Try these discussion boards first:
(Lots of architects here; there is discussion there about stock plans, building materials, and just about everything else)
(Look under "Community")
The AIA: http://www2.aia.org/myaia/communities/c ... nityID=200
(Odd address, but that's what came up; search for "green" items).
http://www.concretenetwork.com/concrete ... index.html
(I haven't looked this over much, but it came up in a search from the EWG Web site, which also offers some information: http://www.ewg.org/
Beyond those, search the Web for green architecture, green building, sustainable building, etc. There's a lot of stuff on the Web, both commercial and residential.
There is a fair amount of discussion about whether concrete is green, due to the energy needed to produce it and, for those that live in kiln havens like Dallas County, the air pollution involved. Personally, I think that solid construction forms, like steel and concrete, fall into the green category for the simple fact that they don't loosen (at least not nearly as much) as wood frame construction does. The average (i.e., poorly built) new wood frame house quickly becomes an energy-wasting sieve as the joints loosen in a surprisingly short time. We can keep the bugs from entering the loosened joints with boric acid treatments during the construction process, but it's nearly impossible to retain the heating/cooling energy in a loose-jointed stick-built home. If you're thinking about green heating and cooling, like solar and wind, maintaining joint integrity becomes even more important.
As an aside, I think hiring a good architect (landscape architects included) saves more than it costs, especially if you plan to live in the home for awhile. I don't believe there's any substitute for a good architect whose thinking is in line with the owner's wants/needs.