Wildfires August 18, 2021 4:02 pm Climate Change is Making Wildfires More Frequent — and More Dangerous 2020 was the worst wildfire season on record—and wildfires are only getting more destructive. Learn what causes them and how climate change contributes. US & World Videos 3:26 Weather forecast: Not as cold, not as windy 1:52 Respiratory virus spike means Mass General Brigham staff will mask up 0:51 WATCH: Group of people helps woman pinned under vehicle in Lawrence 2:03 Armed robbery of FedEx driver in Harvard caught on camera 2:32 Local students prepare for semester in LA amid wildfires