But at this year's global climate conference -- the first since the United Nations said the 1.5C threshold would be missed -- nations appear unsure how to take the news.
The world has already warmed about 1.4C above pre-industrial times and the UN declared in September that crossing 1.5C -- the most ambitious target threshold of the Paris accord -- was imminent and unavoidable.
Yet in Turkey, where the COP31 negotiations are at the midway point,…