The Wall Street Journal-20080130-Viking Bears Did Fine

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Viking Bears Did Fine

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The editorial "The Polar Bear Express" (Jan. 28), referring to the latest environmentalist icon, should have added that unless the polar bears are a very recent species, these animals evidently managed to survive a considerably warmer period about 1000 years ago, when "Greenland" was named and settled by the Norse.

Denis Ables

Vienna, Va.

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