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Biologist Devotes Life to Island Wolves

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It's been a cold winter this year, especially for Rolf Peterson. Peterson is a wildlife biologist who studies wolves and moose on Isle Royale. Every year starting in January Peterson spends several weeks on the island at the northernmost spot in Michigan surrounded by the frigid waters of Lake Superior. The environment is harsh, but Peterson says it's the best time to observe wild animals, and as the Great Lakes Radio Consortium's Gretchen Millich reports, as his research has uncovered some of our most basic knowledge about predators and their prey.

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