Nature in action

Discusses different types of lightning, how they form, where they happen, what thunder is, and how to keep safe when traveling.

Text, photographys, and illustrations help to explain what hurricanes are, how they develop, and some of the damage that they can cause.

Learn about types of caves, how a limestone cave forms, stalactites and stalagmites, and cave life.

Facts about ordinary waves precede information about the causes of the huge waves known as tsunamis and the destruction they bring.

Briefly traces the history of wildfire before going on to discuss types, when and where they start, their behavior, ecological effects, fighting and preventing them.

Describes the formation, different types, and study of tornadoes.

Discusses different types of avalanches, how they form, where they happen, and how to keep safe when traveling in snowy mountains.

Describes how hurricanes form, detailing the different weather factors that may combine to create the deadly storms, with photographs of the damage done by various hurricanes, and tips on how to stay safe in hurricane conditions.

Describes how caves form and what kinds of life can be found in them, and shows how the delicate underground environment must be protected.

Text and photographs discuss the origins, characteristics, and lore of the northern lights known as auroras.