More than six months after the eruption of the Yellowstone supervolcano, Alex and Darla retrace their steps to Iowa hoping to find Alex's parents and bring them to the tenuous safety of Illinois, but the journey is ever more perilous as the remaining communities fight to the death for food and power.

After the eruption of the Yellowstone supervolcano destroys his city and its surroundings, fifteen-year-old Alex must journey from Cedar Falls, Iowa, to Illinois to find his parents and sister, trying to survive in a transformed landscape and a new society in which all the old rules of living have vanished.

"Meet the Secret Explorers - a band of brainiac kids from all around the world. Everyone in this diverse group of young experts has a specialty, from outer space to dinosaurs, and each story follows a character who is chosen for a "secret exploration." In this fun, fact-filled children's book, we join volcanoes expert Cheng on an exciting mission to Mount Yasur on the island of Vanuatu. Joined by biology expert Leah, the team is beyond excited to...