From 1 to 3 June 2006, the 5th STEP Meeting devoted to the “Popularisation of Science and Technology in the European Periphery” was held in the city of Mahon in the island of Minorca (Spain). STEP ("Science and Technology in the European Periphery" [http://www.cc.uoa.gr/step/]) was founded in Barcelona in 1999, and gathers around hundred historians of science from all over Europe with a special interest in the role of Science and Technology in countries that traditionally have not played a leading role in the advancement of science and technology. The main results of the 5th STEP meeting are presented in this paper.

Before analysing the role of the mediators in relation to scientific education, I deem it important to provide a short overview on how scientific museums evolved from the early curiosity cabinets to the modern web cast. Although the term “museum” is no longer adapted to the new structures employed for the diffusion of scientific and technical culture, the evolution of the means of presentation has indeed led to several forms of human mediation. This is of course the main topic we are going to take into consideration today, as it is an important element for the impact our exhibitions may have on the public. Decisions and choices vary from structure to structure for reasons that are sometimes justifiable but that are more often than not economic in nature, since wages, which are in any case very high no matter which country plays host, come to bear heavily especially on the budget of small and medium-sized structures.

In this paper I use the concepts “understanding of science” and “appreciation of science” to analyze selected case studies of current science communication in Denmark. The Danish science communication system has many similarities with science communication in other countries: the increasing political and scientific interest in science communication, the co-existence of many different kinds of science communication, and the multiple uses of the concepts of understanding vs. appreciation of science. I stress the international aspects of science communication, the national politico-scientific context as well as more local contexts as equally important conditions for understanding current Danish science communication.

A review of two books recently published by Vieira & Lent, by the Casa da Ciência (House of Science) and by the Oswaldo Cruz Museu da Vida (Life Museum, Cruz/Fiocruz), "O Pequeno Cientista Amador – a divulgação científica e o público infantil", and "Terra Incógnita – a interface entre ciência e público" ("The Young Amateur Scientist - scientific divulgation and the youthful public", and "Unknown Land – the interface between science and the public") is presented.

The tsunami that took place on 26th December 2004 in the Indian Ocean and hurricane Katrina, that last August struck the Mexican Gulf, are two recent natural events that turned into catastrophes for mankind, causing several thousands victims. One of the reasons behind this can be traced back to the fact that useful information in the hands of scientists and experts did not reach the right people within the right time. A crushing defeat for risk communication was witnessed in these two recent events. All the more paradoxical since we live in what we like to name “the era of communication and information”.

From exhibitions to theatrical performances, from fireworks to video games, countless events and ventures have been held all over the world in 2005 to mark the occasion of the World Year of Physics (WYP2005). The year that is drawing to a close has brought physics out into the streets and University campuses, but in a few cases physics has even invaded theater stages and art museums, it has involved musicians and even architects. The worldwide objective was to highlight a science that has more and more need to communicate its close connections with society, its involvement in themes that are vital for the present day but above all for the future, like the frontiers of medicine, the reduction of global pollution and the search for new energy sources. This focus tries to discover, country by country, the events that have accompanied the World Year of Physics. But this will also be an attempt to reply to a question on the very nature of this type of event: “do we really need it”? Is a World Year of Physics really necessary and, above all, is it effective?

During the last annual conference of ECSITE (European Collaborative for Science and Technology Exhibitions; Helsinki, June 2005), for the first time two discussion sessions were devoted to explainers, the innumerable people – young students mainly – who welcome visitors at exhibitions, museums and festivals, who animate laboratories and science shows, who guide, explain and lately also stimulate and manage discussions and participatory procedures. Thanks to the involvement of the speakers, who agreed to submit a broadened version of their papers, JCOM is glad to host the proceedings of these meetings. A great deal has to be done yet in order to analyse the complex European context and to fully understand the explainer’s professional profile.

Few research studies have been conducted on the interpreter’s role in a Science Centre. Although the importance of this role is always stressed by museum practitioners, it seems that anecdotal evidence is the main source of information on this theme. The experience of a visitor in a Science Centre as well as in other museums has, among other things, well defined social dimensions. These dimensions are crucial in determining the quality and enjoyment of a visitor’s experience. There is evidence that suggests visitors go to a museum to meet others. Among the people that visitors meet in a Science Centre are interpreters, who help them not only to use and understand the exhibits but also to become familiar with a new environment. The following sections will illustrate what research studies say about interpreters, considering their twofold relation with visitors and exhibit developers.

Hiša Eksperimentov (The House of Experiments) is a very small science centre. We are situated in the centre of Ljubljana, the capital of Slovenia. The gross area of the centre is only 500 square meters and we meet around 25,000 visitors per year. We were opened for the public in the year 2000. In the Hiša Eksperimentov there are four full-time employees and around 10 persons working and paid by fees. There are specific institutions present in Slovenia so called Student services. They help students in finding paid job on daily basis. The state still encourages students to work by lowering the taxes for their job. There are around 25 students working as explainers in Hiša. Here are some facts about Slovenia. The population is around 2 million in the area of 20,256 square kilometers. There are 18 students per 1000 inhabitants. One can play a game with numbers – taking into account the area of Hiša and the population and area of Slovenia one can calculate that there is one person expected in an area of the size of 20 science centers. And there are even much fewer students present in the same area. But the number of visitors and students working in the center proves the density is larger. Therefore science centers do concentrate the population!

Techniquest was established in 1986, and in 1995 moved to its current premises at Cardiff Bay, South Wales. This was the first purpose-built science centre in the UK. It receives around 200,000 visitors every year to its exhibition, and to its programmes for schools and public audiences in the theatre, laboratory, discovery room and planetarium. The author joined the Techniquest project in 1985, became a staff member in 1990 and was the Chief Executive from 1997 until his retirement in 2004. Techniquest has three “out-stations” in Wales, and is responsible for the supply and maintenance of exhibits to the Look Out Discovery Centre in Bracknell, England. There is a Techniquest gallery at the Lisbon Pavilhão do Conhecimento - Ciência Viva, and a traveling exhibition, SciQuest, in South Africa which was also supplied by Techniquest. All these centres rely on the effective intervention of “Explainers” (at Techniquest we call them “Helpers”) to provide the best possible experience for visitors. At its most demanding, the tasks of an Explainer are varied and intensive, yet there may be times when the duties are mundane or even dull. When you rely on people to act as both hosts and housekeepers, to provide both support and stimulus, and to be both welcoming and watchful, you are asking a great deal. This article raises some of the issues concerned with the recruitment and retention of Explainers, their training and management, and the way in which their role is recognized and valued by the science centre as a whole.