为什么仅仅削减碳排放是不够的

就在二十年前,为了保护地球的臭氧层不受有害气体排放的侵袭,全球各国政府共同签署了《蒙特利尔议定书》。而当年只有少数人能预见到这个决定的意义是如此深远。

该议定书明确要求逐步减少诸如氟利昂(CFCs)这类物质的使用——这类物质通常存在于冰箱,塑料泡沫和头发定型水当中——以修补过滤阳光中有害紫外线的薄薄臭氧层。到2010年时,将有近100种类似氟利昂这类的破坏臭氧层物质在全球范围内遭到淘汰。

试想如果没有20年前所做的决定,大气中的破坏臭氧层的物质含量将在2050年时达到1989年的十倍。这意味着额外增加2000万皮肤癌病例以及1.3亿白内障患者,更别提对人类免疫系统,野生动物和农业所造成的危害了。

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