by Xinhua writer Peng Peigen BAKU, Nov. 23 (Xinhua) -- On the final bus shuttling from a UN climate conference site to the nearest metro station late Friday night, a group of volunteers in light-green uniforms burst into jubilant songs and enthusiastic cheers celebrating the conclusion of their two-week work. However, for global climate negotiators gathering in Baku, Azerbaijan for the 29th session of the Conference of the Parties to the United Nations Framework Convention on Climate Change (COP29), there i ...