U.N. says by the year 2000, nations will be wiped off the face of the Earth due to Global Warming

It's not hard at all. Less tree ring gap, less growth, less water, more drought, higher temps.

 

I didn't say I don't know how it works. I was saying how can you tell to within a fraction of a degree. Could a scientist tell me what the average temperature was in 1993 by looking at tree rings to within 1/10th of a degree. I'd love to see him try.

 

But there is a consensus, and thats really all that matters.