Australopithecus afarensis-Ancestor or Not?

Australopithecus afarensis-Ancestor or Not?

Available on Prime Video, The Great Courses Signature Collection
S1 E2: Discovering and debating over fossil remains of a possible Homo ancestor, Australopithecus afarensis, in 1970; following the story from the perspective of the key personalities involved, scientists Don Johanson and Richard Leakey.