Wildfire Smoke (IMAGE) NOAA Headquarters Caption Smoke from the Fourmile Canyon wildfire west of Boulder, Colo. last fall flows toward the city. A new NOAA study found isocyanic acid in the smoke from that fire -- and in urban Los Angeles air, in cigarette smoke, and in laboratory-simulated wildfires. That acid has been linked with health effects from cataracts to cardiovascular disease. Credit Daniel Lack, NOAA/CIRES Usage Restrictions Please run full credit: Daniel Lack, NOAA/CIRES (or Cooperative Institute for Research in Environmental Sciences) License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.