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As Alaska warms and permafrost thaws, the chemistry of the Yukon River's water is transforming chemically, new research shows. Long-term monitoring reveals that levels of calcium, sodium, phosphorus, magnesium and sulfates are increasing in the river's waters. That is evidence of widespread permafrost loss, which has allowed water to flow freely through thawed, mineral-rich soils and carry some of those minerals into the river. [Source: Bristol Bay Times]
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