Embed environmental issues throughout the education curriculum.
Centre for Alternative Technology: provides information on environmental issues for school curriculums and Higher Education courses
The National Association for Environmental Education: supports and promotes teaching and learning about the environment in the formal education sector. See their Guide on Opportunities for Environmental Education across the National Curriculum for England: Early Years Foundation Stage and Primary
10:10 is an organisation which runs The Solar Schools project where UK schools set a fundraising target for their very own solar roof, then everyone chips in to help make it happen.