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A part of the Souther Selkirk caribou herd moves through the Selkirk Mountains in November 2005. (Garry Beaudry/AP) At a Glance The last known wild caribou in the lower 48 has been placed into captivity.Biologist from British Columbia captured the female in hopes to introduce her and two males to a more stable herd in Canada.The future of wild caribou in the contiguous United States remains uncertain. The last known wild caribou in the lower 48 has been placed into...