Some politicians want to see an expensive new crack down on particulate emissions from power plants, based on a recent EPA study that examined the risk of death from particulates in dozens of U.S. cities.  But according to the Competitive Enterprise Institute, the EPA study included such unexplained findings as increased mortality in men, but not women, and in those with less but not more education.  Even more surprising, was that higher particulate levels were not at all associated with death due to respiratory disease, which should be one obvious link.  Since this evidence suggest that current exposure levels have little or no effect on mortality, maybe it’s time to filter out the smog on this particular particulate debate.