Building Systems:

www.groundwater.org

http://fridge.arch.uwa.edu.au/courses/480/projects/rammed_earth/hot%20links.html
(Rammed Earth)

http://www.skillful-means.com/indexfra.htm
(straw bail)

Building Products:

http://www.akagreen.com/

http://www.greenbuilder.com/sourcebook/

http://www.biggreen.org/

http://archrecord.construction.com/GREEN/GREEN.ASP

http://www.buildinggreen.com/products/productslist.html

http://www.oikos.com/

http://data.oikos.com/products/

Building Product Databases and Comparative Tools:

http://notes.erg.com/eppstand2.nsf/Pages/DisplayAisle.html?Open&Hardware%20Store&Building%20materials

www.epa.gov/oppt/epp

http://www.bfrl.nist.gov/oae/software/bees/manual.pdf

(use BEES and EPP database from this site)

Energy:

http://www.azsolarcenter.com/

http://www.hydrogenus.com/

http://www.nrel.gov/wind/

http://www.eren.doe.gov/windpoweringamerica/

http://www.natwindpower.co.uk/

City Programs:

http://www.ec.gc.ca/envhome.html

http://www.tucsonmec.org/

http://www.greenbuilder.com/sourcebook/

http://www.dep.state.pa.us/business_industry/default.htm

http://www.ci.scottsdale.az.us/greenbuilding/

http://www.ec.gc.ca/envhome.html

LEED:
http://www.usgbc.org/

WATER HARVESTING:
http://www.aquafloinc.com/