I'm supplementing my review to add this: Mat Kaplan may be the greatest interviewer currently working in any medium.
I get excited every week when I see that there's a new edition of the Planetary Radio podcast, or the monthly Space Policy Edition. They provide fascinating, up-to-the minute talks with everyone from astronauts to academics, and I always learn new things about science, history and politics. The Planetary Society staff is full of smart, cool, fun people, and it's a continual pleasure to listen to Mat Kaplan, Bruce Betts, Emily Lakdawalla, Casey Dreier, Jason Davis and the rest, including CEO Bill Nye (cooler than whom you do not get). I'm a longtime admirer of The Planetary Society's work, so I was a member for years before I discovered the podcast, but if the only thing my membership paid for was the podcast, I would consider it money well spent. And I will not rest until I win the space trivia contest!