PORT MORESBY Papua New Guinea has declared a boycott of next month's U.N. climate summit, branding the global warming negotiations a "waste of time" full of empty promises from big polluters. While plenty have criticized the annual COP summit in the past, it is rare for any government to so totally dismiss the U.N.'s premier climate talks. "There's no point going if we are falling asleep because of jet lag because we're not getting anything done," Foreign Minister Justin Tkatchenko told AFP