The Nation has consistently covered the environmental movement with a critical eye, which I consistently support. These groups' danger lies in the fact that they are seen as inherently harmless and out to serve the public interest.
This article, however, was not fair to the mainstream environmental groups it criticizes, which weakens its credibility. As far as I can tell, only the Sierra Club was asked to comment, and they declined. There are so many of these environmental groups--surely one of them would have been willing to release a statement or answer the reporter's questions?