Reuters: Japan hopes rich nation leaders will agree a goal for mid-century cuts in greenhouse gas emissions and a target year when they should peak, at a key summit it hosts this year, a senior official said on Thursday. Koji Tsuruoka, Director General for Global Issues at Japan’s Foreign Ministry, said climate change would be a central issue at the Group of Eight (G8) gathering in the northern island of Hokkaido in July, with national emissions targets and funding to help fight warming and …