A new study links chronic exposure to particulate pollution from wildfire smoke to 24,100 deaths annually in the United States. This pollution is a major risk factor in the western US states, according to research. The study emphasizes that forest fires cause pollution with small particles that threaten the health of the population. Climate change has made these fires more destructive, according to the findings. Smoke from wildfires worsens air quality in many American cities. Toxins from wildfires spread thousands of kilometers and penetrate homes.