Isle Royale National Park is a remote island in Lake Superior where, between 2009 and 2018, the wolf population fell from 24 to only two - the lowest in more than 50 years. Now, the National Park Service is re-introducing wolves to the area in an effort to restore the role of these predators in the island ecosystem.
An overview of salmon's journey after being released from the hatcheries into the wild.
Mountain lions and wolves have suffered from our ignorance ever since pioneers inundated their wilderness homes. But an emerging view of mountain lions’ unique ecological role is coming into focus.
An overview of how humans have impacted salmon populations for more than 150 years.
A look at efforts to remove dams and restore streams and salmon runs.