Scientists are more certain than ever that human activities are significantly affecting climate across the world, says the Intergovernmental Panel on Climate Change in its first assessment of the evidence since 2007. That conclusion may surprise some people, following a well publicised series of setbacks over the past few years for those who believe that the battle against global warming should be near the top of the international political and economic agenda.
聯合國政府間氣候變化專門委員會(Intergovernmental Panel on Climate Change，IPCC)在自2007年以來的首份證據評估報告中表示，科學家們現在比以往任何時候都更確信人類活動嚴重影響了全球氣候。這一結論可能會讓一些人感到意外，而過去幾年那些認爲應對全球變暖應提至國際政治和經濟議程前列的人，遭遇了一系列備受矚目的挫折。
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