Female polar bears and their cubs are swimming increasingly longer distances causing higher mortality rates for the young bears, a new study finds. Martin Berman reports.
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Animals: Polar Bears Forced to Swim Longer Distances
Female polar bears and their cubs are swimming increasingly longer distances causing higher mortality rates for the young bears, a new study finds. Martin Berman reports.
Added: Jul 20, 2011
Views: 4731 Views
Runtime: 01:05
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