由于发展中国家的排放量低于发达国家 — — 所以说，随着发展中国家的脱贫政策和经济的不断增长，在短期内碳排放量会上升 — — 有人提议，到2050年，发达国家的碳排放量至少应该削减以达到1990年水平的80 % 。 要实现这个目标，看来还有很多事情要做。
Since emissions from the developing countries are on the whole lower than those of the developed world – and will need to continue to rise in the short-term as they maintain economic growth and address poverty – it has been proposed that developed countries cut emissions by at least 80% relative to 1990 by 2050, with major steps towards this goal over the next decade.