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" With Space Shuttle Discovery safely home after a nearly 13-day flight, NASA is breathing a collective sigh of relief. STS-121 was by far the safest space shuttle flight yet (at least in terms of launch debris). Frequent Popular Mechanics contributor and four-time shuttle astronaut Thomas D. Jones joins me in the studio to chat about this most recent flight, the future of the space shuttle program, the future of the ISS and what it&amp;#039;s like to work on a construction site that orbits the Earth once every 90 minutes. Plus, Tom provides insight into what&amp;#039;s next on the agenda for Discovery&amp;#039;s crew. \u2014Benjamin Chertoff Download and listen here. Download and listen through iTunes here.  NEXT: Podcast: The Search for Life in Our Universe. Earlier: Discovery Comes Home, Discovery 100% Cleared for Re-Entry,Great Flight So Far, Say Shuttle Managers, and Not Much Else,Preliminary Imagery Puts Discovery in the Clear.Launch:July 4 launch live blog.July 2 launch attempt live blog.July 1 launch attempt live blog. Pre-Launch: Backup Plans: Houston to Take Remote Control if Shuttle is Damaged, NASA Says Shuttle Risk Overstated; Yet Some Risk Unavoidable, Images from Discovery&amp;#039;s Launch to Aid Future Redesigns, The Clock is Running: Discovery Set for Saturday Launch, NASA&amp;#039;s &amp;quot;Go&amp;quot; for Launch, But Is the Space Shuttle?, The Great Space Shuttle Debate: Is it Safe? A Special Report. High Altitude Construction: Astronaut (and today&amp;#039;s podcast guest) Tom Jones helps assemble the International Space Station. NASA "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/space/a763/3368256/>