The eighth convention of the PCST (Public Communication of Science and Technology) network, which took place in Barcelona this June, emphasised an increasing richness in reflection and practice with regard to several themes to do with science communication. This growing variety mirrors the different approaches gradually coming about in different cultural and geographical contexts. In particular, the Focus of this issue of JCOM concentrates on a presentation of the models of interpretation of science communication referring to the Mediterranean and South American cultural area.

In a beautiful Barcelona, bathed in sun, the 8th PCST Congress was celebrated at the beginning of June.1 Besides the magnificent location of this year, there are several other reasons to commemorate the event. The first reason is that the community of professionals and scholars interested in Public Communication of Science and Technology (science journalists and writers, scientists, sociologists, teachers, historians, science museum curators, etc.) is growing quickly.

Never have there been so much science and so much technology on so many sides as now. The expansion of scientific information in the social sphere is frankly impressive. In newspapers and movies, on television and radio, scientific ideas circulate freely every day of the week. Science is in cell phones, shampoo, compact discs, Olympic athletes' clothing, food, perfumes, and in so many places that trying to enumerate them would be insane. After all, why should it be particularly strange to speak of science and technology if scientific thought finally molds our deepest fibers? Today's society, developed or not, lives immersed in a scientific and technological culture which guides the course of the most fundamental events. Even though, of course, the common sense obliges us to admit that the majority of us are not fully conscious of its reach and consequences. Perhaps this helps to understand why we still feel a certain shame when, in a social gathering, we comment that our profession consists of spreading science or analyzing the ways in which it circulates and its repercussions in the public opinion. It may be that we live with the fear that someone will look at us strangely and with disbelief and ask us to explain what scientific communication or the social studies of science consist of or, worse yet, that we find ourselves in the embarrassing situation of rehearsing an answer to justify the importance of thinking about science in daily life.

The aim of the present research is to study the "collective imaginary" produced by the articles within scientific circulation, in order to understand the perception of science that is shaping among the public. It is meant to identify, based on the theoretical background of cognitive science and on a epistemological perspective, the cognitive maps that drive the analysis and the interpretation of scientific knowledge, in order to let the global sense built by single individuals' cognitions and interpretative acts arise; their paradigms of reference and the scientific imaginary being subtended. The results from this analysis have proven how important the role of collective scientific imaginary can be in a "knowledgeable society". Twelve cognitive maps have been deduced, and they represent the epistemological outlines the articles refer to. They have highlighted an ongoing general transition from mechanicist and reductionist paradigms of reference to other olistic and systemic ones, as well as the new role that technology has attained within our society and its own imaginary. What comes out of all of this, is therefore an always-tighter need for collaboration and cooperation among all the disciplines concurring to the building of our society and our science.

In a brief article published by Science1 last October, British scientists stated that the expression "Public Understanding of Science" (PUS), which was traditionally employed in Anglosaxon societies to refer to the issue of the relationship between science, technology and society, is out-of-date. It should be replaced by "Public Engagement with Science and Technology" (PEST), a new acronym that clearly invites to reconceptualise the relationship between science and the public. The new approach involves the engagement of the public or rather the publics of science, through dialogue, in particular through an open and equal-to-equal discussion between scientists and non-experts that would enable non-experts to become the actual protagonists in the scientific decisions producing social effects.

What may be defined as the "standard model" of the public communication of science began to develop in the second half of the nineteenth century, gained a clear structure (especially in an Anglo-Saxon context) in the first three decades of the twentieth century and dominated until the nineties. Roughly speaking, the model tends to describe science as a compact social (and epistemic) corpus, largely separated from the rest of society by a type of semipermeable membrane. That is, information and actions can flow freely from science to the rest of society (through the application of technologies and the spread of scientific culture, for instance), but much more limitedly in the opposite direction (through science politics or the influence of sociocultural events on science itself).