns of environmental, economic, and social systems. GEF provides curriculum and resources to K-12 students and teachers worldwide with the goal of challenging them to think holistically and critically about global environmental concerns and solutions.

http://www.greeneducationfoundation.org/