ScienceDaily (Mar. 1, 2010) A rare, ancient polar bear fossil discovered in Norway in 2004 is yielding a treasure trove of essential information about the age and evolutionary origins of the species whose future is now seen as synonymous with the devastation wrought by climate change.
A paper published in the current issue of the Proceedings of the National Academy of Sciences by researchers at Penn State University, the University at Buffalo, the University of Oslo, and other institutions is filling in key pieces of the evolutionary history of polar bears and brown bears, including their response to past climate changes.
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