Living in the 'Diesel Death Zone'

The US Supreme Court heard arguments today in a case that could weaken efforts to clean up the air at the Port of Los Angeles, a major source of the air pollution linked to cancer and respiratory diseases in Southern California. The case is a challenge to the Port's Clean Truck Program, by the American Trucking Association. What has diesel pollution done to community health around the port complex? How difficult is it to clean up? Independent producer Tena Rubio has this report.

This story was edited by Matt Holzman for KCRW's Independent Producer Projectand for the USC Annenberg School for Communication & Journalism, The California Endowment Health Journalism Fellowships.