A study found that informing people about health risks linked to climate change is more effective in spurring public support for government-led climate action than messages focused on economic or environmental impacts. Over 80% of participants in a survey across Brazil, India, Japan, and South Africa expressed concern about climate change impacts and backed government measures to prevent public health impacts. The World Health Organization stated that humanitarian emergencies are increasing worldwide due to human-caused rising temperatures, with over a third of the global population exposed to climate threats. Communicating these risks to the public can inspire climate action, as health is a universal concern. Despite pledges to strengthen policies to cut carbon emissions and improve health sector resilience to climate impacts, health has not been a top priority at key climate meetings. Different countries had varying reactions to climate change messaging, with South Africans concerned about children's health and food/water insecurity, Brazilians focused on mental health impacts, and Japanese prioritizing extreme heat. In India, air pollution and access to healthcare were top concerns. Respondents across countries supported government action to address health impacts of climate change, with measures like building solar capacity and investing in air-conditioned public buildings being popular. Experts emphasized the urgency of implementing climate action to protect human health, calling for declaring climate change a global health emergency and scaling up climate-health investment. The article section discusses the importance of climate action as a high-return investment for a more just and resilient society. The Wellcome Trust's survey shows that the public supports stronger action on climate change, with a focus on health being an effective way to engage new audiences. The health angle is seen as a fresh approach to climate dialogue, as it is personal, relevant, and depolarizing. While economic messages still have a purpose, health messaging could be a "missing piece" in climate communications, providing a new way to talk about climate change that feels very relevant to people.