Willard Frank Libby was an American physical chemist born on December 17, 1908, in Grand Valley, Colorado. He grew up near Sebastopol, California, and went on to study at the University of California, Berkeley, where he earned both his B.Sc. (1931) and Ph.D. (1933). After completing his doctorate, he joined Berkeley’s chemistry faculty, rising from instructor to associate professor over the next decade.

During World War II, Libby’s academic career was interrupted when he joined the Manhattan Project at Columbia University, contributing to research crucial to the development of nuclear technology. His earlier work had already included advances in radioactive isotope detection and gaseous diffusion methods for uranium enrichment; techniques that played a role in wartime nuclear efforts.

After the war, Libby continued his scientific career at the University of Chicago, where he made his most famous contribution: the development of radiocarbon dating. This ground-breaking method, based on measuring the decay of carbon‑14 in organic materials, revolutionised archaeology, geology, and numerous other fields by providing a reliable way to determine the age of ancient objects. For this achievement, he received the Nobel Prize in Chemistry in 1960, along with several other major scientific awards.

Libby later served on the U.S. Atomic Energy Commission, advocating for peaceful applications of nuclear science. He spent his final academic years at the University of California, Los Angeles. Willard Libby died on September 8, 1980, in Los Angeles, leaving behind a legacy as one of the most influential chemists of the 20th century.