LiveScience: Polar bears, the iconic victims of climate change, are shifting their migration patterns because of changes in sea ice. The bears are arriving on land earlier and departing later, a new study found, and it's threatening their access to food. A team of researchers studied the migration patterns of polar bears (Ursus maritimus) in Hudson Bay, Canada, using satellite-tracking data collected between 1991 and1997 and 2004 and 2009. They found that the rate at which sea ice melts and re-freezes, as...
URL: http://news.yahoo.com/melting-sea-ice-keeps-hungry-polar-bears-land-000751895.html
Enclosure: http://l1.yimg.com/bt/api/res/1.2/nH1oc1.PIfYl45KtOV.rsA--/YXBwaWQ9eW5ld3M7Zmk9aW5zZXQ7aD0zODI7cT03OTt3PTU3NQ--/http://media.zenfs.com/en_US/News/LiveScience.com/polar-bear-migration.jpg1363731139
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