Cobb, Allan B

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.

Examines the history of the study of stars, and looks at what scientists have discovered about the sun and other stars from the color and intensity of the light they emit.

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.

Explores the various chemical and physical changes on the Earth, describing how the atmosphere, hydrosphere, lithosphere, and biosphere interact with one another.

Presents science projects that demonstrate facts about oceans, including the water cycle, buoyancy, density, pressure, depth, waves, and tides.

Introduces the concepts of behavioral and structural adaptations in animals through hands-on investigations and other projects.

Offers teens an overview of migraines and headaches, explaining their causes, symptoms, treatment options, and impact on daily life.

Examines some of the latest developments in the replacement of damaged human organs and other body parts with artificial or biological materials.

An introduction to cadmium, a soft, metal element, discussing its special characteristics, where it is found in nature, how it is produced, and how it is used, and including a look at the periodic table.