Fifty years ago, Donald Johanson found "Lucy," a 3.2 million-year-old fossil. She changed the story of human evolution.

A collection of 3-million-year-old bones unearthed 50 years ago in Ethiopia changed our understanding of human origins.

It was already pretty hot by the time Donald Johanson and his graduate student, Tom Gray, arrived at the site at Hadar, ...

The 3.2-million-year-old fossil, discovered 50 years ago, is considered to be one of the most significant early hominin ...

When palaeoanthropologist Donald Johanson discovered a bone fragment ... Johanson’s find became known as Lucy – named after the Beatles song Lucy in the Sky With Diamonds – a 3.2 million ...

NPR's Scott Simon speaks with paleoanthropologist, Donald Johanson, about the 50th anniversary of his biggest discovery, Lucy, an early human ancestor.

SIMON: Paleoanthropologist Donald Johanson, founding director of the Institute of Human Origins at Arizona State University and the man who found Lucy. Thank you so much for speaking with us.