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An introduction to mountain biomes, looking at where they are located in the world, the types and climates of mountains, and native plants and animals, and discussing why mountains are in danger, and the types of jobs available for people who want to work in the mountains.

Text and photographs show how the people of Afghanistan celebrate holidays and festivals, using art, music, dance, and stories.

Text and photographs portray Puerto Rico's geography and climate, city and rural life, industry, and transportation, focusing especially on the island's status as a Commonwealth.

Introduces the history, religions, holidays and festivals, arts, sports, languages, and literature of Puerto Rico.

A short study of caves, discussing types of caves, where caves are found around the world, cave plants and animals, and challenges to the ecosystem.

Introduces children to the life of influential political leader Condoleezza Rice, discussing her childhood, schooling, years as a teacher, influence on American politics, and other related topics.

The Empire State Building in New York City is one of the worlds most visited buildings.

Presents information on the Civil Rights Movement in the United States between 1954 and 1968, focusing on events and figures from African American history.

A short study of the various types of deserts in the world, where they are located, the plants and animals that inhabit them, their climates, and other related topics.

Presents a short study of tundras, covering where they are located, plants and wildlife, and more.

Presents a brief biography of Mary Pope Osborne, author of the "Magic Tree House" books, and includes a chapter of creative writing tips.

"Presents information on simple machines with a focus on wheels and axles.

From its arctic north to its tropical south, North America is home to many different landscapes, wildlife, natural resources, climates, and cultures.

Describes life before the car, how the automobile was invented, and how it has evolved over the course of a century.

Illustrated text and photographs describe the development of communication including the Pony Express, telegraph, and the various styles of telephones since its invention in the 1870s.