Cobb, Allan B

Examines the development of weather satellites that provide continuous real time weather observations and the improvements in forecasting that resulted.

Uses graphic organizers to understand the complex relationships that form among plants, animals, and the environment.

Provides an introduction to the history of drugs in the U.S., explains what heroin is, how it is used, who uses the drug, and how it affects the body, and discusses addiction, withdrawal, detox, and treatment.

Explains what scientifically engineered foods are, describes the possibilities genetic engineering offers, and discusses related controversies.

Discusses the nature, effects, and dangers of the drug methamphetamine, commonly known as speed, and describes the treatment for addiction.

Discusses the illegal use of heroin as a narcotic, describing how it is taken and its physical effects on the body, especially on the veins.

Discusses the nature, effects, and dangers of the drug methamphetamine, commonly known as speed, as well as treatment for addiction to it.

Presents nearly three hundred alphabetized, cross-referenced articles on animal biology, ecology, and behavior, as well as interactions between animals and humans, including biographical entries and providing color photos, informative sidebars, word definitions in page margins, and bibliographies.

Introduces basic principles of light and optics through hands-on activities and experiments.

Introduces the fundamentals of energy and motion through hands-on experiments and activities.