The newest "Are We Alone" radio/podcast from the SETI Institute is all about the end of the world. It's a pretty cool show, and it's only Part 1! The host, Seth Shostak, and I talked about cosmic doomsday cults on this show; that segment starts at 17:50 into the show. We cover Planet X, the Mayan calendar, and I even get a dig in at Sylvia Browne. You can download the show as MP3 or as WMV.
And hey-- don't forget to sign up for the free book giveaway, or send me astronomy questions for "Q & BA"!