Witness the power of our restless planet to both create and destroy. Watch red-hot lava flow from an erupting volcano, see how earthquakes create tsunamis, and meet scientists past and present who have helped us understand our turbulent world.

Includes index.

An unstable Earth -- Fire from below -- Tectonic plates -- Mount St. Helens -- Ash and dust -- Fiery rocks -- Gas and lightning -- Hot spots -- Ocean floor -- Mount Vesuvius -- St. Pierre -- Affecting global climate -- In hot water -- Sleeping beauties -- Life returns -- Studying volcanoes -- Other planets -- When the earth moves -- Intensity and magnitude -- Shock waves -- Measuring earthquakes -- Mud, fire, and floods -- State of emergency -- One step ahead -- Anger of the gods -- Did you know? -- Timeline -- Find out more.