Over the past decades there has been an increasing recognition of the need to promote dialogue between science and society. Often this takes the form of formal processes, such as citizen’s juries, that are designed to allow the public to contribute their views on particular scientific research areas. But there are also many less formal mechanisms that promote a dialogue between science and society. This editorial considers science festivals and citizen science in this context and argues that we need a greater understanding of the potential impacts of these projects on the individuals involved, both scientists and the public.

For the past thirty years, The National Institute of Higher Education, Research, Science and Technology (NIHERST), Trinidad and Tobago, has been a pioneering force in science popularization both locally and regionally. The biennial NIHERST Sci-TechKnoFest is the Caribbean’s premier science festival, having hosted seven large-scale events catering to tens of thousands of patrons each. This article provides an overview of the role of NIHERST at the national development level, an in-depth look at the content of Sci-TechKnoFest 2013, its impacts on visitors and the way forward for the festival.

Science festivals (or just “festivals”) are currently ascendant in the United States with more than 40 new initiatives emerging in just the past 5 years, but their story is not so easily told. The schedule of any one individual festival may contain a staggering array of events, and each festival is different both from year to year, and from other festivals. One multi-festival evaluation points to potential strengths of the format, as well as the importance of the participation of STEM practitioners. Collaboration and social identity formation are considered as powerful festival impacts, and potential challenges for festivals are discussed.

The cultural phenomenon of ‘science festivals’ is ever expanding throughout the world, as universities, city and regional governments, and science engagement professionals alike embrace the concept of a focused ‘celebration’ of science. In the past however science festivals have been criticized for neglecting underrepresented audiences. This special issue explores the extent to which current science festivals have managed to engage with diverse publics, and identifies the key challenges facing the future of science festivals, most notably the need for deeper research into the impacts of science festivals.

Scientists often cite discrepancy between scientific values and news values as a primary factor in poor quality science reporting. The goal of this study was to understand how news values including conflict and controversy affect science communicators’ evaluation of press releases containing quotes from outside expert sources. Results of an online survey experiment suggest science communicators find a climate science press release with an outside expert quote that introduces controversy to be more newsworthy. However, when a science communicator attributes relatively high importance to reliability of facts as a guiding principle in story selection, this preference for controversy is reversed.

The Internet is increasingly considered as a legitimate source of information on scientific and technological topics. Lay individuals are increasingly using Internet sources to find information about new technological developments, but scientific communities might have a limited understanding of the nature of this content. In this paper we examine the nature of the content of information about fusion energy on the Internet. By means of a content and thematic analysis of a sample of English-, Spanish- and Portuguese-language web documents, we analyze the structural characteristics of the webs, characterize the presentation of nuclear fusion, and study the associations to nuclear fission and the main benefits and risks associated to fusion technologies in the Web. Our findings indicate that the information about fusion on the Internet is produced by a variety of actors (including private users via blogs), that almost half of the sample provided relevant technical information about nuclear fusion, that the majority of the web documents provided a positive portrayal of fusion energy (as a clean, safe and powerful energy technology), and that nuclear fusion was generally presented as a potential solution to world energy problems, as a key scientific challenge and as a superior alternative to nuclear fission. We discuss the results in terms of the role of Internet in science communication.

There is growing competition among publicly funded scientific institutes and universities to attract staff, students, funding and research partners. As a result, there has been increased emphasis on science communication activities in research institutes over the past decade. But are institutes communicating science simply for the sake of improving the institute’s image? In this set of commentaries we explore the relationship between science communication and public relations (PR) activities, in an attempt to clarify what research institutes are actually doing. The overall opinion of the authors is that science communication activities are almost always a form of PR. The press release is still the most popular science communication and PR tool. There is however disagreement over the usefulness of the press release and whether or not gaining public attention is actually good for science.

Science communication as an interdisciplinary field of study has always been concerned with issues of knowledge utilisation. This theoretical paper focusses on the “knowledge” part of knowledge utilisation and provides a conceptual frame to distinguish between different types of knowledge in science-based practice. A practitioner’s knowledge store is portrayed as a dense set of personal knowledge, consisting of procedural knowledge, factual knowledge, potential factual knowledge and opinions/beliefs; the totality of which is continuously refined through more experiences and additional information received from people, documents or events. Implications for future studies of knowledge utilisation in science-based practices are highlighted and a number of questions posed to science communication as a profession.

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.

The PCST conference attracts a substantial number of science communication academics and practitioners from all over the world. The conference is stimulating and refreshing but the size of it means that quality control is challenging for the organisers. This review highlights areas of both strengths and weaknesses whilst also making recommendations to the PCST committee for PCST 2016. The committee are encouraged to further strengthen the academic/practitioner combination and the international nature of the event. However, they are also recommended to ensure that work presented is of high quality with clear purposes and strong evaluative evidence presented.