An introduction to the deserts of the world and the unique characteristics of their environments.

An introduction to the various lakes of the world and the impact of people on them.

An introduction to the types and characteristics of rivers and to their formation, drainage, and floods.

Explains what causes earthquakes, how they are measured and predicted, and the effects they can have on people and the environment.

Describes the geologic conditions that lead to the formation of both sea caves and underground caves and presents unusual rock formations and animal life found in caves.

Explores the phenomenon of geysers, discussing their relationship with volcanic activity, the mechanics of how a geyser works, steam vents, hot springs, and mud pots.

Explores the formation and different types of islands, discussing coral reefs, volcanic activity, and island flora and fauna.