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flag Scientists found 160 tonnes of toxic pollutants in Alaskan permafrost.

flag Chinese scientists analyzed Alaskan permafrost samples and found the top 30 centimeters store an estimated 160 tonnes of hexachlorobutadiene (HCBD). flag The study highlights permafrost as a major reservoir for toxic pollutants, with dissolved organic carbon influencing distribution. flag As climate change thaws the region, the ground may shift from a pollution sink to a potential emission source, increasing ecological risks.

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