Hardy, elusive and smart, the wolverine dominates the harsh Alaskan wilderness.
In the wild and in captivity, wolverines generate enthusiasm and dedication.
Searching Glacier National Park for clues to how wolverines survive.
For two orphaned wolverines, filmmaker Steve Kroschel plays the role of father.
In the midst of receding glaciers, the team searches for a particularly elusive wolverine.
Researchers continue to endure hardship in the quest to learn more about wolverines.