Bio­sphere 2

The Week - Junior - - Science And Technology -

On 26 Septem­ber 1991, eight crew mem­bers (four men and four women) were sent to live in Bio­sphere 2 for two years, com­pletely cut off from the out­side world. Bio­sphere 2, lo­cated in Ari­zona in the US, was the world’s largest ar­ti­fi­cially en­closed sys­tem. The mis­sion was to dis­cover whether a group of hu­mans could live in an iso­lated colony, like they would on an­other planet. The 12,000-square-me­tre struc­ture had its own oxy­gen sys­tem, its own rain­for­est and its own ocean. The crew pro­duced its own food, re­cy­cled waste and wa­ter, and con­ducted re­search. How­ever, af­ter less than a year, food was get­ting low and the crew be­gan to ar­gue. In early 1993, oxy­gen lev­els in the dome had dipped so low that the crew was strug­gling to breathe. The med­i­cal team was forced to let oxy­gen into the dome, and open the air locks.

Al­though the mis­sion lasted a full two years, many peo­ple deemed the project a fail­ure be­cause it had to be helped out by the med­i­cal team.

The team spent two years in iso­la­tion.

Bio­sphere 2.

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