The Sunday edition of the Dallas Morning News highlights a story on the city's attempt to block the EPA's request to tighten area standards on acceptable ozone levels.

According to the story, many scientists and medical groups have concluded that the current ozone limit, set in 1997, can no longer be considered safe. They include the American Academy of Pediatrics, the American Medical Society, the American Thoracic Society, the American Lung Association, the administrator and staff of the EPA, and all 23 members of a panel that reviewed the science for the EPA.

Automobiles, followed by industry, are considered the number one contributor to DFW's high pollution levels.