The Girls in Science Health Alliance on Climate Change brings together the voices of youth, scientists, policymakers, health care professionals, and the international community to advocate for action to combat climate change in a fair and equitable way, emphasizing the substantial benefits to health. Members of the Girls in Science 4 SDGs International Platform are coming together to communicate with experts on the relationship between health and climate change and advocate to government and multi-stakeholders on investment in science-based solutions.