DAVOS, Switzerland, Jan. 22 (Xinhua) -- The United Nations (UN) chief on Wednesday issued a stark warning about the mounting challenges facing humanity, including the climate crisis and geopolitical ...

（法新社华盛顿23日电） 美国总统川普宣布美国将二度退出巴黎协定（Paris Agreement）后，亿万富豪彭博（Michael Bloomberg）今天宣布，他的基金会将接手资助联合国气候变化机构。 彭博出手意在确保联合国气候变化纲要公约（United Nations Framework Convention on Climate Change ...