Presents a short study of the planet Neptune, and provides scientific facts as to its size and distance from the earth, what it is made of, when it was first discovered, and other interesting details about the planet.
Presents an introduction to green sea turtles, providing information on their physical characteristics, habitat, life cycle, behavior, and endangered status.
Profiles the life and work of inventor J. Robert Oppenheimer, describing his education and career as a physicist and his role as director of the Manhattan Project, as well as his personal life. Includes activities and related Web sites.
Presents information on snow leopards, discusses their habitat, threats to their survival, and efforts to save the species, and includes Web site links throughout.
Presents true accounts of five historic mountain rescues from the Great Northern Railway Rescue to the dangerous rescue of Beck Weathers on Mount Everest. Includes a glossary and sources of more information.
Contains letters, diary excerpts, newspaper accounts, songs, and other primary source documents that provide insights into World War I, and includes addresses for Internet resources.
