No tangerines for you? July 24, 2007 The politics of global warming got very concrete, and oddly difficult, In a meeting with local environmentalists in the coastal town of McClellanville today, where Elizabeth Edwards raised in passing the importance of relying on locally-grown fruit. "We've been moving back to 'buy local,'" Mrs. Edwards said, outlining a trade policy that "acknowledges the carbon footprint" of transporting fruit. "I live in North Carolina. I'll probably never eat a tangerine again," she said, speaking of a time when the fruit is reaches the price that it "needs" to be. Edwards had talked about...