The need to cut greenhouse gases has become increasingly clear as predictions of global warming – denounced as “alarmist” when they were first made just a few years ago – have repeatedly turned out to have been too conservative. We are approaching a point of no return, at which feedback loops will kick in and continue to warm the planet, no matter what we do.
随着对全球变暖的预言——在几年前还被讥为“杞人忧天”的论调——的反复出现并变得极富争议性，削减温室气体排放的必要性也逐渐变得清晰起来。而我们正在走进一个死胡同，不论做出何种努力，这场恶性循环都将持续下去并使地球暖化。