Global warming is set to cross the 1.5C limit within the next few years, exposing people and ecosystems to more severe climate damage, the UN's environmental agency said on Wednesday. But temperatures could eventually be brought back down if emissions fall sharply and carbon dioxide is removed from the atmosphere.
The UN Environment Programme (UNEP) said the 1.5C threshold was the more ambitious goal countries agreed to pursue under the 2015 Paris climate agreement, alongside a commitment to keep warming well below 2C.
