Ubiquitous tire-derived chemical is killing salmon before they spawn: study

Heavy autumn rainstorms have led to a significant die-off of salmon returning to the West Coast from the Pacific Ocean. Scientists have identified 6PPD, a tire additive, as the primary cause. It reacts with ozone to form 6PPD Quinone, a toxic byproduct. This chemical is not only affecting salmon but is also a widespread pollutant due to its presence in billions of tires worldwide. The study highlights the environmental impact of tire abrasion, contributing to microplastics in oceans.

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