Associated Press: Hundreds of investors controlling $20 trillion in capital were set to gather Thursday for talks on financial risks and opportunities from limiting carbon emissions that scientists blame for global warming. The gathering of 480 investors and other Wall Street types was organized by groups supporting U.N. efforts such as the U.N. Foundation, Ceres and the U.N. Fund for International Partnerships. Mindy Lubber, president of Ceres’ investor coalition, called it the largest meeting …