In dramatic scenes of cataclysmic destruction and human courage, you'll journey with National Geographic as we learn how earthquakes create and shape our landscapes, even as they destroy cities like San Francisco and Tokyo. Discover how rotating updrafts can build into the towering tornados that sweep the Midwest's "Tornado Alley," or how cloud disturbances can grow into the awesome hurricanes that ravage coastal areas of Bangladesh and Florida. Witness the devastation of flooding in France and China, and learn, as today's scientists have, that the mighty Mississippi cannot be easily tamed. You'll meet heroes, fighting to save homes and lives, but see victims too, suffering unspeakable tragedies.