A study in South Africa shed light on a set of factors, specific to this country, that compel South African scientists towards public engagement. It highlights the importance of history, politics, culture and socio-economic conditions in influencing scientists' willingness to engage with lay audiences. These factors have largely been overlooked in studies of scientists' public communication behaviours.

This paper deals with the journalistic coverage of biologically active compounds presented as promising drugs in Brazil. The sample consists of 214 journalistic stories on 40 compounds published in two daily newspapers and a monthly science magazine from January 1990 to December 2016. After 27 years, although journalists and scientists had claimed that all compounds would become drugs in a few years, only two completed the evaluation tests and were approved for commercialisation. The paper provides a series of strategies to build a more analytical view on drug research and development.

Climate change is a global risk as its causes and effects are not limited to national borders, but the risks and the responsibility are not evenly spread [Beck, 2009]. Pakistan is facing especially severe impacts in the form of disasters, floods, droughts, rising temperatures, cyclones and rising sea levels due to global emissions, despite its national emissions being nominal and accounting for only 0.46% of worldwide emissions [World Bank, 2018]. Ironically, the level of public awareness of climate change is low in Pakistan compared to not only advanced countries, but also to other countries in the South Asian region [Zaheer and Colom, 2013]. A contributing factor behind this is the communication gap between the media and the broader public. This study aims to explore the factors responsible for the limited coverage of climate change in the news media, leading to confusion, uncertainty, denial and low levels of climate change awareness in Pakistan. Qualitative semi-structured interviews were conducted with media professionals and the findings show that political, economic, social, cultural, technological and scientific factors influence the news coverage of climate change issues.

The 10th World Conference of Science Journalists (San Francisco, U.S.A., 26–30 October 2017) was the most successful to date in terms of participants and probably the one with the largest presence of journalists from the developing world among its attendees and speakers. In agreement with the times, its themes were marked by ethical dilemmas in the communication of science, fake news and climate change, among others.

The National Autonomous University of Mexico (UNAM) is one of the world's single largest employers of science communicators, with over 350,000 students and 40,000 staff. Its science communication activities include five museums (Universum, Museo de la Luz, the Geology Museum, Museo de la Medicina Mexicana and Musem of Geophysics), botanical gardens, as well as a wide range of cultural and outreach activities. It has several programmes for training professional science communicators. The science communication staff are spread across the campuses in Mexico City and four other cities, including writers, explainers, researchers, evaluators, who produce exhibitions, magazines, books, theatre, screenings and science cafés. This activity is diverse and sometimes operates to different agendas.

Marked by the diversity of initiatives linking science and art and by new presentation formats, the 15th Congress of the Network for Popularisation of Science and Technology in Latin America and the Caribbean (RedPOP) saw heated debates on science, culture, politics and society. Between 21st and 25th August, it brought together in Buenos Aires (Argentina) about 400 participants from 14 countries in order to share new visions, initiatives and research work in science communication. During the event, which included a vast cultural programme, a series of challenges were raised for the future development of the field.

The research field of science communication is fairly neglected in South Africa. The university system in South Africa, with a few exceptions, pays scant attention to the teaching of science communication, leading to limited academic knowledge of this research field with its rich history and philosophical relations. This paper explores some of the reasons behind this neglect of science communication in South Africa and will argue and demonstrate that, primarily, two political systems can be identified as having had a profound impact on the lesser attention given to this research field; the ‘divide and rule’ system of British colonialism and the Afrikaner National Party ‘apartheid’ system of racial segregation.

Science communication is today a well-established ―although young― area of research. However, there are only a few books and papers analyzing how science communication has developed historically. Aiming to, in some way, contribute to filling this gap, JCOM organized this special issue on the History of Public Communication of Science and Technology (PCST), joining 15 contributions, from different parts of the globe. The papers published in this issue are organized in three groups, though with diffuse boundaries: geography, media, and discipline. The first group contains works that deal descriptively and critically with the development of PCST actions and either general or specific public policies for this area in specific countries. A second set of papers examines aspects of building science communication on TV or in print media. The third group of papers presents and discusses important PCST cases in specific areas of science or technology at various historical moments.

Research in the field of science communication started emerging about 50 years ago and has since then matured as a field of academic enquiry. Early findings about research-active authors and countries reveal that scholarly activity in the field has traditionally been dominated by male authors from English-speaking countries in the West. The current study is a systematic, bibliographic analysis of a full sample of research papers that were published in the three most prominent journals in the field from 1979 to 2016. The findings reveal that early inequities remain prevalent, but also that there are indications that recent increases in research outputs and trends in authorship patterns ― for example the growth in female authorship ― are beginning to correct some of these imbalances. Furthermore, the current study verifies earlier indications that science communication research is becoming increasingly institutionalised and internationalised, as demonstrated by an upward trend in papers reflecting cross-institutional collaboration and the diversity of countries where authors are based.

This issue sees the publication of several papers that contribute to our understanding of the challenges faced by researchers in communicating about their research, adding richness to our understanding of practices and policies in Zimbabwe as well as amongst non-Anglophone speakers working in Australia. The potential of incorporating documentary filmmaking tools and techniques into open science projects raises interesting questions about subjectivity, data and the collaboration skills needed for today's scientists.