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Science Fiction Greats on Humanitys Destiny in Space
b'Robert Zubrin of the Mars Society talks with Gregory Benford, David Brin, Geoffrey Landis and Larry Niven about terraforming Mars, the origin of life, the drive to explore and more. Emily Lakdawalla tells us what expect when the Cassini Mission comes to a spectacular end. The Cassini theme continues through this week\\u2019s What\\u2019s Up segment with Bruce Betts. Related links are here: http://www.planetary.org/multimedia/planetary-radio/show/2017/0913-science-fiction-panel.html'