Aerobiology is the study of airborne particles that have an impact on humans and other organisms. Every day, we are exposed to airborne particles, including "e;natural"e; particles such as pollen, bacteria, and fungi, and "e;unnatural"e; particles, such as asbestos fibers and noxious chemicals. Aerobiology highlights the current interests in this field, primarily the ecology and distribution of airborne particles and their effects on health.