Earth simmered to the sixth hottest year on record in 2021, according to several newly released temperature measurements.
And scientists say the exceptionally hot year is part of a long-term warming trend that shows hints of accelerating.
Two U.S. science agencies — NASA and the National Oceanic and Atmospheric Administration — and a private measuring group released their calculations for last year’s global temperature on Thursday, and all said it wasn’t far behind ultra-hot 2016 and 2020.