Strange Americana: Arizona's Biosphere 2 Has Surprising Ties to Quarantine Experiments

By Kate BoveLast Updated Aug 12, 2020 6:55:03 PM ET
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Photo Courtesy: Universal Images Group/Getty Images

Located roughly 30 miles from Tucson, the old mining town of Oracle, Arizona, has an interesting history dating back to at least the 1870s. When gold and silver were discovered in the area, a mining community started to flourish, and, a few years later, Oracle’s Acadia Ranch became a premier retreat for folks with tuberculosis. Buffalo Bill Cody, who owned the High Jinks Gold Mine for a time and dressed up as Santa Claus in 1911 to surprise the children of the town, even has ties to Oracle. These days, it’s a bedroom community for nearby Tucson, but, mining history aside, what really puts Oracle on the map for roadtrippers is Biosphere 2.


If you thought Nevada and New Mexico were the only states with ties to the interstellar, think again. Built between 1987 and 1991 as an Earth system science research facility, Biosphere 2 has provided researchers with a place to learn about Earth, its living systems and the planet’s place in the universe. At 3.14 acres, the structure remains the largest closed ecological system, or vivarium, ever created. All of that is neat, but what makes it strange is that one of the facility’s most notable purposes was to help determine how viable closed biospheres would be in future space-colonization efforts. Of course, before the system could be brought to the "final frontier," it had to be tested in Arizona and, in the ‘90s, that’s just what happened.

How and Why Was Biosphere 2 Created?

If there’s a Biosphere 2, there must be a Biosphere 1, right? According to the facility’s creators, the first biosphere is Earth itself, which means the various biomes within the giant geodesic domes and pyramids are meant to replicate our planet’s ecological functions. Launched in 1984, the Biosphere 2 project was funded by businessman-turned-philanthropist Ed Bass and helmed by systems ecologist John P. Allen. The two met in the ‘70s at a counterculture community called Synergia Ranch and found themselves intrigued by the "Spaceship Earth" concept.

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Photo Courtesy: Joe Sohm/Visions of America/Universal Images Group via Getty Images

Popularized by everyone from Buckminster Fuller and George Orwell to Adlai Stevenson and Walt Disney World Resort’s EPCOT theme park, Spaceship Earth is a worldview that compares our planet to a ship — one with finite resources that must be respected — that we must live on harmoniously, like a crew, for the greater good. For Allen and Bass, who took the concept even more literally, biospheres could be the way of the future: Not only could fully functional closed ecosystems help humans establish communities in space, but these biomes could also be the solution for surviving (what seemed like imminent) nuclear war.

Perhaps unsurprisingly, opponents called the project "New Age drivel masquerading as science." After all, imagine how unbelievable landing on the moon sounded back in the ‘60s! However, while the goals were lofty — and, quite literally, out of this world — the system is based in science. In exploring the web of interactions within life systems — especially in a closed facility — researchers could better understand how ecosystems operate and respond to various stimuli.


Of course, in order to create a completely closed system, free of variables, Biosphere 2 would prove to be a feat of engineering. The above-ground sections are made of steel and high-performance glass, giving it that futuristic-greenhouse look. All of the window seals had to be airtight, creating, in essence, an interior atmosphere of sorts; engineers designed large structures called "lungs" to account for the fact that the heat from the sun caused the air to expand during the day. An energy center was installed onsite to provide electricity, heating and cool water — you know, all of your standard living space utilities. There’s no doubt that Biosphere 2 has curb appeal, but what’s inside is even more captivating.

Inside Biosphere 2: The Quarantine Experiments of the 1990s

Inside Biosphere 2, there are seven distinct biome areas, including a rainforest, mangrove wetlands, a savannah grassland, a fog desert and a 9,100-square-foot "ocean" complete with coral reef. There were also two anthropogenic biomes: an agricultural system and a human habitat full of living spaces and laboratories. Below ground is all the infrastructure, from piping to onsite natural gas and other resources. Needless to say, it’s all extremely thorough — and, yes, it does sound like something out of a movie. Even more sci-fi plot-adjacent? The experiments that occurred in the facility.

