This is one of multiple reasons why Electric cars are much closer to ICE cars in the overall combination of sustainability and societal effects than they are to trains and subways. It's like
[ICE cars---Elec Cars---------------------------Trains/Subways]
yet even on the relatively informed HN I often see people pretend it's more like
[ICE cars-----------------------Elec cars-------Trains/Subways]
I think it's most of it is because EVs are shiny and cool and represent technological progress and people feel attached to certain brands. That, along with personal convenience/privilege.
Tire abrasion is happening everywhere there is traffic, so people in cities are probably inhaling these particles daily without noticing it.
It raises question about particle size distribution. Nanoplastics behave very differently from larger particles and may interact with biological tissues in ways that are still poorly understood...
Urban environments might therefore be an important long-term exposure pathway that hasn’t been studied as much as water or seafood contamination
There is no safe level of air pollution. If you haven’t invested in a home air filtration system then you might want to consider it.