Reuters: The world’s biggest emitters of global-warming greenhouse gases met behind closed doors in Honolulu on Wednesday for a US-sponsored conference as protesters pointed up Hawaii’s vulnerability to climate change. In December, officials at climate talks in Bali, Indonesia, agreed to start two years of negotiations to seal a broader pact to fight global warming. As part of the meeting among nearly 200 nations, a range of other pressing issues to aid the developing world were …