The belief that all life-forms are interconnected and share the same breath-- known in the Rarámuri tribe as iwígara-- has resulted in a treasury of knowledge about the natural world, passed down for millennia by native cultures. Salmón, an ethnobotanist, builds on this concept of connection and highlights plants revered by North America's indigenous peoples. He teaches us the ways plants are used as food and medicine, the details of their identification...