I can't grasp the main driving force behind believing or not in global warming/or is it man made, etc, being the fact that it is convenient to any of the political sides in debate. The driving force behind any investigation can't be the need to justify or not some a priori position. That's the first step to a biased conclusion, even with the same data. Politics can't come before science. Politics should deal with the facts, not try and make them, unfortunetely that isn't happening... It's been that way for a long time mind you, galileu had th same kind of problem...
But to make a point, the question of global warming (witch is happening, and it's not just the average temp rising, besides that we can see an increase in seasoned relative air humidity in the equatorial line, with an extension of the dry/tropical areas towards the poles, variations in the salinity of diferent areas in the sea, etc) is going on for decades... first signs of accelerated global warming can be traced back to the mids of industrial revolution, (coal is a lot more CO2 rich than petroleum) so thats a pointer, but of course the human factor isn't the only. I've never heard any serious cientist not taking into account the variations in solar atmosphere, has was told above by someone, that's probably, in conection with geothermal activity, one pof the great variables in play, always were.
But it really pisses me of when people try to deny or exagerate facts just because it's convenient to them
I'd rather start working on real facts than with beliefs and hopes and similar shaits...