This book introduces scientists, health professionals, and engineers to principles of communicating with the public and to practical aspects of dealing with the press. Part I focuses on the advantages, principles, and problems of communicating with the public. Part II discusses the nature of science reporting and offers advice for presenting science through the mass media. Topics covered include: recognizing who reports on science; understanding how journalists select topics and prepare stories; problems in presenting science in the mass media; understanding why journalists do interviews; preparing for interviews; what to do during interviews; knowing how the media differ; working with public information offices; and what to do following interaction with journalists. Part III deals with presenting science directly to the public. Topics considered include: writing articles, publishing books, and broadcasting; selecting topics and gathering information (focusing on conducting and using interviews); effective science writing; book preparation; making oral presentations; and pursuing a career in science communication. Information provided will be of value to science, scientists, physicians, and other professionals who have already completed their training; to journalists and other communications professionals who deal with technical topics, and to students in science journalism and science and technical writing courses. (JN)