Biosphere 2 hosted just two "sealed-in" crews, both during the 1990s.
This episode of Ungeniused is sponsored by:211: The Eden Project
210: The Toledo War
209: The 1994 Michigan UFO Event
208: Non-Microwave Popcorn Makers
207: Microwave Popcorn
205: Biosphere 2: The Campus
204: Crystal Pepsi
203: OK Soda
202: Boxing Day
201: Clock of the Long Now
200: Dates Predicted for Apocalyptic Events
199: The Keene Pumpkin Festival Riots
198: Jack-o'-lanterns
197: Shoe-fitting Fluoroscope
196: Chain Letters
195: Worm Charming
194: The Republic of Rose Island
193: John Hancock Tower
192: The Citicorp Center Engineering Crisis
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