Witness the beauty and wonder of Yellowstone National Park with wildlife biologist Doug Smith, who led the reintroduction of wolves in this legendary American landscape in this program on Wednesday, July 30.

Yellowstone National Park contains many stories, including one of the best case studies in wildlife conservation. Wildlife biologist and National Geographic Explorer Doug Smith led the project that reintroduced gray wolves in the 1990s. We join him on assignment in the park to see how the landscape has changed since the wolves arrived, including never-before-seen photos and videos of the quest to bring back this apex predator.