STUDIES BACK CALLS FOR MORE REGULATION OF POLLUTION NEAR HIGHWAYS

New scientific evidence linking traffic pollutants to human health risks may lend weight to activists' claims that EPA should more strictly regulate highway emissions, air pollution scientists say. Recent studies, including some funded by EPA, suggest mobile source air toxics (MSATs) in heavy traffic areas may pose a significant threat to human health. EPA is currently performing studies to determine what regulations may be necessary for areas of heavy traffic, known as "hot spots," agency sources say. The studies are...