On May 9, 2011 Dr. Donald Johanson spoke about 'Lucy' at California Academy of Sciences, in San Francisco. Here is video from that lecture.
BIO - Donald C. Johanson Donald C. Johanson is the director of the Institute of Human Origins. For the past 30 years he has conducted field and laboratory research in paleoanthropology. Most notably, he discovered the 3.18 million year old hominid skeleton popularly known as "Lucy." Through grants from The Leakey Foundation, National Science Foundation and National Geographic Society, Johanson has carried out field research in Ethiopia, Yemen, Saudi Arabia, Egypt, Jordan and Tanzania.