A chemical found in tires is leading to the deaths of tens of thousands of coho salmon in Puget Sound every year. Chemical companies are searching for an alternative, but say the unique chemistry and function of 6PPD are major challenges.
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Formal legal processes are underway in Washington and California to seek alternatives to the highly toxic chemical 6PPD in tires.
With a worldwide market valuation somewhere around $1 billion a year for the single chemical 6PPD, tire companies and their chemical suppliers are working overtime to find a safe and effective replacement for the tire additive. The financial stakes are enormous, since virtually every tire on the market today contains 6PPD.
“The environmental
A 2026 report assesses region-wide cumulative risks for eelgrass and kelp in Puget Sound, identifying hotspots of concern, the relative threats, and projected future risks across eight marine subregions.
Researchers at the Puget Sound Institute and Washington Department of Fish and Wildlife present the first comprehensive risk assessment of threats to eelgrass and canopy kelp in Puget Sound.
Audio recordings of rhinoceros auklets on Protection Island.