The content originally appeared on: CNN Sharm el-Sheikh, Egypt CNN - Despite one major breakthrough on Saturday, international climate negotiations at the UN's COP27 climate summit are dragging on into early Sunday morning. The closing plenary of this year's COP is scheduled to start at 3 a.m. Egypt time, according to a notice from the United Nations Framework Convention on Climate Change. For the second year in a row, marathon negotiations continued well past their scheduled end, as countries attempted […]