Yawn.
"In a largely procedural move, the WHO has moved diesel soot out of the 'stuff we're pretty sure causes cancer' box and into the 'stuff we know causes cancer' box." Would be a good summation of the linked article.
Nothing unexpected or terribly noteworthy there, except the sensationalistic and inaccurate headline asserting "soot as bad as asbestos!"
(Just because both are carcinogenic, you cannot judge a priori the magnitude of risk of one relative to the other in real-world concentrations. E.g.: both caffiene and cocaine are CNS stimulants, but you can't accurately extrapolate this to "coffee as bad as crack!"
(Unless your only goal is to sell the story, and to heck with accuracy...)
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