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Published online 23 November 2007 | Nature | doi:10.1038/news.2007.282
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Polar bears dying in years of early ice melt
Oldest and youngest bears in Canada’s Hudson Bay die off after warm springs.
A census of polar bears in Canada’s Hudson Bay has lent some hard numbers to the long-held fear that retreating sea ice is causing some bears to starve or drown.
Biologists have predicted that polar bears will struggle to survive as summer comes sooner to the Arctic.
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