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Published daily in Bend, Oregon, by Western Communications, Inc. Copyright 2007.
By James Gorman / The Bulletin
April 20, 2012
Polar bears, long thought to have branched off relatively recently from brown bears over the past 150,000 years or so to cope with life on Arctic Sea ice, are not descended from brown bears, scientists report.
Instead, according to a research team that looked at DNA samples from the two species....