As president Trump seeks to rein in the EPA, critics have been touting the agency supposedly life-saving efforts combating  air pollution but according to there’s no credible evidence to back up these claims, especially related to small particulate matter or PM 2.5.

EPA says these particles cause as many as 500,000 American deaths per year but has admitted that it’s epidemiologic studies provide no direct evidence. Since no lab animal has ever died from PM 2.5 exposure and even tests on thousands of human  volunteers have shown no dangerous effects.

Such claims about pollution are quickly being filtered away.