26 Jul '11, 2am

Melting Arctic Ice Releases Stored Toxic Chemicals

Persistent organic pollutants (POPs), which include such nasty compounds as DTD, lindane, and chlordane, were once commonly used in the agriculture industry as pesticides -- though scientists soon learned that these chemicals have grave consequences on human and environmental health. Ten years ago, POPs were largely banned worldwide, but the chemicals proved resilient and capable of long-range transport, which is why POPs can be detected even in places where they've never been used. Ultimately, a significant amount of the POPs ended up in the cold, arctic regions where icy temperatures effectively 'trapped' the chemicals -- preventing them from being spread into the environment. But now, say researcher from Canada, Norway, and China, as that regions of the world experiences warming associated with climate change, those toxins are being released. "Our results indicate that ...

Full article: http://www.treehugger.com/files/2011/07/melting-arctic-ic...

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