Exposure to ambient air particulate matter has been associated with increased human deaths and cardiopulmonary morbidity, such as lung infections and increased asthma symptoms. I am investigating some types of PM and associated gases that may be associated with those health effects so to better regulate or manage the sources of the airborne particles which are identified as playing a role in the adverse health outcomes. I am currently focusing on the effects of diesel exhaust using a variety of approaches ranging from exposing cultured human lung and vascular cells to the exhaust, to studying responses of humans exposed out in traffic. I am currently designing and implementing testing strategies to assess the toxicity of the future types of vehicular emissions. Additionally some of my research effort attempts to identify what populations are more sensitive to the effects of air pollutants, and the genetic, diet, and environmental reasons behind the increased sensitivity.