grand canyon (ariz.)

After discarding their infamous homework machine, four friends, now in sixth grade, find themselves once again at the police station, this time giving testimony about an incident involving a powerful computer chip, a Grand Canyon treasure, and a dead body.

A simple introduction to the Grand Canyon including its geological history.

An introduction to Grand Canyon National Park, discussing the history of Grand Canyon exploration, and looking at the canyon rims, interior, plants, animals, and people. Includes maps and photographs.

Presents the diary of the Civil War veteran who led an expedition down the Colorado River to explore the depths of the Grand Canyon.

Explores the Grand Canyon and how it formed, comparing it to other canyons in the world, and how pollution is threatening the ecosystem around the Grand Canyon.

Describes the geology, evolution, and beauty of the Grand Canyon by leading the reader down the Bright Angel Trail.

Provides comprehensive information on the geography, history, wildlife, peoples, and environmental issues of the Grand Canyon.

A biography of the geologist who first explored the Colorado River and the Grand Canyon.

Despite some reservations, sixteen-year-old Jessie joins her companions from the previous year's adventure on the Colorado River for a legal rafting trip through the Grand Canyon.

In a future world ravaged by a mutant virus, sixteen-year-old Ceej and three other teenagers seek to save the Grand Canyon from being flooded, while trying to avoid capture by a band of renegade Survivors.