The PyroceneA dramatic reorientation of humanitys relationship with fire The Pyrocene tells the story of what happened when a fire wielding species, humanity, met an especially fire receptive time in Earth's history. Since terrestrial life first appeared, flames have flourished. Over the past two million years, however, one genus gained the ability to manipulate fire, swiftly remaking both itself and eventually the world. We developed small guts and big heads by