The platform for this blog limits the number of links that we can list in the left margin.  Here are some blogs that cover environmental issues in a significant way:

SF Green — the San Francisco Chronicle’s blog on environmental and energy issues in the Bay Area.

RealClimate — an excellent source for reliable information on climate science.

Center for Progressive Reform — the environmentalist viewpoint on regulatory issues.

In addition, some of the leading legal blogs provide contrasting viewpoints on environmental issues from time to time:

The Volokh Conspiracy — the conservative/libertarian perspective.

Balkinization — the liberal counter to Volokh.