Why Wildfire Smoke Still Poses Health Risks Indoors

Douglas McIntyre, Editor-in-Chief at Climate Crisis 24/7, highlights new research from UCLA showing that wildfire smoke, even when doors and windows are closed, can seep into homes and pose major health risks. Fine particles known as PM2.5 are small enough to enter the lungs and heart. While the issue is more severe in developing countries, the U.S. has seen major exposure, including incidents in New York and Los Angeles caused by both local and distant wildfires.