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Impacts of White-Tailed Deer on the Ecology of Pennsylvania - Pennsylvania's white-tailed deer population, once decimated, is now over-abundant and damaging forest ecology by destroying tree and native wildflower species and habitat for wildlife. If the deer herd is not reduced, scientists fear large tracts of Pennsylvania's forests could be lost within 100 years. Ann Murray reports. (Golden Quill Award winner for best enterprise/investigative reporting) Aired week of 05/10/2006.