More from the War on Science. A UCLA professor points out that evidence used to justify state regulations is fraudulent, as is the Ph.D. of the lead researcher, and is fired for his efforts:

Dr. Enstrom, a research professor in UCLA's Department of Environmental Health Sciences, published important peer-reviewed research demonstrating that fine particulate matter does not kill Californians. Also, Dr. Enstrom assembled detailed evidence that contends powerful UC professors and others have systematically exaggerated the adverse health effects of diesel particulate matter in California, knowing full well that these exaggerations would be used by the California Air Resources Board (CARB) to justify draconian diesel vehicle regulations in California. In addition, [Dr Enstrom] argues that he exposed the fact that the lead author of the key CARB Report used to justify the diesel regulations did not have the UC Davis Ph.D. degree that he claimed. Instead, according to the suit, this "scientist" bought a fake Ph.D. for $1,000 from a fictional "Thornhill University." Finally, Dr. Enstrom discovered that several activist members of the CARB Scientific Review Panel on Toxic Air Contaminants have exceeded the legislatively mandated three-year term limits by decades. The suit contends that shortly after Dr. Enstrom revealed this systematic wrongdoing, UCLA not only issued a notice of termination, it denied him any compensation for his work by systematically and wrongfully looting his research fund accounts. Dr. Enstrom worked for more than a year without pay as he in good faith appealed his wrongful termination using UCLA procedures. Ironically enough, the fake "scientist" was only suspended for his misconduct while Dr. Enstrom was terminated for telling the truth.