Here are some noteworthy resources from the Summer Workshop at University of Chicago on Climate Change:
Chicago's Water Agenda 2003
Save the Source , City of Chicago water conservation leaflet
Plant a Rain Garden , City of Chicago leaflet
Guide to Rooftop Gardening , City of Chicago leaflet
Also, be sure to check out the new Google blog
"Climate change in our world", (Google LatLong blog) Google has teamed up with the British Government to create a couple of really interesting new environmental layers to Google Earth based on climate change estimates for the next century.