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sep 26, 1991 - Biosphere 2 opens

Description:

Biospere in arizona that showed what it was like to live in a closed system
involved were 9 scientists
this is ecocentrism

Added to timeline:

Environmental timeline

ByConnor Alfano

23 Oct 2018

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400

Date:

sep 26, 1991

Now

~ 34 years ago

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