Part 1, including an interview with Robert J. Sawyer, plus a comment or two from Robert Charles Wilson, among others.
Part 2, featuring yours truly. (They call me a "Harvard-trained expert," which amuses me for some reason. And that is one wacky face I am making in the still frame, huh?)
Part 3, including an interview with author John C. Wright about his (relatively) recent conversion to Christianity, and scientist-turned-writer Peter Kazmaier.
And part 4, the wrap-up.
A nice overview, I thought. You can also watch the episode (and a bunch more) at Listen Up TV's website.