An Impact book

Describes the volcanic eruption of Mount St. Helens, and the close scientific monitoring concerned with recurrence, ecological impact, and weather changes.

Discusses the meanings of our body motions and facial expressions.

Discusses the functions and production of hormones, substances the body manufactures to regulate its vital functions.

Describes the world's most recent earthquakes and volcanic activity, the causes, and the studies scientists have made in predicting them.

Traces the history of the development of the artificial heart, including experimentation with animal and human heart transplants, and discusses the psychological and ethical issues surrounding their use.

Discusses the role of forensic medicine in the solution of crimes and describes the jobs of various experts involved in this process.

Examines the problems of illegal adoption and surrogate motherhood and the tragedies which often result from them. Offers solutions to the ethical and legal dilemmas caused by this form of commerce.

Discusses the characteristics of one of the most rapidly increasing sexually transmitted diseases and describes its symptoms and effects. Also provides some suggestions for curbing its spread.

An introduction to the science that is concerned with providing new parts for the human body, such as artificial limbs, organs, senses, and even intelligence.

Examines the causes and consequences of use of alcohol by teenagers, problems of teenage alcoholism, and sources of help.