But for those seeking the power to oppress humanity, any change in nature effected by humans, no matter how beneficial, is criminal by assumption. Thus all anthropogenic CO2 releases must be harmful to nature, by definition. Furthermore, since all human activity must, perforce, release CO2, all human existence partakes of crime against nature. Therefore nothing we can do is right, and controllers must be empowered to make sure we do as little as possible. Such is the case for the EPA.
via Carbon Emissions Are Good – Robert Zubrin – National Review Online.