Where there is smoke: Introduction to the virtual special issue of health impacts of wildland fire smoke exposure - Selected papers from the 2nd International Smoke Symposium

•Public health impacts from wildland and prescribed fire presented during the Second International Smoke Symposium•Advances in research and technology improved communication of health effects due to smoke across spatiotemporal scales•Thousands of smoke-related premature deaths and illnesses in the U.S. cost tens to hundreds of billions of USD$•Successful implementation of local to regional burn plans can reduce ozone (O3) exposure Smoke from prescribed burning of winter wheat fields in Arkansas with growing rice fields in the foreground, 2005. Photo courtesy of Jessica McCarty and B. Eric McCarty. [Display omitted]