Dome sculpture in Paris, France.

一个公平、高效、可行的气候协定

坎布里奇—我们应该如何评估在本月的联合国气候变化巴黎大会上所达成的协定?12月12日,协议一宣布,这一争论便应运而生。

一些热情的环保主义者对协定感到失望,因为它没有坚决要求将2050年全球变暖幅度限制在前工业化水平以上1.5℃以内。

但这一承诺未必可信。巴黎所达成的成果其实比这一承诺要好,因为谈判者能够在迈向正确方向的实践步骤上取得一致。个体国家承诺在短期限制排放量,并规定了未来监督和定期评估目标。这比制定遥远的崇高的目标而不不顾实现可能要好得多。重要的是,气候协定启动了。

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