Theoretical perspectives of science communication were initially driven by practice, which in turn have influenced practice and further science communication scholarship. The practice of science communication includes a variety of quite diverse roles. Likewise, the scholarship of science communication draws upon a mix of disciplines. I argue that the apparent messiness of science communication scholarship and practice is also its wealth. If blame can be avoided in developing and applying science communication models, and if the coexistence of all science communication models can be embraced then both the scholarship and practice of science communication is likely to be more effective.

Our 20th anniversary this year is a special milestone for JCOM. It is a time to reflect on our past performance and future prospects. We pause to consider the activities of this journal, and the broad field of science communication over the past 20 years.

What can we say about equity, diversity and inclusion in science communication research over the past 20 years? This is a thorny question because of course we want to be constructive, to recognise change and to respect those whose hard-won research on equity issues has meant so much to many of us. At the same time, it is impossible — given what we know through our research — not to take a critical stance. We critique the status quo of science communication research from a social justice perspective and reflect on how we might change, perhaps bringing what has been marginal (and indeed the marginalised) into the core of science communication research, practice and policy.

In this commentary, I reflect on twenty years of teaching science communication at universities in Australia, Singapore and New Zealand. I discuss many of the challenges and opportunities for people working in the field. Some of the professional teaching experiences, challenges, and lessons I have learned may resonate with colleagues or help newcomers navigate the complexities of academic landscapes.

The field of science communication goes by many names. This commentary explores the tensions between plain ‘‘science communication’’ and the more specific ‘‘public communication of science and technology’’. The commentary argues that science communication is not just one thing — and that’s okay.

In this commentary, we discuss the challenges associated with carrying out research in science communication in Latin America. We start with the ‘‘invisibility’’ of Latin American studies in the three most prominent international journals in the field (although there has been a growing number of studies in the region). Then, we look to the recent popularisation of science through social media, the political issues facing the region and the massive spread of disinformation and fake news, which has been widely accentuated by the pandemic. We argue that there is an urgent need but also opportunities for innovation and collaborative research in science communication. Finally, we call attention to how the present situation might lead to bigger gaps among researchers from the developing world, including Latin America, and the so-called developed world.

The argument that we live in times of great change is probably a common thread in the reflection on science communication in most historical phases and contexts. Have there ever been periods of continuity in science communication, in which actors and scholars did not have the perception of substantial transformations and required change? Or to put it more provocatively: have we ever been satisfied with science communication as it was? And if not, why so? One possible, and apparently paradoxical, conclusion is that the focus on change is itself an element of continuity in the history of science communication.

Anniversaries provide great opportunities to celebrate achievements, to look into the future, and to do some self-reflection. I have the honour of doing so in a specific field of science communication that I’m familiar with: the field of citizen science communication, especially with a European focus. I hope this commentary prompts others who are experts in their regions of the world to also reflect on the past and the future for this growing field.

The past 20 years of science communication have seen important progress towards inclusion, equity, and justice. In this commentary, I review some of those changes and discuss how culturally relevant science communication activities are part of a broad movement seeking to change the culture, research, and practice of science communication. I draw on my experiences as a practitioner working with the nonprofit organization Ciencia Puerto Rico (CienciaPR) to offer lessons for the whole field to continue to address past and present exclusions and injustices and avoid future ones.

Satire has long been used as a tool in social commentary and political communication, and in some cases this has extended to commentary about science and its role in policy. This is certainly the case for the recent Adam McKay film, ‘Don't look up’, where an allegorical story about a comet heading for Earth is used to satirise the current political and media response to the climate catastrophe. While the film succeeds in making its point, how the humour interacts with objectives of science communication highlights some risks of using satire where there's overlap between the subject of the satire and a potential audience for communication.