Here’s a rather impressive bit of reflection by Adam Sacks on “the fallacy of climate activism” http://www.grist.org/article/2009-08-23-the-fallacy-of-climate-activism.
He says: “in the 20 years since we climate activists began our work in earnest, the state of the climate has become dramatically worse, and the change is accelerating–this despite all of our best efforts. Clearly something is deeply wrong with this picture. What is it that we do not yet know? What do we have to think and do differently to arrive at urgently different outcomes? The answers lie not with science, but with culture.”