I have an mp3 player that can pick up FM radio, so while I'm at work I listen to it.

Today (yesterday for you guys, I work off hours) they had a physicist on who talked about what kinds of things in sci-fi are really possible. In part of it, he even discusses death stars. Given the GC2 interest around here, especially lately w/TA coming out and terror stars, I thought it was particularly interesting and timely. =>

Anyhow, here its, free to download from the site of the radio station I heard it from:

http://www.kuow.org/defaultProgram.asp?ID=14721

or more directly:

http://www.kuow.org/mp3high/m3u/SpeakersForum/SpeakersForum20080424.m3u

dunno how long the links will be up