解决全球变暖的便宜之计

发自哥本哈根——全球变暖对于我们来说,意味着将有更多人将死于高温。海平面将升高,世界上将有更多人罹患疟疾并受到饥饿与贫困的威胁。而尽管这些问题已经得到了足够的关注,但人类目前为切实阻止上述后果所做的一切都还只是九牛一毛。尽管人们一再承诺减排,但温室气体的排放量却仍然持续上升,

事实上,确保气候不再肆意变化是和我们每个人都利益攸关的事情。在过去,我们求助于气象学家来了解全球变暖问题。而如今人们则需要求助于气候经济学家来指点一下那些针对全球变暖的不同应对措施所可能带来的效益,成本以及可能引起的后果。

来自世界各国领导人定于今年12月在哥本哈根会面,以共同缔结一个新的条约来应对全球变暖问题。那么政要们是否应该坚持原来的承诺,继续坚持推动不太可能实现的碳排放削减计划?还是将减排计划向后推迟20年?如果我们种更多的树、减少沼气或降低煤炭排放能取得什么样的效果?而把解决全球变暖的全部精力都放在一个技术解决方案上又是否明智?又或者我们要做的,只是适应一个更暖和的地球就好了?

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