Agence France-Presse: Environment ministers from 16 leading economies have been arguing over how to “raise ambitions” for creating a green future, a top UN delegate to the talks said Friday. Describing the three days of Group of Eight-led talks as “among the most frank” involving the world’s top polluters, UNEP chief Achim Steiner said “there’s an impasse on how to move forward and raise the level of ambition.” “Syracuse is a moment in time where the discussion has turned to the question, ‘Is the …