Ice cores. Yes what a waste of time trying to look into what the air was like hundreds of thousands of years ago.
And as for the link from channel four, note that clouds are referred to as having a cooling effect, while that one works both ways, as well as what Dowding referred to, water moisture in the air is a greenhouse gas, which is the core of the theory from the camp that is scared about that acceleration of heat.
Volcanoes are referred to as heating, while their immediate impact is cooling.
It's all sort of complicated, and I'll try to find that link I mentioned. (it's on a weather man's blogsite, - his main hobby being the weather).
But meanwhile, my hat goes off for what EagleDNY promoted. Brazil and others that keep up to the same business are a huge part of the whole equation. (Mind you, there is only 1 continent on the globe where forests are in the whole, growing). It will still bring us cheaper coffee and burgers, so Drediock has a good point.
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