Amelia Earhart’s disappearance in the summer of 1937 has remained one of aviation’s greatest mysteries for nearly 90 years. Since then, explorers and researchers have searched land, reef, lagoon, and deep ocean for any trace of the plane she flew with navigator Fred Noonan. One team has spent years looking west of Howland Island. Its newest lead comes from a strange place for a deep-ocean search: the airwaves. In 2020, the deep-sea exploration and historical research organization Nauticos procured and restored a radio system identical to the one that Earhart and Noonan used on their final flight: a Western Electric...