http://www.earthday.net/earthday2010
“A Billion Acts of Green” is the campaign slogan for Earth Day 2010. Click on Programs and Education to find over 300 standards-based lesson plans, school greening tips, grants for teachers, and links to more than 25,000 teachers. Go to Resources for materials such as environmental fact sheets and an ecological footprint calculator that help build a cleaner, healthier, and safer world.