Links to Resource Guides:

US Green Building Council http://www.usgbc.org/
The USGBC oversees the LEED program of sustainable building in the US.

Building Reuse Materials Association http://building-reuse.org/
This organization aids in the deconstruction of buildings and recovering used building materials for reuse and recycling.

Urban Growth Boundary in Portland, Oregon http://www.uoregon.edu/%7Epppm/landuse/UGB.html
This site talks about the urban growth boundary in Portland, Oregon. This idea has radically changed the city of Portland, and is curbing the suburban sprawl and encouraging density in the downtown area of the city.