If you are interested to keep track of the legal and policy developments in environmental law, I strongly recommend Legal Planet: The Environmental Law & Policy Blog. This blog is a colloboration between the Law Schools of UC Berkeley and UCLA. Here is the blog's official description:
Legal Planet, a collaboration between UC Berkeley School of Law and UCLA School of Law, provides insight and analysis on energy and environmental law and policy. The blog draws upon the individual research strengths and vast expertise of the law schools’ legal scholars and think tanks. Our goal is to fill a unique space on the blogosphere, not only by bridging the worlds of law and policy, but also by translating the latest developments in a way that’s understandable to a mass audience. We write about Supreme Court decisions, regulatory actions, and state and national legislation that affects water resource management, toxic waste disposal, renewable energy, air quality, land use, and more. The global challenge of climate change is the driver behind our work.