Health workers are already being transformed by climate change. COP29 stakeholders can either support this transformation to strengthen health systems, or risk watching the health workforce collapse under mounting pressures. The World Health Organization’s “COP29 Special Report on Climate Change and Health: Health is the Argument for Climate Action“ highlights the health sector’s role in climate action. Health professionals are eyewitnesses and first responders to climate impacts on people and communities firsthand – from escalating respiratory diseases to spreading infections and increasing humanitarian disasters. The report positions health workers as “trusted members of society” who are “uniquely positioned” to champion climate action. The context is stark: WHO projects a global shortage of 10 million health workers by 2030, with six million in climate-vulnerable sub-Saharan Africa. Meanwhile, our communities and healthcare systems already bear the costs of climate change through increasing disease burdens and system strain. Health workers are responding, because …