The fall issue of Ecological Home Ideas has a great feature on Green Communities, including Atlantic Station in Atlanta which clusters affordable homes around businesses in downtown Atlanta close to dining, shopping and parks. Hope it helps to reduce Atlanta's hideous traffic problems. Rhapsody Cove near Kankakee promises prairie restoration and wetlands protection, but it's still way the heck out of town forcing people to drive just to buy groceries. Sanctuary Place in Chicago, designed by Farr Associates, is an affordable housing complex for formerly homeless women that uses passive solar design and insulated concrete forms to keep the building snug even in cold Chicago winters. "ICFs are hollow blocks, usually made of foam, stacked into walls that are then reinforced with steel rebar and filled with concrete. The result is a highly durable, energy efficient wall..." Tribeca Green in NYC also used concrete walls to help win LEED Silver status.