We talk all the time about sustainability for product and industrial design, but it's less common to hear of the shifts that might benefit the graphic design community in moving towards more environmentally sound practices. In answer to the low level of activity on this front, a site called Renourish has sprung up to provide education, resources and tools for graphic design professionals. The site includes a brief primer on sustainability and indicates "take-aways" for designers to use with clients and coworkers. It also features a case study section where you can read about successful executions of more sustainable graphic design projects, as well as upload and share your own.
Here's another review of the site: