Episode 31 of Books and Ideas was recorded live at Dragon*Con 2009 in Atlanta, Georgia. It is an interview with NASA's Les Johnson and focuses on his book, "Paradise Regained: The Regreening of Earth."

You will find show notes, links, and episode transcripts at http://booksandideas.com/.

Send Dr. Campbell email at gincampbell at mac dot com.

You can also post comments on our new FaceBook Fan Page.