'Rising chance' the world could exceed the key 1.5AdegC global warming.

ISLAMABAD -- There is a 'rising chance' that the world will exceed the key 1.5AdegC (2.7AdegF) global warming limit set by the Paris Agreement in the next five years, scientists said. World leaders agreed in 2015 to keep warming this century under 1.5AdegC above pre-industrial levels in order to avoid the worst impacts of climate change. However, experts found that there is one-in-five chance that global mean warming will exceed this limit for at least one year before 2024. 'This study shows - with a high level of scientific skill - the enormous challenge...