[Sunspark]

I often wonder if it's something like car tire dust. All those vehicles eroding away the tire material which then goes into the air, soil and water. It goes somewhere.

[mediaman]

Exactly that was found to be responsible for mass killings of salmon in the Puget Sound, and the consequent deaths of orcas and other wildlife.

A rubberizer additive put in tires was getting atomized and then washed off into the streams. It makes salmon swim in circles until they die.

Does it do anything to people? We don't know.

[FooBarBizBazz]

> swim in circles until they die

Quite a metaphor when applied to people.

[Frost1x]

This falls under the umbrella of "particulate matter" and is studied quite a bit. I'm not that familiar with particulates from road dust (specifically from tire erosion), but particulate matter is frequently studied (though not as much for endocrine disruption, at least not that I am familiar with): https://en.m.wikipedia.org/wiki/Particulates