EPA science ties PM2.5 exposure to heart problems

Scientific studies jointly conducted by EPA, the California Department of Public Health and academic researchers show more clearly than before the links between exposure to fine particulate matter (PM2.5) and cardiovascular disease, EPA staff says, although the agency is proposing to retain and not tighten its existing PM2.5 air standards. On a May 28 webinar, EPA staff and researchers from the agency’s air and energy research program outlined their findings in an overview of recent research on air quality and...