There are lots of professional associations for architecture and related professions. If you don't find one of interest here, contact a librarian to help find one on a specific topic of interest to you.
Professional associations may include free information and some information requiring membership. In general, you may find information about:
Below are a few US and international organizations who produce information about sustainable building.
In addition to searching library databases for articles on particular topics, you may also wish to keep up-to-date using free online periodicals like these.