The goal of the annual UCPH Global Health Symposium is to highlight a global health emergency: The impact of extreme heat on public health due to climate change. In the next decade or so, heat is anticipated to emerge as one of the foremost consequences of climate change impacting public health. Although the deleterious effects of heat on health have been documented in different fields of study, we are still not adequately prepared to address this challenge on a global scale. The aim of this symposium is to bring together leading scientific experts and practitioners, young researchers, students, and the public to share and discuss the current state of research and practice globally, to promote transdisciplinary collaboration, and to identify steps needed to advance the field.