Robert Zubrin, 22nd Century Martian

Planetary Radio: Space Exploration, Astronomy and Science ›

28:50 | Sep 14th, 2009

Robert Zubrin, 22nd Century MartianLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information...Show More