'Spaceship Earth' Director Matt Wolf on Surprising Celeb Cameos and the Documentary’s New Relevance

While documentaries have been on trend lately, ‘Spaceship Earth’ delves into a often-forgotten and quirky blip in early 90s history known as Biosphere 2. The experiment placed eight volunteers in a self-engineered replica of earth’s ecosystem, where they remained isolated and quarantined for two years. The project was a media circus at the time (one that inspired the Pauly Shore comedy, Bio-Dome), but director Matt Wolf seeks to uncover an unbiased truth about the experiment using archival footage, new interviews with its subjects, and quite a few surprising cameos. ‘Spaceship Earth’ premieres May 8 on Hulu.