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.

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.

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.

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.

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.

‘Don't Look Up’ makes no direct reference to climate change, yet functions as a climate communication film, satirising political and societal responses to the scientific evidence of climate change and to the lack of concerted global climate action. As a popular cultural story of climate inaction, ‘Don't Look Up’ importantly critiques existing values of late-capitalism in the form of speculative techno-fixes, extractive capitalism and celebrity commodity culture. Yet as a mainstream Hollywood film, it privileges global north perspectives. More diverse stories that go beyond apocalyptic imageries are required to more clearly centre climate justice within popular cultural imaginaries.

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.

The film ‘Don't look up’ engages a woman science advisor, historically a very male-dominated role. Because the character of woman scientist Kate Dibiasky (Jennifer Lawrence) cannot be easily transformed into a commodity, she is side-lined as a scientific voice as she attempts to warn Earth of the coming apocalypse. For marginalised scientists, their value depends on how their identity markers are used. ‘Don't look up’ is a satire of audience apathy, corporate greed, and media manipulation but still offers a very nihilistic vision of the impact of scientists and their expertise.

In December 2021, Netflix released a comedy feature film, ‘Don't Look Up’. The film follows two scientists who discover an extinction-level comet heading for Earth, which they then attempt to warn humanity about. The makers of the film have publicly stated that the film is meant as a satirical metaphor for the response to the climate emergency. The film presents representations of science, scientists, and science communication. In this set of commentaries, experts have been selected to explore these representations and the lessons the film presents for using satire in science communication.