San Francisco, California's official government Web site contains the SF Environment page. Their mission is to improve, enhance, and preserve the environment and to promote San Francisco's long-term environmental well-being. Not only a great source of facts for San Franciscans, the site also offers some interesting resources for others seeking environmental information on recycling, green building, energy issues, toxics reduction, transportation and clean air, and more. The green building page, for example, contains well designed and informative fact sheets on the elements of building green, worker productivity, PVC alternatives, green building tools, and green building links.