Examines the nature, origins, and dangers of floods and discusses the different kinds and their damaging effects.

Explains volcanic activity, how it originates in the earth's core, and what happens when a volcano erupts. Surveys monitoring devices, documented eruptions, and the ecological effects. Studies the power and unpredictability of volcanic activity and describes some recent erruptions, including Mt. St. Helens.

Examines tidal waves and the flooding they cause, as well as other kinds of floods and their causes.

Examines the nature, origins, and dangers of floods and discusses how to prevent them and protect against them.

Describes tsunamis, where they occur, what causes them, and what can be done to protect people from them.

Explains why earthquakes occur and describes the technology used to study them, the damage they inflict, and some of the more famous earthquakes in history.

Defines tsunamis and describes the geologic forces that cause them, as well as the damage they can inflict when the huge walls of ocean water strike land.

Describes the origins and effects of wildfires, and provides information on the history of wildfires, prediction, control, and recovery.