Nearly 23 million acres burned from 1982 to 2020. But almost half of that occurred in 2019 and 2020, and the region may be near a threshold beyond which extreme fires become more common.
Canada's last fully intact ice shelf in the Arctic has collapsed, shrinking by about 80 square kilometers, or 40 percent of its area, over just two days at the end of July, according to scientists at the Canadian Ice Service.
