This handbook reviews the extant literature on the most important issues in health and science journalism, with a focus on summarizing the relevant research and identifying key questions that are yet to be answered. It explores challenges and best practices in health and science reporting, formats and audiences, key topics such as climate change, pandemics and space science, and the ethics and political impacts of science and health journalist practice. With numerous international contributions, it provides a comprehensive overview of an emerging area of journalism studies and science communication.