In this episode of AMSECast, Dr. Samantha Schrell explores the fascinating and often mysterious world of actinides—rare, radioactive elements with powerful applications in medicine, energy, space exploration, and national security. She explains what makes actinides unique, why they are difficult to study, and how elements like californium play a critical role in starting nuclear reactors and powering space missions. Dr. Schrell also discusses Oak Ridge National Laboratory's long-standing leadership in producing and researching heavy actinides through the High Flux Isotope Reactor. The conversation highlights the mission of the Glenn T. Seaborg Institute: building a pipeline of scientists and engineers trained to work in this highly specialized field. Through fellowships, collaboration across national labs, and cutting-edge research, the Institute is ensuring the future of actinide science. Ultimately, the episode reveals how curiosity, expertise, and education drive innovation at the atomic edge.