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.

This paper discusses three mediation concept approaches and, consequently, three facets of mediator action.  The approaches presented start with a bibliographical review of the concept of mediation present in education and scientific communication studies.  These approaches serve as a basis for interpreting a semi-directive interview with the director of the Museum of Morphological Sciences of the Federal University of Minas Gerais (UFMG).  They also help us reflect on the complexity of organizing the objectives of a museum action that takes into account the transformational role of the meaning of objects in interaction with different socio-cultural subjects.  In conclusion, the museum's purpose in organizing a museum action using socio-cultural mediation approach and with the mediator as a passeur libre among exhibit objects and visitors is highlighted.

This article seeks to reflect on mediation in museums based on experiences that occurred in the “Learning in order to Teach” Project.  In this case, the mediation acquires specific characteristics because it deals with young deaf people learning art-related contents in order to teach other youth in their first language.  The most interesting aspect of this encounter between museum and deaf culture is a mutual, immediate and highly visible influence.  While museum-goers and professionals understand that the “gestures” used by the deaf are not random (rather, on the contrary, they make up a complex language), new signs are created by the students based on the contents that are worked with and discovered in the museum.  These new signs thus enrich the language itself and begin to circulate within the community.

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).

Peer training provides Explainers with the knowledge, skills and confidence to facilitate high quality interactions with visitors. These are skills that carry into their academic, personal and professional lives. Explainers report better grades in school, improved communication skills and better understanding of diverse learning styles. By devoting this high level of time and attention to this valuable resource, we can truly see the significant influence the science center can have on this most valuable, and often underserved, museum audience.

Artists create new aesthetics to communicate new messages and new concerns. Apprehension about the climate, its changes, global warming and a disposition to anxiously running after an ideal sustainable development are part of the issues we all now experience with a certain degree of anxiety. This is why the sensitive antennae of artists have perceived and evolved that. Now they are committed on many fields to making their voice be heard and to raising ethical and social issues, also regarding the scientific instruments man possesses to manipulate nature. So they have now accessed the group of special interlocutors in the dialogue between science and society.

This article explores whether some scientists have now actually been developing a type of science apt to be published as a piece of news, yet lacking a relevant scientific interest. Possibly, behind this behaviour there may be the present working culture, in which scientists live under the pressure of the dictatorship of the Science Citation Index (SCI) of the reference journals. This hypothesis is supported by a study demonstrating that there is a direct relation between publishing scientific results in the press and a subsequent increase in the SCI index. Many cases are here described, selected among the papers published in Nature that – according to experts – have a media interest rather than a scientific one. Furthermore, the case of the Dolly sheep cloning is studied as a paradigm for a situation in which media coverage actually destroyed the research group.

In the globalisation era, arts have provided food for thought on “how latitudes became forms”, to stress again that now, at global level, one should no longer define art as a contemplation “space”, but as an “environment”, a place for experience. On the other hand, already when Bern saw the inauguration of the historic exhibition “When Attitudes became Forms” in 1969, people realised that the problem was lying in the behaviour, in the attitude, of making arts towards the world. Basically, the formalistic concept of self-referentiality in a work of art was to be overcome, and attention was to be paid to procedures and contexts. In search of a new humanism in contact with the natural universe.

Artists have used the environment as a subject forever and there is a long history of artists whose works affect peoples’ awareness of and perceptions of their natural environments. But only relatively recently have other artists become part of the modern environmental movement and of efforts to educate college students and the population at large about environmental issues. Environmental studies programs need to take advantage of this increased interest on the part of artists, and global warming provides a perfect vehicle.

Despite the developed world’s climate-controlled interiors and easy access to all kinds of fresh produce at any time of year, our lives are still dependent upon the weather and climate. With global warming, our dependence is becoming even more apparent. I am an artist working with new technologies and last year I had the opportunity to go to Antarctica for two months on a US National Science Foundation-sponsored residency where I worked alongside scientists studying the global implications of Antarctic weather and climate change. The Antarctic is unlike any other place on earth. There, I wanted to find a way to more closely engage with the issue of global climate change.