PM2.5: Mass Killer or Mass Fraud?

Whatever eventually turns out to be the truth, it’s hard to argue that PM2,5 is good for us. I am pretty sure that the current regulation is much overblown as we go into areas where this stuff is hardly detectable. But I have spent more than one cursory moment in cities like Cairo, Lagos, Tehran, Dheli, and a number of other far Eastern cities to know that smog is a bad thing. I lived in Paris for years and on certain days during summer, the smog mixed with calm weather to create a yellow dome around and above the city. One could literally smell and taste the air. Current regulations and the aims for more are often risible – but on a lesser level, I am very much in favor of some exhaust gas treatment. 

PM2.5: Mass Killer or Mass Fraud?

EPA is proposing once again to tighten the National Ambient Air Quality Standard (NAAQS) for PM2.5 for the reasons summarized by EPA, below. What is PM2.5 and does it kill people?

JunkScience.com

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