Ready to become a space emigre? For half a century, visionaries have been talking about our future off-Earth – a speculative scenario in which many of us live in space colonies. So why haven’t we built them? Will the plans of billionaire space entrepreneurs to build settlements on Mars, or orbiting habitats that would be only minutes away from Earth, revive our long-held spacefaring dreams? And is having millions of people living off-Earth a solution to our problems… or an escape from them?Guests:Marianne Dyson – Author and former NASA flight controllerEmily St. John Mandel – Author, most recently of “Sea of Tranquility”John Adams – Deputy Director, Biosphere 2, University of ArizonaFeaturing music by Dewey Dellay and Jun MiyakeBig Picture Science is part of the Airwave Media podcast network. Please contact sales@advertisecast.com to inquire about advertising on Big Picture Science.You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!  Learn more about your ad choices. Visit megaphone.fm/adchoices