| http://www.w3.org/ns/prov#value | - gas prices begin to make Phoenix and other sun-baked, sprawling cities less attractive, the American population will begin to shift north.If that happens, the population center will move north as well. ???When it starts moving north,??? Coolidge told me, ???that???ll really be some kind of tipping point.???The latest edition of the center???s newsletter, the Lay of the Land, recounts the trailer?
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