LA Observed: Measuring air pollution along LA freeways by KCRW

Environmental officials are going to start tracking the amount of air pollution in areas near Southern California freeways. They’ll gather that information through a series of monitoring stations, to see how the air quality is affected by engine exhaust. That will provide some new insight into the health risks of living near these heavily traveled corridors. Kevin Roderick, editor of LA Observed, joined KCRW's Steve Chiotakis to discuss this latest news story.