I was recently interviewed by Zane Claes and Mark Shore of "Let Us Present" and they've posted the segment on their site. We talk about where NASA is now and where it's going, and how things like SpaceX play into that. I'm still trying to figure this all out myself; we're in a funny time in the history of space exploration, where it's hard to say exactly where we'll be in a few years.
If you like the interview you can subscribe to their podcast. And I've written about space exploration many times; there's a big ol' list on my Debating Space post that'll keep you busy for a while, too.