(1945–2024) Helen Elizabeth Fisher, the biological anthropologist who defined the science of love, died from endometrial cancer at her home in New York City on August 17, 2024. She was 79. Dr. Fisher will be best remembered for her transformational research on love, romance, and sexual attraction, and for the multi-disciplinarity that defined her career. Fisher employed methods and findings from biological anthropology, evolutionary psychology, neuroscience, and related disciplines to contextualize and illuminate her own research on love in all its forms, attachment, adultery, divorce, and the evolution and future of human family life. She took the phenomenon of love—long dismissed as unscientific—and forged it into a legitimate domain of neuroscience. In so doing, Helen Fisher reconceptualized the convergences between biological anthropology, neuroscience, and human mating behavior. Previously, anthropology regarded attraction and pair-bonding largely as social constructs.…