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Record levels of mercury released by thawing permafrost in Canadian Arctic

Permafrost thaw slumps in the western Canadian Arctic are releasing record amounts of mercury into waterways, according to new research by University of Alberta ecologists.
Mercury is a naturally occurring contaminant that is toxic to humans and other animals in large quantities as it accumulates in organisms and food webs. Sediments in permafrost are estimated to store more mercury than Earth's oceans, atmosphere, and soil combined. And, as climate change causes permafrost to thaw, the mercury stored in permafrost becomes available for release into the surrounding environment.  Read more...

 

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