https://www.independent.co.uk/news/science/pollution-microplastic-waste-tires-b2794350.html
"In recent times, tire wear particles have been found to account for about 45% of all microplastics in both terrestrial and aquatic systems."
"Researchers in 2020 found that more than half of the coho salmon returning to streams in Washington state died before spawning, largely because of 6PPD-Q, a chemical stemming from 6PPD, which is added to tires to help keep them from degrading."
The most frustrating thing about all this? Cities don't clear sidewalks, so more cars