Parker, Janice

Provides answers to questions about the science behind crime investigation and includes information about crime-fighting careers, and a related experiment.

Examines machines, from those found in the household like refrigerators, microwaves, and computers, to machines found in industry including engines, generators, and more. Provides information on the health, safety, convenience, consumer, and industrial applications of these machines.

Examines weather patterns, storms, and forecasting. Additional information is provided on how to measure the temperature and how to prevent overexposure from the sun.

"Forests have been called the lungs of the world. They produce most of Earth's oxygen. Forests also prevent erosion and provide homes for countless plant and animal species. Many of the world's forests, however, are disappearing"--P. [4] of cover.

Examines how the science of weather touches and shapes our daily lives. Includes colorful images and hands-on activities.

Photographs and text introduce readers to the people, history, geography, culture, and industries of California, featuring maps, a time line, census information, and brief profiles of key individuals, and describing the climate, natural resources, early settlers, sports, animals, tourism, and related topics.

Discusses the development of various means of communication, from the printed word through telegraph and telephone to radio, television, and computers, examining the technology that has made communicating easier.