Peng Huang, an NPR Science Desk reporter, Erica Caffrey, a pediatric dentist, and Lynn Goldman, an epidemiologist and public health dean, explore the hotly debated topic of fluoride in American drinking water. They discuss its historical significance in reducing tooth decay and the recent resurgence of skepticism fueled by political figures. The conversation highlights the impact of fluoridation on dental health equity and the need for continued research, while also addressing misconceptions and the role of credible science in shaping public policy.