Guest: Dr. John Jurist. Topics: This is the first in a series of programs focused on the use of bisphosphonates to mitigate bone loss in long duration spaceflight. You are invited to comment, ask questions, & discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, & any discussion must be relevant & applicable to Space Show programming.

Guest: Open Lines with Dr. David Livingston. Topics: An Open Lines program covers a wide variety of topics of interest to the listeners. You are invited to comment, ask questions, & discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, & any discussion must be relevant & applicable to Space Show programming.

Guest: Dr. Robert (Bob) Zubrin. Topics: NASA, the Mars Program, Dr. Zubrin's new book, "Merchants of Despair." You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright.

Guest: Dr. William (Bill) Rowe. Topics: Space medicine issues, magnesium issues, microgravity, ISS experiments, and more. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright.

Guest: Dr. James Hughes. Topics: We discussed his book, "Citizen Cyborg: Why Democratic Societies Must Respond To The Redesigned Human Of The Future," human enhancement, public & space policy, long duration spaceflight. The Space Show wishes all of you a very Merry Christmas and holiday season. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming.