The climate crowd is part of the liberal movement, and the liberal movement - because they aren't actually working all day - have plenty of time to position themselves and devise ways to control the dialogue. They learned long ago the importance of that.
Notice how people - even those who are skeptical - will start out their statement with 'I know climate change is important but I'm not sure we really need to...' In other words, the perception is that the core issue - climate change - is a given and all that's left is to parse the details and specifics.
In fact, the basic premise - that the Earth is falling apart due to man's misdeeds - is bullshit...or at least hardly 'proven fact'. Sure, there are plenty of scientists publishing books - but they are hardly impartial. And, for every scientist who believes in climate change there is one who doesn't. But, the ones who don't are typically silenced.
Lastly, look at the undeniable fact that history is laced with forecasts of doom, none of which ever seem to pass. Scientists, if evaluated scientifically, have a pretty poor track record.
