title: Biosphere science news roundup.  Biosphere 2 completes first two year closure experiment
abstract: On September 26, 1993 Biosphere 2 completed it's first two year experiment which included eight "Biospherians."  Now that the first experiment is concluded the results can be examined and reported.  Future issues of the journal will include more in depth peer reviewed articles on the experiment while this article will give a brief overview.  The facility is now between experiments and is undergoing minor upgrades in preparation for the next ten and a half month enclosure scheduled for March 1994.  The new crew has been chosen and is "moving in" now.  Now that an interval of time has passed since September 26, 1993 and the end of the initial two year closure of Biosphere 2 it is appropriate to take stock of initial accomplishments and problem areas.
authors.forename: M
authors.initials: M
authors.lastname: Nelson
mesh_terms: D000818:Animals; D002245:Carbon Dioxide / Q000032:analysis / Q000378:metabolism; D018556:Crops, Agricultural / Q000254:growth & development / Q000378:metabolism; D018504:Ecological Systems, Closed; D004780:Environment, Controlled; D006801:Humans; D008021:Life Support Systems; D010100:Oxygen / Q000032:analysis / Q000378:metabolism
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen