Wolf secrets exposed by GPS collars
October 22, 1997 - They're still a rare sight in most of the state, but timber wolves are making a comeback in Minnesota. Held strictly to northeastern forests a few decades ago, wolves are now spreading west and south…toward St. Cloud, Grand Forks, and Elk River. Mainstreet Radio's Leif Enger reports on biologists using satellite technology to forecast where wolves will show up next.