Neglected tropical diseases (NTDs) affect over one billion of the world's poorest people. More than 170,000 people die from NTDs each year, and many more suffer from blindness, disability, disfigurement, cognitive impairment, and stunted growth. Yet NTDs are treatable and preventable, and the annual cost of treatment is incredibly low. In Under the Big Tree, public health leader Ellen Agler and award-winning writer Mojie Crigler tell the moving stories of those struggling with these diseases and the life-saving work that can be-and has been-done to combat these NTDs. They introduce listeners to people from all walks of life-from car washers in Lake Victoria and surgeons on motorbikes to under-resourced local nongovernmental organizations (NGOs) and Big Pharma scientists-as they chronicle what has been called the largest public health program in the world. On the one hand, the solutions are simple: deliver medication to people who need it and leverage local systems to offer prevention, treatment, and education. On the other hand, solutions are complex: navigating local and national politics, delivering treatment to some of the most remote, vulnerable communities, and coordinating global and local donors, international NGOs, thousands of health workers, and millions of citizens.