Optimists cheer the departure of the Bush administration and assume that the arrival of the Obama presidency, which unlike its predecessor is not in denial about the science of global warming, will unlock the prospect of a deal. Pessimists note that our mounting economic woes around the world are being used as an excuse for inaction on cuts in carbon emissions.
各国应当在2009年签署全球气候变暖以及气候变化协议以取代和扩充京都议定书。会议将在哥本哈根举行。乐观主义者为布什政府的下台而庆贺，并且认为奥巴马总统上台将会大大扩大达成协议的可能。奥巴马政府与前任不同的是，他们并不否认全球变暖的科学依据。悲观主义者说，当今全世界经济危机严重，有人利用这一情况来为在减少二氧化碳排放上无所作为开脱。