A Virginia-based public policy foundation claims that the EPA knowingly piped diesel exhaust into the lungs of dozens of people at UNC-Chapel Hill.

The American Tradition Institute Environmental Law Center is suing the Environmental Protection Agency for on-going experiments at the EPA’s Human Studies facility at UNC-Chapel Hill. The lawsuit alleges an EPA trial took diesel exhaust and piped it into the lungs of 41 people to see what would happen.

The institute says the EPA has exposed unhealthy patients to high levels of PM2.5, a toxic substance found in diesel exhaust, in experiments that began roughly six years ago.

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