Guest: James Chatters.

One of the oldest human skeletons found to date is referred to as "Kennewick Man." This skeleton was discovered by two young men along the Columbia River in 1996 and brought to the attention of James Chatters, a forensic anthropologist and our guest today on Focus. Controversy arose when the U.S. government reclaimed Kennewick Man and placed him in storage—but Chatters had done enough tests to reveal the skeleton to be nearly 9,500 years old. Today on Focus, Chatters will explain how, armed with this information, he set out on a multicontinental quest to understand the origins of Kennewick Man.

Guest: Charles Pellegrino.

Today on Focus, we're joined by the author of Unearthing Atlantis: An Archaeological Odyssey. Charles Pellegrino synthesizes archaeology, paleontology, history, and literature into one volume as he explores the origins of Atlantis and the stories from which the myth arose. He'll talk about all this and more today on the show.

Guest: Donald Johanson.

The oldest hominid skeleton discovered to date, nicknamed "Lucy" by paleontologists, was discovered by paleoanthropologist Donald Johanson in 1973. He joins Focus today to talk about his book Lucy's Child, in which he details his work in the field at the time of the excavation, the controversies surrounding the discovery, and how the spectacular find may contribute to further knowledge of human origins.