Narwhals more at risk to Arctic warming than polar bears

(AP) -- The polar bear has become an icon of global warming vulnerability, but a new study found an Arctic mammal that may be even more at risk to climate change: the narwhal.

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<p><a href="http://www.physorg.com/news128352515.html">Narwhals more at risk to Arctic warming than polar bears</a></p> <p>(AP) -- The polar bear has become an icon of global warming vulnerability, but a new study found an Arctic mammal that may be even more at risk to climate change: the narwhal.</p>