Deadly particles threaten millions across America.

Wildfire smoke has quietly become one of America’s most lethal environmental hazards, and new research reveals the full scope of this hidden killer. Scientists have discovered that tiny particles from distant fires can travel thousands of miles, infiltrating our lungs and triggering heart attacks, strokes, and respiratory crises in people who never see flames. The latest analysis shows wildfire smoke already contributes to approximately 40,000 deaths annually in the United States, but this number could nearly double by 2050 as climate change intensifies fire seasons across North America.



