DK posted this superb episode of the Penn & Teller show "Bullshit". I don't know where he gets them from but an earlier one on smoking was also excellent and I want to see more.
This isn't the entire environmental movement, there are decent and informed people out there, but it does characterise well the ignorance, hysteria and mixed objectives of far too many - quite possibly a majority - within the green camp. Those who use the environmental movement as a new rationale for old socialist dogma; the eco-socialists. Those who mean well but sign up to campaigns without really knowing the issues. Those who, if not properly challenged, will try to pass extreme possibilities off as well established facts.