Time Magazine: If you want to give a U.N. climate change negotiator indigestion, which isn’t terribly hard to do these days, mention three letters: W-T-O. That stands for the World Trade Organization, the global body charged with supervising and liberalizing international commerce – and a whopper of a cautionary tale. Back in November 2001, in Doha, Qatar, the WTO launched what is known as the Doha Development Round of negotiations, an effort to increase global trade by reducing trade barriers. Eight years …