José Sixto-García is Professor of Journalism at the Department of Communication Sciences of the University of Santiago de Compostela (Spain). He has a PhD in Communication and Journalism. He was the Director of the Social Media Institute (2013-2019), and his research is focused on new media, new narratives and social networks.Sara Pérez-Seijo has a Ph.D. in Communication, is Assistant Professor at the Universidade de Santiago de Compostela (Spain) and a member of Novos Medios research group. She was a visiting scholar at Universidade Nova de Lisboa. EUniWell's Communications Manager at the Universidade de Santiago de Compostela and Section Editor at Profesional de la Información.Berta García-Orosa is Full Professor at the University of Santiago de Compostela (Spain). She holds a B.A. in Communication Sciences, a B.A. in Political and Administration Sciences and a PhD in Communication Sciences from the University of Santiago de Compostela. She has studied communication and politics for more than 20 years, collaborated in more than 50 research projects and published over 100 articles and chapters

• Foreword1. An introduction to radon gas and risk communicationPart I. Radon: a public health issue2. Indoor radon as a public health problem. Available evidence on radon and its health effects3. Radon and citizen sciencePart II. Communicating public health4. Public health communication from digital native media5. Opportunities for information visualization in risk communication6. Health communication, awareness raising, and metaverse: an approach to the radon gas situation in SpainPart III. Public perception of risk7. When risk is invisible and at home: news coverage on radon gas in local media8. Public Perception and Treatment of Risk Communication in Latin America9. Media coverage of risk and expert opinion10. Conclusions: deductions on health communication in the current media scene and challenges for the future

José Sixto-García is Professor of Journalism at the Department of Communication Sciences of the University of Santiago de Compostela (Spain). He has a PhD in Communication and Journalism. He was the Director of the Social Media Institute (2013-2019), and his research is focused on new media, new narratives and social networks.Sara Pérez-Seijo has a Ph.D. in Communication, is Assistant Professor at the Universidade de Santiago de Compostela (Spain) and a member of Novos Medios research group. She was a visiting scholar at Universidade Nova de Lisboa. EUniWell's Communications Manager at the Universidade de Santiago de Compostela and Section Editor at Profesional de la Información.Berta García-Orosa is Full Professor at the University of Santiago de Compostela (Spain). She holds a B.A. in Communication Sciences, a B.A. in Political and Administration Sciences and a PhD in Communication Sciences from the University of Santiago de Compostela. She has studied communication and politics for more than 20 years, collaborated in more than 50 research projects and published over 100 articles and chapters

• Foreword1. An introduction to radon gas and risk communicationPart I. Radon: a public health issue2. Indoor radon as a public health problem. Available evidence on radon and its health effects3. Radon and citizen sciencePart II. Communicating public health4. Public health communication from digital native media5. Opportunities for information visualization in risk communication6. Health communication, awareness raising, and metaverse: an approach to the radon gas situation in SpainPart III. Public perception of risk7. When risk is invisible and at home: news coverage on radon gas in local media8. Public Perception and Treatment of Risk Communication in Latin America9. Media coverage of risk and expert opinion10. Conclusions: deductions on health communication in the current media scene and challenges for the future

José Sixto-García is Professor of Journalism at the Department of Communication Sciences of the University of Santiago de Compostela (Spain). He has a PhD in Communication and Journalism. He was the Director of the Social Media Institute (2013-2019), and his research is focused on new media, new narratives and social networks.Sara Pérez-Seijo has a Ph.D. in Communication, is Assistant Professor at the Universidade de Santiago de Compostela (Spain) and a member of Novos Medios research group. She was a visiting scholar at Universidade Nova de Lisboa. EUniWell's Communications Manager at the Universidade de Santiago de Compostela and Section Editor at Profesional de la Información.Berta García-Orosa is Full Professor at the University of Santiago de Compostela (Spain). She holds a B.A. in Communication Sciences, a B.A. in Political and Administration Sciences and a PhD in Communication Sciences from the University of Santiago de Compostela. She has studied communication and politics for more than 20 years, collaborated in more than 50 research projects and published over 100 articles and chapters

• Foreword1. An introduction to radon gas and risk communicationPart I. Radon: a public health issue2. Indoor radon as a public health problem. Available evidence on radon and its health effects3. Radon and citizen sciencePart II. Communicating public health4. Public health communication from digital native media5. Opportunities for information visualization in risk communication6. Health communication, awareness raising, and metaverse: an approach to the radon gas situation in SpainPart III. Public perception of risk7. When risk is invisible and at home: news coverage on radon gas in local media8. Public Perception and Treatment of Risk Communication in Latin America9. Media coverage of risk and expert opinion10. Conclusions: deductions on health communication in the current media scene and challenges for the future