
15,000 Deaths from Wildfire Smoke Linked to Climate Change in U.S. Study Finds
A landmark study has found that human-caused climate change led to 15,000 additional deaths from wildfire air pollution in the continental United States over a 15-year period ending in 2020. The research, led by Oregon State University and published in Nature Communications Earth & Environment, is the first to quantify how many people have died as a result of climate-driven increases in wildfire-related fine particulate pollution (PM2.5).
The study reveals that 2020 alone accounted for over a third of these deaths, during which massive wildfires burned across California, Oregon, Colorado, Arizona, and the Pacific Northwest. These fires released vast quantities of fine particulate matter—PM2.5—tiny particles that can penetrate deep into the lungs and bloodstream, causing and worsenin...