From advertisements to individual conversations with doctors, from academic journals to comics to video games, from lab notes to Instagram to TikTok, communication plays a fundamental role. This course is devoted to developing an understanding of the prevalence, challenges, significance, and applications of communication in science, health, and environment. We will explore theories, models, contexts, perspectives, research findings, and “real world” experiences in areas such as media portrayals, public opinion, health disparities, science literacy, journalism, marketing, museums, social movements, and citizen science.