Sylvia Engdahl

When young Elana unexpectedly joins the team leaving the spaceship to study the planet Andrecia, she becomes an integral part of an adventure involving three very different civilizations, each one centered on the third planet from the star in its own solar system.

A young girl from an advanced civilization is sent as an observer to a planet whose people have not yet learned to control their use of atomic power.

"Lou Gehrig's Disease: Each volume in this timely series provides essential information on a disease or disorder (symptoms, causes, treatments, cures, etc.); presents the controversies surrounding causes, alternative treatments, and other issues"--

"Perspectives on Diseases and Disorders: Neurodegenerative Disorders: Each volume in this timely series provides essential information on a disease or disorder (symptoms, causes, treatments, cures, etc.); presents the controversies surrounding causes, alternative treatments, and other issues"--

This book provides essential information on dementia, and presents the controversies surrounding its causes, alternative treatments, and other issues.

From the Back Cover: How an event is remembered depends on the people who record it. The broadest possible understanding of history comes from exploring multiple perspectives: from different time periods, different cultures, different ideologies. The Perspectives on Modern World History series provides multiple views of momentous events in recent history. Using primary and secondary sources, each volume provides background information on a significant...

Essays debate the issue of online social networking on sites such as MySpace and Facebook, discussing how it is changing society, who uses the sites, and their use by teens and children both at home and in schools and libraries.

Discusses the social and cultural forces that lead to Prohibition, the unintended consequences of the Eighteenth Amendment, the passage of the Twenty-first Amendment, and connections to the War on Drugs.