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I sometimes wonder what Saudi Arabia is going to do when oil riches dry up. It seems they are only allies because their economic interests force them to mostly (9-11 aside) play nice with the rest of the world.
When humanity develops cheap and plentiful non-fossil fueled energy, they will be in a world of hurt.
With regards to the warming, I would expect water to cycle more, meaning more total global rain. I would also expect this to have a net greening effect, though it seems climate research is myopically focused on the locations where deserts will expand. I'm confused as to how we should worry about a drying planet when it's going to cycle 7% more fresh water.
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