Biosphere 2 was meant to prove we could build a world from scratch. Instead, it became a fight to keep the air breathable and the story from turning toxic. In 1991, eight people sealed themselves inside a vast Arizona terrarium designed to test whether a closed ecosystem could sustain human life and one day help us survive on Mars. What followed was not just a biosphere experiment under glass, but a slow collision between science, survival, collapsing oxygen levels, and a press narrative determined to call it a joke. This week, we dig into what really happened inside Biosphere 2, why the project began to unravel, and whether it was ever the failure people still think it was. Topics include The Biosphere 2 experiment and its original Mars habitat ambitions Why oxygen levels dropped inside the sealed ecosystem The biospherians, food shortages, and life inside the dome How media coverage helped distort the story of Biosphere 2 Whether Biosphere 2 failed, or was misunderstood from the start Resources and Further Reading Biosphere 2 - Wikipedia Life under the bubble - Discover magazine The Human Experiment - by Jane Poynter Host & Show InfoHosts: Kyle Risi & Adam CoxIntro Music: Alice in dark WonderlandCommunity & Calls to ActionReview & follow on: Spotify & Apple PodcastsInstagram: @theCompendiumPodcastWebsite: thecompendiumpodcast.comSupport us: Sign up to PatreonCircus Job Board: Apply to join the CircusShare this episode with a friend! If you enjoyed it, tag us on social media and let us know your favourite takeaway. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.