Global warming ice caps melting Mario Tama / Getty Images

关于气候变化的激进现实主义

柏林—顾名思义,主流政治在想象根本性变革方面存在先天缺陷。但在去年12月的巴黎,196家政府同意必须将全球变暖幅度限制在前工业化水平以上1.5℃以内——这一目标很有希望带来这样的转变。实现这一目标需要克服严重的政治挑战,这反映在一个事实上:一些人所鼓吹的解决方案其实弊大于利。

一个势头很猛的战略强调必须进行大规模技术干预控制全球恒温器。地质工程技术支持者认为,常规适应和缓解措施根本无法让排放下降速度快到足以阻止危险的变暖。他们说,“碳捕捉和储存”(CCS)等技术是限制伤害和人道灾难的必要条件。

气候变化国际委员会似乎也同意这一点。其第五版评估报告围绕“负排放”的概念——即吸收大气中的过多二氧化碳的能力——构建了实现巴黎气候目标的情景。

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