Associated Press: Pulling a worn, yellowed copy of the 1992 U.N. climate change convention from her handbag, Farhana Yamin points to the paragraph that states its goal: To stabilize greenhouse gas concentrations at a level that would prevent dangerous warming. It doesn't provide any guidance on how to do that. But Yamin does. And, in a historic first, dozens of governments now embrace her prescription. The global climate pact set for adoption in Paris next year should phase out greenhouse gas emissions by 2050,...