Global Warming

[NoamChomsky]

For years I have just assumed it is true. This is in part due to my natural sympathies to the left, partly due to my general concern that humanity will destroy the Earth (which when you get down to it is really all that matters to us, survival) and partly due to the fact that I hear of many imminent scientists supporting this idea. I have never looked at the proof or disproof of global warming in any detail.

Where, for both sides of the issue, should I start to look?