The scientists’ analysis comes only a month after nearly 200 governments struck a new climate agreement in Paris that aims to stop global temperatures from rising more than 2C from pre-industrial levels, and ideally limit warming to 1.5C.
Nova School of Business and Economics consolidated last year’s strong performance by climbing a further 14 places to 17.
不包括阿拉斯加和夏威夷在内的美国本土曾在2012年创下温度记录，那年发生过灼人的热浪和干旱。主要是由于东部地区不同寻常地寒冷，才使得2014年的温度对这48个州来说，仅在有记录以来的最暖年度中排名第34。