REVISED AND UPDATED EDITIONApproximately 75,000 years ago, an event occurred that almost wiped out human life. According to a stunning new theory, this singular event may also have completely altered the genetic evolution of humankind. It was an event that released 3,000 times the energy of Mt. St. Helens.The new book, Supervolcano, explores this eruption of the Toba supervolcano in Sumatra, Indonesia, its far-reaching impact, and the strong possibility...