May 2020 was the hottest May on record, reported the Copernicus Climate Change Service on June 5. Their data shows that globally, last month was 0.63 C warmer than the average May from 1981-2010.

A prolonged heatwave in Siberia is “undoubtedly alarming”, climate scientists have said. The freak temperatures have been linked to wildfires, a huge oil spill and a plague of tree-eating moths.

New temperature maps for the endless stretches of Russian Arctic lands bear witness of unprecedented warming.

Scientists say the world's permafrost is getting warmer, with temperatures increasing by an average of 0.3 C over a decade.