Agence France-Presse: Environment ministers from the world’s richest nations and a clutch of fast-growing economies began talks here Saturday to try to bridge their differences on how to tackle global warming. Japan, home to the landmark Kyoto Protocol, hopes to use the three days of meetings to shape the course of negotiations on a new climate treaty on curbing global warming, eyeing a breakthrough when it hosts the July 7-9 G8 summit. “This G8 environment meeting is not a place to …