Some useful links, architecture related and otherwise:

www.pushbuffalo.org
People United for Sustainable Housing: a great local non-profit that is changing the face of Buffalo's Lower West Side.

www.bnge.org
Buffalo Niagara Green Expo: this group puts together a yearly showcase for WNY businesses and organizations that specialize in green/sustainable products and services.

www.usgbc.org
US Green Building Council: the group leading the push for green/sustainable construction in America. Responsible for the LEED (Leadership in Energy and Environmental Design) Building Evaluation Systems.

www.greensource.construction.com
The on-line edition of the journal of the US Green Building Council.

www.earth911.com 
This site contains the latest information on recycling, Including a tool to locate recycling centers/events in your area.

www.dsireusa.org
DSIRE is a comprehensive source of information on state, local, utility and federal incentives and policies that promote renewable energy and energy efficiency.

www.forgottenbuffalo.com
An Urban Explorer's Guide to the Buffalo-Niagara Region: Unique Landmarks, Historic Gin Mills, Old World Neighborhoods, History, Nickel City Oddities, Tours and More!  Run by Buffalo's own Airborne Eddy Dobosiewicz, aka "Maxwell Smart" and local historian Martin Biniasz.