Donald Johanson

In 1974, Donald Johanson discovered a 3.2-million-year-old Australopithecus afarensis skeleton in the Awash Valley of Ethiopia. He famously named the specimen 'Lucy' after the Beatles song 'Lucy in the Sky with Diamonds,' which was playing in the camp. It was the most complete early hominid fossil found up to that point.

Johanson found Lucy at the Hadar paleoanthropological site, specifically locality 288, in the Afar Triangle region of Ethiopia. The area is known for its rich deposits of Pliocene-era fossils. He made the discovery alongside his graduate student Tom Gray while surveying the hot, dusty terrain.

In 1981, Donald Johanson founded the Institute of Human Origins (IHO), a non-profit research organization dedicated to the study of human evolution. The institute was originally established in Berkeley, California, before later moving to Arizona State University. It remains a leading center for paleoanthropological research and public outreach.

Lucy was crucial because her skeleton proved that early hominids walked upright (bipedalism) millions of years before their brains significantly enlarged. The structure of her pelvis, femur, and knee joints clearly indicated a habitual bipedal gait. This fundamentally changed scientific understanding of the timeline of human evolutionary traits.