Guest: Christopher Cokinos.

From rogue scientists to amateur stargazers, plenty of people all throughout history have been fascinated by the phenomenon of "falling stars." Today on Focus, we're joined by award-winning writer Christopher Cokinos to talk about his recent book, The Fallen Sky: An Intimate History of Shooting Stars. Cokinos provides anecdotes from Antarctica to outer space to tell the story of how the study of meteorites became part of modern astronomy.

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.