The destructive force of wildfires in the U.S. is well documented. Every year, on both the east and west coasts of the country, and due to both environmental and man-made factors, fires rage, and homes and habitats are destroyed. But beyond the obvious dangers, these fires cause other, more invisible damages. Certain nanoscale particles in the atmosphere known as organic aerosols—particles released when organic materials like trees and other plant matter are burned—have been linked to an increased risk of heart disease, and even death. hese particles don't just pose a threat to the region where the fire burns. Until now, most models of atmospheric particle movement have made certain assumptions about how these organic aerosols will affect human health based on how they react with the atmosphere.