{"id":642113,"date":"2026-10-26T20:32:11","date_gmt":"2026-10-26T20:32:11","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/642113\/"},"modified":"2026-10-26T20:32:11","modified_gmt":"2026-10-26T20:32:11","slug":"in-1991-eight-people-locked-themselves-inside-biosphere-2-for-two-years-their-oxygen-fell-from-20-9-to-14-5-and-the-culprit-was-the-concrete","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/642113\/","title":{"rendered":"In 1991, Eight People Locked Themselves Inside Biosphere 2 for Two Years. Their Oxygen Fell From 20.9% to 14.5%, and the Culprit Was the Concrete"},"content":{"rendered":"<p>\tIn 1991, Eight People Locked Themselves Inside Biosphere 2 for Two Years. Their Oxygen Fell From 20.9% to 14.5%, and the Culprit Was the Concrete &#8211; Futura-Sciences<\/p>\n<p>October 26, 2026<\/p>\n<p>            7 min    <\/p>\n<p>            <img width=\"1600\" height=\"1067\" src=\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2026\/10\/DenisTangneyJr.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"In 1991, Eight People Locked Themselves Inside Biosphere 2 for Two Years\" loading=\"eager\" decoding=\"async\" fetchpriority=\"high\"  \/><br \/>\n                    In 1991, Eight People Locked Themselves Inside Biosphere 2 for Two Years. Their Oxygen Fell From 20.9% to 14.5%, and the Culprit Was the Concrete \u00a9 DenisTangneyJr<\/p>\n<p>\n            See also\n        <\/p>\n","protected":false},"excerpt":{"rendered":"In 1991, Eight People Locked Themselves Inside Biosphere 2 for Two Years. Their Oxygen Fell From 20.9% to&hellip;\n","protected":false},"author":2,"featured_media":642114,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[273,111,139,69,147,184139],"class_list":["post-642113","post","type-post","status-publish","format-standard","has-post-thumbnail","category-environment","tag-environment","tag-new-zealand","tag-newzealand","tag-nz","tag-science","tag-space-astronomy"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/642113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=642113"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/642113\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/642114"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=642113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=642113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=642113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}