Alison Pearce Stevens

"Twelve million years ago, rhinos, elephants, and camels roamed North America. They would gather at nearby watering holes -- eating, drinking, and trying not to become someone else's lunch. But one day, in the region we now know as Nebraska, everything changed. The explosion of a supervolcano a thousand miles away sent a blanket of ash that buried these animals for millennia -- until 1953, when a seventeen-year-old farm worker made an unbelievable...