Searching for True Wilderness in an Age of Google Earth and GPS

For his new book “Satellites in the High Country,” environmental journalist Jason Mark treks from the Black Hills of South Dakota to Washington State’s Olympic Wilderness, looking for the truly wild, untamed places of the West. Along the way he documents how humans have impacted nature, from plastic trash clogging riverbeds to conservationists’ relentless tracking of wolves. Mark joins us to contemplate the meaning of wilderness in a time of the Anthropocene, or “the Human Age,” and how best to value and cherish what’s left of the wild.