Back in 1994-1995, in Austin, I worked at a small web design company part time, during grad school. One of the guys who worked with us was Bill Christensen, who runs Sustainable Sources and Greenbuilder.com .
Bill always seemed like a real nice guy, but I was a busy grad student and didn’t really get to know him that well. I did find out, however, that he ran greenbuilder.com, or at least its predecessor.
Well, his sites are just really a motherload of information on any greenbuilding/sustainability issue that might interest you. So check them out.