Jul 17 Local News New Studies Show Pollutant Can Harm Lungs The Environmental Protection Agency has reviewed the latest studies of the health impacts of short-term exposure to nitrogen oxides, or NOx. Those impacts can include respiratory trouble and trips to the emergency room. Children and asthmatics are particularly vulnerable. By Kristin Espeland Jul 17 Local News New Studies Show Pollutant Can Harm Lungs Kristin Espeland