It's also not true, at least not in any practial sense. In my own experience, those who "wish to be green" and are willing to use government to compell others to also do as they would wish are religious zealots, not scientists. They, as a rule, are impervious to new facts or data that may not have been available (or not widely available) at the time of their religious conversion. I'm no less committed to the environment than I ever have been, I've just come to the conclusion that most of the actions that are proposed by the Green movement are ineffective at best, and terriblely counterproductive otherwise. Even one of the founders of Greenpeace has done an about face concerning civil nuclear power, and nuclear power was one of the scientific issues that started me down my alternate path. I love watching "Stossel" on Fox Business Network each thursday, and this past one had a bit on the EPA that I agree with compeletly. Stossel (himself a well known former liberal turned libertarian) stated the issue well for myself, by saying that when the EPA was founded, there was much need for it, but since all of the low hanging fruit has been dealt with over the past 40 years, all remaining gains are economicly very costly and thus result in job losses. I also agree with his libertarian position that, although it's true that in a libertarian world the public could class action sue major industrial polluters, in practice our justice system is too screwed up for that to be a practial solution. Thus the EPA must continue to exist as a reflection of our society's collective desire to restrict pollution to the economicly necessary minimum possible but no further. My greatest complaint about the EPA is that they have no authority over the greatest pollutors within the USA, namely government institutions themselves (particularly the US Military), so further gains from federal actions cannot be expected.