For months in early 1980, scientists, journalists and ordinary people listened anxiously to rumblings in the long quiescent volcano Mount St. Helens. Still, when a massive explosion took the top off the mountain, no one was prepared. Fifty-seven people died and the lives of many others were changed forever. Steve Olson interweaves history, science and vivid personal stories to portray the disaster as a multi-faceted turning point. Powerful economic,...