It is sad indeed to realize that politics and entrenched financial interests dominate science - or what passes for it- but the notion that global warming denial is just triggered by oil companies and the like is naïve. There are powerful interests on the other side - and, in addition, because of regulatory perversions, even oil companies can come to embrace global warming as a deceptive means to beat down competitors or draw benefits from the public trough.
Don't laugh. Tobacco companies have done a very good job of this sort of shenanigans.
