Here is the draft letter from the EPA’s Clean Air Scientific Advisory Committee concerning the EPA staff’s most recent junk science-based assessment of the health effects of air borne particulate matter. A majority of the CASAC rejected the EPA staff’s claims that PM is scientifically associated with premature mortality and other health effects. In other words, after spending $600 million on PM2.5 research, EPA has nothing.
You can read the October 2019 testimony of JunkScience.com and friends to CASAC here.