Participatory science communication featured in several sessions and individual papers at the 2021 online conference of the Public Communication of Science and Technology (PCST) Network. This coverage recognises the drive away from linear communication to more participatory forms of science communication. In this special edition we present practice insights, papers and essays that explore participatory science communication. These contributions explore definitions, processes and describe case-studies of participatory science communication which involve a variety of publics, from young school students to Indigenous groups to farmers. In this introductory editorial we reflect on the papers, describe the growth of a participatory approach as part of the continuing evolution of science communication; explore a definition for participatory science communication; and consider some of the key concepts and issues that emerged.

This study provides a practice insight into campus/community co-farming as a communication experience connecting civic participants and experts in exploring the potential applications of smart agriculture. The observation focuses on participants' perceptions of smart-agri practices. The objectives of smart-agri practices have been identified to reduce negative environmental impact and meet local challenges; their development corresponds to the civic value-driven experience of promoting sustainable agriculture with low-risk, trackable information. Relatively few studies on smart-agri communication have engaged with the non-expert level. The findings highlight a viable participatory communication form of problem-solving, the public's trust of expertise, and a vision for inclusive socio-economic applications of smart agriculture.

In this practice insight, an art-based, participatory intervention (#finaltrashtination) is presented as higher education assignment in environmental and climate change communication. The project #finaltrashtination made dominant environmentally destructive ways of wasting visible and stimulated students to take responsibility, advocacy and authorship for transformation. Beyond the one-day eco-culture jam, the project engaged the wider public through conversations about a specific environmental problem. Thus, the project shows how conversational problematization and sensemaking around scientific facts can be initiated by using eco-culture jams promoting very unsettling moments of reflection.

In this “practice insight” we present a series of experiences run by Association Traces, injecting participatory approaches into science engagement activities by valuing the knowledge of the public rather than focusing on their ignorance. Starting from the observation that a sort of hybridization is occurring between cultural activities and public engagement with science on one side, and co-creation and participatory activities on the other, we provide some insight on the features of each approach. Examples are then used to highlight the potential value of this hybridization: as a way of making participatory activity more recognizable and accessible to a wide audience; to ensure that scientists have a professional interest in engaging in the communication activity; to raise a sense of ownership and empowerment in the audience, etc. These examples will eventually show that participation may lead to science communication practices that are socially-inclusive and/or productive for research, and ideally both.

This essay approaches the question: ‘What does participatory science communication for transformation mean in Colombia?’ The answer comes from an examination of the public policy instruments that have promoted participatory scientific communication through the concept of social appropriation of science, technology, and innovation (STI). In the gaze of these public policy instruments, it is evident how the social appropriation of STI has been intended as a means of transformation.

Building a strong and trustworthy communication network to report unusual signs of disease will facilitate Australia's response to a foot and mouth disease (FMD) outbreak. In a four-year study, the FMD Ready Farmer-led surveillance project adopted the Agricultural Innovation Systems (AIS) framework, modelling transformation of how knowledge is co-created, valued, and communicated. The FMD Ready project has highlighted the need for multiple stakeholders' voices to be heard, and the importance of regulatory bodies to listen. Relationships take time and need to be valued as a necessary tool in a participatory, innovative approach to animal health and disease management.

Participatory media has the ability to engage people in stories of science in ways that are personal, profound and culturally relevant. This essay launches from my experience as a scientist-turned-filmmaker and my establishment of the Ocean Media Institute, a global media collective that serves as a participatory platform for the communication of ocean science. Through collaboration and innovation, we as science storytellers have the ability to shape narratives that are factual, evidence-based and embrace greater inclusivity. Only when we invite diverse perspectives that draw from all ways of knowing, will we be able to provoke deeper dialogue and ignite change.

The language of science communication has moved from deficit to dialogue and talk of a ‘new social contract’ with the public ‘invited to participate’. This paper outlines a practitioner path that begins with storytelling and moves to a more participatory mode of practice of science communication for adaptation to climate change at the community scale. I outline personal practitioner reflections, specifically the need to consider issues of power, place, pain and the need to challenge assumptions. I propose the need to consider context, many forms of local knowledge and expertise, social learning, plus the pain of historical, contemporary or projected loss.

Justin Gest's book “Mass appeal. Communicating policy ideas in multiple media” illustrates how to communicate research effectively. He offers insights into different mediums and provides practical examples of each. While the author has a background in policy research, his ideas and insight are of interest to a much broader audience with an interest in science communication.

Citizen science opens the scientific knowledge production process to societal actors. In this novel collaboration process, scientists and citizens alike face the challenge of new tasks and functions, eventually resulting in changing roles. Role theory provides a way of conceptualizing the roles that people take in communication and interaction. We use role theory to create a framework that identifies scientists' and citizens' tasks in citizen science projects, main aims of communication, spaces they interact in, and their roles — thus providing a structured way to capture communication and interaction in and about CS for further scientific reflection and practical application.