As the description of their site says:

TreeHugger is a fast-growing web magazine, dedicated to everything that has a modern aesthetic yet is environmentally responsible. Our goal is to make sustainability mainstream and to be the one-stop for the environment. If you want doom & gloom, this is not the place. We are looking for solutions, constructive developments and positive initiatives.

They also have a job with categories of jobs listed as green or not green, should you wish to guide your career in a greener line.

Its worth taking a look every so often, or subscribe to their feed.