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Send us Fan Mail This week we kick off a brand new season of Hot Talk with a recap of the 2020 documentary Spaceship Earth about the paradoxical BioSphere2 and its 8 human test subjects. In 1991, the "biospherians" entered the the air- and water-tight building with the aim to provide all of their own food for the two-year experiment in self-sufficiency to study its implications for future…
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