One thing is clear: if we are not to be totally reckless with our planet’s climate, we cannot burn all the coal, oil, and natural gas that we have already located. About 80% of it – especially the coal, which emits the most CO2 when burned – will have to stay in the ground.
有一点是显而易见的：如果我们对地球气候并非不管不顾，就不能把我们已有的煤、石油和天然气都烧了。这些东西大约80%——特别是煤，它燃烧时释放的二氧化碳最多——必须呆在地里。