50 years ago… the US Public Health Service says particulate matter (PM) is a problem… for your clothes!














50 years ago… the US Public Health Service says particulate matter (PM) is a problem… for your clothes!


From February 6, 1968, note the New York Times article does not even allude to health effects.








via JunkScience.com

http://ift.tt/2sg36aF

February 6, 2018 at 12:10PM

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