From the Department of Energy's Center of Excellence for Sustainable Development, this Green Buildings site serves as a detailed metapage for environmentally conscious architects, engineers, and builders. As the introduction to the site points out, "The design, construction, and maintenance of buildings has a tremendous impact on our environment and our natural resources." The site offers carefully summarized links to relevant Websites and publications on topics such as building principles, building programs, rating systems, affordable housing, codes/ordinances, educational materials, and more. This site may be of interest to those who want practical applications for protecting the environment.