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Lynn B.
Report | 2 days ago
The guided tour is only a small sampling of what's available to explore. Be sure to allot time for the self-guided tour which, for me, was the most interesting part mainly because our tour guides microphone gave out right at the start of our guided tour so we couldn't hear anything he spoke about. Also, there is a small cafe that has very limited "snacks"...instead, pack a lunch and have a picnic...lots of places to do so.
bob b.
Report | 5 days ago
watch the weather
charles k.
Report | 7 days ago
Wear comfortable shoes
Cathlene S.
Report | 10 days ago
It's a bit of a climb on the stairs. Be prepared. This is well worth the trip though!
Report | 11 days ago
Neat piece of the past hidden in the desert. Highly recommended for the history of it all and how cool it still looks. The ocean area isn't that great, dirty with few fish and algae problems, but they are planning to transform it into the Sea of Cortez once they get funding to do it. Don't know what to make of the research they did/are doing there but definitely worth the visit to hear about the past missions!
Jennifer N.
Report | 12 days ago
Lots of walking/stairs, take water and a jacket, and eat before you go. They have a cafe but it is gas station type food for astronomical prices. Also, I wouldn't recommend for children under maybe 8 years old unless they are very into science. I took my 14 year old science nerd and she loved it. They have a summer camp program for the older kids as well. (Tour guide said 7th grade and up, I think due to the amount of technical info comprehension) Was definitely worth the trip!
Michael B.
Report | 13 days ago
well worth the trip
Denise M.
Report | 14 days ago
Good restaurant in Oracle, just north of the Biosphere2.
Wayne H.
Report | 16 days ago
take a hat
Report | 18 days ago
Amazing! You must go
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From Our Editors

In 1984, Space Biospheres Ventures purchased a few unassuming acres north of Tucson in the shadow the Santa Catalina Mountains. There, the company expanded its sci-fi-sounding activities?the development of space-colonization technology?and built what would evolve into Biosphere 2.

Designed to re-create Earth's ecosystems, the gigantic glass enclosure (some 7.2 million cubic feet and 91 feet tall in some parts) is famous for housing biospherians in the 1990s. The researchers lived completely sealed inside for extended periods, giving scientists groundbreaking data on human survivability and interaction with particular bionetworks.

The University of Arizona had the 40-acre Biosphere 2 campus donated in 2011, maintaining it as a hub of serious research while expanding its mission to encompass interactive educational outreach. Each year, thousands pass through the on-site labs and classrooms as well as stroll the Biosphere 2 interior to view films, experience multimedia exhibits, or embark on guided tours. Tours venture into the actual ecosystems, allowing earthlings to note biodiversity, smell fresh precipitation in the rain forest, and savor the softness of savannah grassland underfoot until the resident grumpy old man yells at you to get the heck off his lawn. Before their dramatic conclusion at a million-gallon ocean tank, tours delve into the basement to explore the technosphere, where visitors can witness the deep inhales and exhales of the sphere?s respiratory system.

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