Bok
04-19-2012, 05:00 PM
New analysis reveals the Arctic species dates back about 600,000 years
More... (http://www.sciencenews.org/view/generic/id/340000/title/Polar_bears_older_than_previously_thought)
More... (http://www.sciencenews.org/view/generic/id/340000/title/Polar_bears_older_than_previously_thought)