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Hi Nat,
One of my friends is an expert in atmospheric physics, and he tells me that all the big computer models which have been developed to do long term modelling of the behaviour of the Earth's atmosphere show long-term warming trends. The only way in which the different models differ is how much warming there will be over the next century. Even a rise of a few degrees C could lead to radical spreads of desert areas, migration of huge numbers of people, war, etc.
It's absolutely a political issue and needs to be addressed by politicians - based on the best possible information from scientists, of course.
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