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What on Earth?: Season 12

12x09 Secrets of Biosphere 2
TV-14

  • 2023-03-10T02:00:00Z on Science
  • 42m
  • United States
  • English, French, German
  • Documentary
Satellite images capture a mysterious group of pyramid-shaped structures in the arid, desert landscape of Arizona; experts investigate a highly controversial research facility designed to prepare humanity for life on another world.
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