Next 50 years may be last for polar bears

Shrinking sea ice will eliminate nearly all of the world's polar bear population in the next 50 years, U.S. government scientists predict.

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<p><a href="http://www.physorg.com/news108529109.html">Next 50 years may be last for polar bears</a></p> <p>Shrinking sea ice will eliminate nearly all of the world's polar bear population in the next 50 years, U.S. government scientists predict. </p>