The World Bank and the Global Fund to Fight AIDS, Tuberculosis, and Malaria (the Global Fund) today signed a new Memorandum of Understanding (MoU) outlining how the two organizations will work together to strengthen health systems in countries of the Global South. The goal is to support more efficient, effective, and sustainable financing to improve health outcomes in the face of climate change. Latest estimates show that more than half of the global population is not fully covered by essential health services and the climate crisis will only increase the demand for effective services, especially for the most vulnerable people.