We analysed the representations of science and of scientists at Jornal Nacional, the main Brazilian TV news. We carried out content and frames analysis, besides the lexical and semantic analysis of the transcriptions of the science and technology stories. Our results show a narrative that highlights the novelties and the epopee of the scientific advance, mainly in the health field. But to the emotional palette feelings of combat, anxiety and triumph were added. The face of the scientist presented by the TV news is mainly masculine, suggesting a stereotyped role of the male and female scientist: meanwhile men go out to literally explore other worlds, women take care of health and of the body.

We analyse the science and technology news reports covered by the Jornal Nacional, the Brazilian newscast with the largest audience, which is broadcast at prime time on a free-to-air channel. The constructed week methodology was used to compose a sample of 72 newscasts, representative of an entire year (from April 2009 to March 2010): 77 science and technology news reports were thus identified, occupying an average of 7.3% of the newscast's daily broadcasting time, and therefore giving evidence that such matters belong on the JN's agenda. Content analysis has enabled us to observe the following: most reports were focused on announcing research results; the main fields dealt with were medical science and health; the coverage of national research projects ranked highest; researchers and scientific institutes represented the main sources of the news items; scientists were mostly shown in their offices, and as far as interviews are concerned female scientists were a minority. The approach to science was more positive than negative and controversial aspects were scarcely explored.

The Encyclopedia of Science and Technology Communication has approximately 300 entries on science communication and is capable of meeting the needs of readers of differing profiles. The entries cover eighteen categories, including controversial science topics and tendencies of media coverage; panoramas of science communication in different regions or continents; legal and ethical aspects; important science players; history, philosophy and sociology of science; theories and research on science communication, and many other topics. By concentrating different information about a field of research and of practical multidisciplinary actions in only one source, the publication serves as a reference for beginners in the area as well as for those who are more experienced in the area. Although conceptualized to serve as quick introductions to the concepts and practices of science communication, the entries are contextualized and each item is explored from various angles in simple language.