Last year was one of the three warmest on record, with glaciers melting, sea levels rising and a spate of wildfires, heatwaves and droughts, research published in the Bulletin of the American Meteorological Society (BAMS) showed.

The BAMS annual State of the Climate Report, by 528 climate scientists from 61 countries, said only 2015 and 2016 were hotter than 2019, based on records dating to the mid- to late 1800s.