Human health has currently to face a growing series of global issues. From the spread of HIV/AIDS to a fresh outbreak of tuberculosis, increasingly drug-resistant, the world is witnessing a return, mostly unexpected, of infectious diseases. At the same time, the economic growth in many regions of the globe is generating a sort of “epidemics of wellbeing diseases”: obesity, diabetes, heart disease.

The knowledge deficit model with regard to the public has been severely criticized in the sociology of the public perception of science. However, when dealing with public decisions regarding scientific matters, political and scientific institutions insist on defending the deficit model. The idea that only certified experts, or those with vast experience, should have the right to participate in decisions can bring about problems for the future of democracies. Through a type of "topography of ideas", in which some concepts from the social studies of science are used in order to think about these problems, and through the case study of public participation in the elaboration of the proposal of discounts in the fees charged for rural water use in Brazil, we will try to point out an alternative to the deficit model. This alternative includes a "minimum comprehension" of the scientific matters involved in the decision on the part of the participants, using criteria judged by the public itself.

In a refereed journal in the food and agriculture sector, papers were tracked over a five-year period during the introduction of electronic submissions. Papers originated in the Americas and Pacific region and were processed in Canada. Acceptance times for revised papers were reduced (P < 0.001) to 59% of the original, from 156.5 ± 69.1 days to 92.8 ± 57.5 days. But the start of electronic submission coincided with a change in the geographical origin of papers, with papers from Anglophone countries changing from a 61% majority to a 42% minority. It is possible that submissions from non-Anglophone sources were facilitated, thus creating challenges to the traditional Anglophone reviewer population.

In 2008 two collections were published: the Handbook of Public Communication of Science and Technology, edited by Massimiano Bucchi and Brian Trench, and Communicating Science in Social Contexts: New models, new practices, edited by Donghong Cheng and five other scholars from China, Canada, Belgium and Australia. These books try to define and draw the boundaries of science communication’s field from both a theoretical and empirical point of view. But do we need to establish it as a distinct research field? For a number of decades, a growing community of scholars and communicators is trying to reply positively to this question, but the need to look outside the disciplinary boundaries, to other academic fields, is still vital.

The importance the Brazilian government has given in the last few years to the dissemination of science points out the necessity of a more discerning analysis about the establishment of this subject on the public agenda and the related public policies undertaken. This work tries to contribute to the debate as an inquiry about the policies to popularize and disseminate Science and Technology (S&T) established by the Science and Technology Popularization and Dissemination Department, which was created in 2004. In order to do so, theoretical references from Public Policy Analysis, the Studies of Science, Technology and Society (SSTS), and Public Communication of Science are used. Furthermore, we analyze some of the results from research on Science and Technology Understanding carried out in Brazil in 2006. As a final point, this associated approach aims at identifying some of the limiting factors related to science dissemination actions in Brazil.

The initiatives focusing the professional development of explainers are multiplying around the world, building an informal network of researchers, museums managers and directors, explainers, and regional/continental networks, as THE group, the Thematic Human Interface and Explainers group of Ecsite.The Workshop Sul-Americano de Mediação em Museus e Centros de Ciência e Escola de Mediação em Museus e Centros de Ciência, which took place in Rio de Janeiro in September 2008, was a further important step along this path. We believe it is worthwhile to offer to Jcom readers some of the workshop contributions concerning the training of explainers, to which we added an overview of the general problem presented by Lynn Uyen Tran (Lawrence Hall of Science at the University of California, Berkeley).

The educational function of science museums was born with the first naturalistic collections ever, flourished in 16th-century Italy. The pedagogic thought and the educational experimentations carried out in approximately five century of history have allowed the educational mission of museums to acquire many different facets, drawing a task having an increasingly higher and complex social value. Recent publications explore these new meanings of an old role.

Oficina Desafio, Challenge Workshop, is a project of UNICAMP Exploratory Science Museum – the Science Center of the State University of Campinas (Brazil). It is an outreach project, consisting of a fully - equipped mobile workshop constructed on a truck, which visits schools and gives the students open solution real problems challenging them to “design, construct and operate a device” capable of solving the challenge. Analysis of the evaluation forms answered by school students reveals that participants of the challenges perceive it as a “learning opportunity”, in the sense they identify school related capabilities as conditions that increase the chance of facing the challenges successfully.

Global changes such as urbanisation, new ways of travelling, new information and communication technologies are causing radical changes in the relationships between human beings and the environment we are both a part of and depend on. Relationships which – according to a multiplicity of researches in various fields – are crucially important. Science education and the language of science risk exacerbating a tendency towards objectifying nature and inhabiting a virtual reality, thereby rendering ever more tenuous the dialogue between people and the natural world. This article examines two approaches to science and language – as products or as processes – and suggests how awareness of the dynamic relationship between language and knowledge can help restore that vital dialogue.

Martin W. Bauer is right, two evolutionary processes are under way. These are quite significant and, in some way, they converge into public science communication: a deep evolution of discourse is unfolding, along with an even deeper change of the public understanding of science.