Rangers in Wyoming's Grand Teton National Park were unable to determine if speed was a factor in the recent vehicle strike that killed a sub-adult grizzly bear on a park highway. The 5-year-old male bear,

A 5-year-old bear that was a member of a well-known and beloved grizzly family in Wyoming's Grand Teton National Park died after it was hit by a vehicle, the same fate that befell his mother late last year,