Ice dwellers — like the walrus — finding less ice to dwell on

By Natalie Angier / The Bulletin
May 20, 2008

Nobody knows how many walruses the world holds. Recent surveys by the U.S. Fish and Wildlife Service and others put the number at roughly 190,000, with the vast majority of walruses in the Pacific half of the Arctic and sub-Arctic Circle and maybe 10 percent in Atlantic waters.

But researchers....

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