This is our most ambitious jungle build yet—a five-story villa constructed entirely with primitive tools and human strength.

Tool usage is one of the things that set humans apart from most of the animal kingdom, and 20 years ago, it was believed that a "human revolution" of skill and innovation happened among early humans ...

Excerpted from Satellites in the High Country: Searching for the Wild in the Age of Man, Reproduced by permission of Island Press, Washington, D.C. We were standing in a circle on a beach of smooth ...