Episode Details

Alaska’s rivers are turning orange—not a scenic glitch, but a climate alarm: thawing permafrost is unleashing acidic, metal-laden water that’s poisoning fish and plants vital to Indigenous communities. Scientists have built a predictive model that maps risk by analyzing rock types, fault lines, and permafrost temps, pinpointing hotspots like the Noatak watershed where Dolly Varden fish are critical for survival. The rust traces back to ancient seafloor minerals pushed up millions of years ago, now surfacing as Arctic warming accelerates. While some southern areas may see fewer new seeps, northern rivers like Nimiuktuk and Anisak face rising danger. The model, soon to be public, aims to help communities and scientists worldwide anticipate and adapt to this invisible but devastating ripple of climate change.

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