Ten years ago, wolves were set free again in Yellowstone. Now, for the first time, the project’s leader and an award-winning nature writer recount the intimate details of this historic endeavor. Few were prepared for the outpouring of emotion inspired by the reintroduction of these wolves, or for the changes that came, both in the land and in the minds of people. The book weaves together never-before-published scientific discoveries with spellbinding tales of the wolves’ behaviors. The wolves have not only survived, but also thrived, spilling a fresh measure of wildness across the world’s first national park.