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Discusses the reasons people go exploring, and traces the history of exploration from ancient civilization through the space program.

Explains how the remains of an animal or plant fossilize over millions of years, where fossils may be found, and what we can learn from them.

An introduction to the five fresh-water lakes that contain one-fifth of the earth's standing fresh water.

A brief history of the Hopi Indians describing their customs, religious beliefs, interactions with other tribes, and the changes modern civilization has brought to their traditional way of life.

Briefly introduces some distinctive characteristics, habits, similarities, and differences of a number of different insects.

Describes the physical characteristics, habits, and natural environment of monkeys and apes.

A brief history of the Navajo Indians describing customs, interactions with white settlers, and changes in traditional ways of life brought on by modern civilization.

Describes the history, beliefs, customs, homes, and day-to-day life of the Nez Perc? Indians.

Specifically discussing the Pacific Ocean, provides basic information about the sea, including wave formation, currents, tides, marine biology, and the landscape of the ocean floor.

Describes the history, beliefs, customs, homes, and day-to-day life of the Pawnee Indians.

An introduction to the formation and identification of a variety of rocks and minerals.

Describes the history, beliefs, customs, homes, and day-to-day life of the Shoshoni Indians.

Introduces spiders and their habits: where they live, what they eat, how they move and protect themselves, how they help and harm us, and why they are called engineers.

Describes the function and structure of the Supreme Court and gives a brief overview of some important cases and well-known justices.

An introduction to the United Nations describing its purpose and organization and the work of its many specialized agencies.