Here is the home page of the Nature Conservancy. One can sign up for their free e-newsletter. Here is the latest issue. There is a blog, with links to many conservation-related blogs. There are podcasts, short articles, photos and volunteer opportunities, etc.
To read about the Green Chemistry Program at the EPA, click here. The ACS (American Chemical Society) is an active partner. Check out their Green Chemistry links. The RSC (Royal Society of Chemistry) also has green chemistry links and publishes the key journal, Green Chemistry. Princeton University Library subscribes to this journal.
To subscribe to the Green Chemistry Program electronic newsletter, send a blank email to firstname.lastname@example.org with the subject line: subscribe green_chemistry FirstName LastName