The Canada Green Building Council – http://www.cagbc.ca
The Canada Green Building Council (CaGBC) accelerates the design and construction of green buildings in Canada. The Council is a broad-based inclusive coalition of representatives from different segments of the design and building industry.
U.S. Green Building Council – http://www.usgbc.org
The US Green Building Council (USGBC) is the nation's foremost coalition of leaders from across the building industry working to promote buildings that are environmentally responsible, profitable and healthy places to live and work.
Union of Concerned Scientists – http://go.ucsusa.org/game/
The Great Green Web Game. This game tests your knowledge of how consumer choices affect the environment. As you answer questions and 'shop green' the Envirometer gauges the cumulative impact of your choices
Earth Day Network – http://www.earthday.net/Footprint/index.asp
Ever wondered how much "nature" your lifestyle requires? This Ecological Footprint Quiz estimates how much productive land and water you need to support what you use and what you discard. After answering 15 easy questions you'll be able to compare your Ecological Footprint to what other people use and to what is available on this planet.