Guest: Dr. David Crisp. Topics: NASA Orbiting Carbon Observatory (OCO-2), Earth's CO2 environment and more. Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://thespaceshow.wordpress.com. Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use.

Guest: Open Lines with Dr. David Livingston. Topics: SSP, Heavy lift rockets, electric cars, energy, NASA FY 11 budget. Please note that you are invited to comment, ask questions, and rate this program on the new Space Show blog, http://thespaceshow.wordpress.com. This was our final Open Lines program for 2010. At two hours, you will find this show to be loaded with controversial statements & discussion points.

Guest: Dr. Dennis Bushnell, Chief Scientist at NASA Langley Research Center, was the guest for today's program. We began our discussion talking about the advancements in revolutionary technology needed for a manned mission to Mars. Dr. Bushnell has a published paper on this subject, titled "Advanced-to-Revolutionary Technology Options for Humans-Mars," which I will send as a Word document if you email me and request it. Based on this paper and the first part of our discussion, Dr.