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Photo Courtesy: Clockwise from image on the left: Colin Marquardt/Wikimedia Commons; Notagoodname/Wikimedia Commons; Aspersions/Wikimedia Commons

The first closed mission lasted two years, running from September 26, 1991, to September 26, 1993. The eight-person crew was made up of medical doctor and researcher Roy Walford, Jane Poynter, Taber MacCallum, Mark Nelson, Sally Silverstone, Abigail Alling, Mark Van Thillo and Linda Leigh. Known as biospherians, they subsisted on a diet of bananas, papayas, sweet potatoes, beets, peanuts, lablab and cowpea beans, rice and wheat, 83% of which was grown inside the agricultural biome. Although several biospherians reported feeling hungry on a regular basis during that first year of quarantine, The American Journal of Clinical Nutrition concluded that all of the crew members emerged with lower blood pressure and cholesterol levels as well as more-efficient metabolisms.

Likened to island ecology, Biosphere 2 saw the rise and fall of various organisms contained within the dome: In addition to domestic animals, like hens and African pygmy goats, pollinators and other insects were sealed inside. Some insects cross-bred to survive, and the invasive tramp ant species, which had unintentionally been sealed inside, overtook other species as they would in the wild. And cockroaches also ruled the roost, proving that, yes, they can survive anything. Meanwhile, the less-hardy biospherians were contending with steady oxygen loss: After just 16 months the oxygen levels inside the facility had fallen by about 6%, contributing to sleep apnea and fatigue.


As discussed in Life Sciences in Space Research, there were also psychological and group-dynamic elements to contend with. "Appreciation of the value of biosphere interconnectedness and interdependency was appreciated as both an everyday beauty and a challenging reality," Roy Walford, one of the biospherians, later said. "I don't like some of them, but we were a hell of a team. That was the nature of the factionalism...but despite that, we ran the damn thing and we cooperated totally."

The Future (and Present) of Biosphere 2

After extensive improvements to the facility were completed, a second 10-month mission began on March 6, 1994. While the second crew — made up of Norberto Alvarez-Romo (Capt.), John Druitt, Matt Finn, Pascale Maslin, Charlotte Godfrey, Rodrigo Romo and Tilak Mahato — had better luck when it came to food production, a dispute led to a surprising involvement and even more qualms.

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Photo Courtesy: Tim Roberts/AFP/Getty Images

Ed Bass hired Steve Bannon, a then-investment banking manager, to run Space Biospheres Ventures. Former biospherians were concerned about Bannon, who, to them, seemed more interested in the costs of the project than the safety of the crew. The change in management happened during the second mission, so at 3 a.m. on April 5, 1994, two former biospherians, Abigail Alling and Mark Van Thillo, allegedly vandalized the facility by breaking glass and opening a double-airlock door and several emergency exits for about 15 minutes. "[I] considered the Biosphere to be in an emergency state," Alling told the Chicago Tribune. "In no way was it sabotage. It was my responsibility."

Following the event, several crew members left and were replaced; Bannon departed, which resulted in a civil lawsuit filed against Space Biosphere Ventures; and the second mission ended early. Later, experts from Columbia University evaluated the facility, with the institution saying in a statement that "the Biosphere 2 facility is an exceptional laboratory for addressing critical questions relative to the future of Earth and its environment." Since the carbon dioxide levels could be easily manipulated within the closed system, Columbia scientists conducted global warming research there for a time.


After changing hands a few times, Biosphere 2 has been the property of the University of Arizona as of 2007. Although the university conducts various experiments there — there’s even a lunar greenhouse that aims to find ways to grow produce on the Moon or Mars using a bioregenerative life support system — Biosphere 2 is, by and large, a tourism site. According to TripAdvisor, this four-star attraction allows visitors to see "nature in a controlled state at this world-famous steel and glass research center where desert, forest, ocean and other ecosystems are monitored and studied." As far as roadside attractions go, this marvel of science, engineering and innovation is surely worth the $21 admission ticket if you’re ever in Oracle — and if it's open.

Looking for something to do that's appropriately socially distant? Although Biosphere 2's walking tours have been closed to the public for some time as a safety measure during the coronavirus pandemic, you can now take a driving tour of the facility. Biosphere 2's operators are offering a free companion app that you can download to help you learn about the property and its contributions to scientific research from the comfort and safety of your car while you guide yourself through the grounds. You'll still need to purchase tickets for the driving tour, but this is a novel way to get a glimpse of Biosphere 2 and learn more about it in a safe way.