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Posted Tue Jun 16 2009: from University of Alberta, via EurekAlert:
Mercury in Mackenzie River delta dramatically higher than previously believed http://apocadocs.com/s.pl?1245174806
... dramatically higher delivery of mercury from the Mackenzie River to the Arctic Ocean than determined in previous studies. She collected samples for three months and discovered the total amount of mercury exported from the river during that three-month period was equal to an entire year's worth of mercury calculated in previous studies.... "Methyl mercury is a neurotoxin and it's primarily passed on to humans through contaminated fish muscle," Graydon said. "This leaves northern communities vulnerable, because a large part of their diet is Arctic fish species and Beluga whales."... "There are very few point sources for mercury in the Arctic," ... Graydon says the biggest contributor of man-made mercury pollution is coal-fired power production.
[Read more stories about: heavy metals, coal issues]

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'Doc Michael says:
Maybe all that mercury will make the melting Arctic reflective.

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