O'Donnell noted, however, that the voluntary program does not eliminate the need for EPA to set tough standards for new diesel trucks and buses.
Sulfur is a poison that inhibits performance of pollution control devices.
Diesels also emit an array of toxic chemicals and can produce up to half the soot particles found in urban air. Last week, state and local clean-air regulators reported that diesel fumes cause more than 125,000 cancers. EPA noted there are more than four million heavy-duty diesel vehicles operating in the United States, most of them without pollution controls. The press release posted here has been provided to Common Dreams NewsWire by one of the many progressive organizations who make up America's Progressive Community . If you wish to comment on this press release or would like more information, please contact the organization directly.