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alejandra dominguez
alejandra dominguez
México

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Biosphere2

Look for the difficult words

alejandra dominguez
1

cranking tinker vine Lilliputian

ORACLE , Ariz . ? Opening the door to a glass pyramid , a visitor steps from the arid heat of Arizona into a coastal fog desert that stretches toward a savanna . A ocean laps against a rocky shore . A passageway leads to a steamy rain forest where - necklaced trees tower 90 feet high . Here in Biosphere 2 , the world ? s largest controlled environment dedicated to climate research , scientists can with scaled - down ecosystems by switching off sprinklers and up the thermostat to learn about the effects of global warming out in the real world .

2

fated retooling long up

The facility has been shadowed by its ill - 1991 maiden mission to establish an analogue of a self - sustaining colony on another planet . But after some and successful , high - profile studies ? including one that revealed warming oceans are killing corals ? the giant terrarium ( led by the University of Arizona since 2011 ) is finally living to its potential as a site for novel and risky research .

3

reprises acre unveil probing mimicking fare enclosure

In its half - rain forest , scientists are how tropical ecosystems might weather late - 21st - century heat and drought . Soon researchers hope to experiment with radical coral reef restoration methods in the ? s million - gallon ocean . And in March 2022 the operation will a Mars analogue that the original founders ? dream of a plant - filled habitat on a lifeless alien world . Biosphere 2 is effectively like a time machine that can preview a climate - altered Earth ? by changing the concentrations of gases in the atmosphere to those that we think are going to exist in the future to see how the planet could , ? says the facility ? s current director Joaquin Ruiz .

4

counterculture troupe

Biosphere 2 launched 30 years ago , on September 26 , 1991 , when a crew of eight ? including a physician , botanist and marine biologist ? began a two - year residency inside this 3 . 14 - acre terrarium . The structure , a prototype for an extraterrestrial habitat , was conceived by a theater that partnered with businesspeople to form a company called Space Biosphere Ventures . It was intended to be a hermetically sealed ecosystem where several biomes , 3 , 000 species of plants and animals , and a farm would provide the ? biospherians ? with all the air , water and food they needed . ? At the time , a lot of scientists said it literally could not be done , that the whole thing was going to turn into green slime , ? says Jane Poynter , one of the original biospherians and founder of spaceflight company Space Perspective .

5

ooze panned hangry dwindled

The enclosure did not slime . But after a year , the oxygen had to dangerously low levels , the farm was not producing enough crops ? and the crew was suffocating and . To solve the problem , some members of Space Biosphere Ventures ? management team pumped oxygen into the building and used a CO2 ? scrubber ? without disclosing their actions publicly . When the truth emerged , the mission lost credibility with scientists and was by the press . Some still consider this unfair . ? It was absurd that the media portrayed it as a failure , because it completely missed the point that it was an experiment , ? Poynter says , adding that the goal was to discover what problems arise in a human - made biosphere and to learn from those dilemmas . The failure , say several of Biosphere 2 ? s current staff , lay in the lack of transparency ? not the lack of oxygen .

6

gobbled byproduct deputy

Scientists did , in fact , learn something important from what went wrong : the soil was too rich in organic matter , and its thriving bacteria up too much oxygen . At first , the researchers could not track down the excess carbon dioxide those microbes should have released as a of that oxygen consumption . Eventually they found it had chemically bonded with concrete in the building . ? It was a light bulb moment , ? says John Adams , Biosphere 2 ? s current director . ? They could trace , molecule by molecule , where [ carbon ] was going and where it was being stored in ways that they couldn ? t outside ? in the real world .

7

tweak biomes exquisite

When Columbia University took over Biosphere 2 from 1996 to 2003 , researchers realized that , inside this controlled mini world , they could the CO2 , heat and precipitation to predicted future levels and could measure the effects on varied . ? Quite a few people thought that this is an tool because you have a complicated system that you can completely close and risk damaging and learn how stressed systems behave , ? says Klaus Lackner , director of the Center for Negative Carbon Emissions at Arizona State University , who is not affiliated with Biosphere 2 . ? The challenge is : you have to make sure it ? s actually reflecting a real system . I think one can walk that walk , and some of that [ research ] is being done now . ?

8

tipping

Christiane Werner , an ecosystem physiologist at Germany ? s University of Freiburg , used the facility ? s rain forest to investigate how tropical plants and soil share nutrients to protect each other from climate change ? and what happens when those support systems fail . Several recent studies have shown that deforestation and climate - related tree death are transforming rain forests such as the Amazon from carbon storage spaces into massive greenhouse gas emitters . Werner ? s goal is to find what causes these points . Doing so could help researchers make better climate predictions and develop more effective reforestation techniques .

9

traceable domed tracers conjure tracked

Werner ? s team released forms of carbon and hydrogen into the glass - rain forest , then turned off the sprinklers to induce a 9 . 5 - week ? drought ? and where the elements traveled . ? That has never been done before , ? she says , ? and Biosphere 2 is the one place on Earth where you can do such an experiment because you have a fully grown forest you can manipulate . ? In the Amazon , it would of course have been impossible to a two - month dry spell , and the chemical could have escaped anywhere , she notes .

10

soon takeaway buffers wraps coped

The to be published results are being kept under , but Werner says the main was the diverse ways various plant species with the stress . ? Because they have different functional responses , it the whole forest , ? she explains , adding that biodiversity is therefore key to keeping forests stable in turbulent climatic times .

11

heartening dialed

Other experimental results from Biosphere 2 ? s rain forest have been . In a 2020 study published in Nature Plants , Michigan State University ecologist Marielle Smith and her colleagues up the temperature and found that the tropical flora were more resilient to high heat than many had anticipated .

12

microbial deter permits symbiotic

At the facility ? s mini ocean , researchers are partnering with sciences company Seed Health to dose corals with probiotics to see if this can bleaching ( which occurs when heat - stressed corals expel the algae that help feed them ) . The scientists are also developing a program to experiment with ? super corals ? that are bioengineered to be resistant to heat and acidity . ? If you ? re in Miami or Hawaii , you can ? t get to do that research because there ? s a fear that genetically modified corals will get into nature , ? says Chris Langdon , a University of Miami marine biologist who is on Biosphere 2 ? s science advisory committee . ? With Biosphere 2 being in the middle of the desert , there would be absolutely no risk if anything escaped . ?

13

lack acidification leading stranger dissolved

Langdon is no to Biosphere 2 ? s ocean . In the 1990s he conducted research there , revealing for the first time that ocean causes corals to dissolve from a of calcium . He says the giant tank would also be a good place to test a idea to achieve negative carbon emissions : raising the ocean ? s pH by adding rocks , giving the water a greater capacity to pull carbon dioxide out of the atmosphere .

14

breathable hermetically precise

Not all of Biosphere 2 ? s projects focus on climate . Its so - called Space Analog for the Moon and Mars ( SAM ) , currently under construction , ? is very much , at a scientific level and even a philosophical level , similar to the original Biosphere , ? says SAM director Kai Staats . Unlike other space analogues around the world , SAM will be a sealed habitat . Its primary purpose will be to discover how to transition from mechanical methods of generating air to a self - sustaining system where plants , fungi and people produce a balance of oxygen and carbon dioxide .

15

hydroponically regolith basalt precarious epiphany mimic dimmer tinted degraded morsel

Visiting researchers will grow fruits and vegetables in SAM ? s greenhouse , which is painted and to block the sun and the daylight on Mars . They will also experiment with transforming ( crushed rocks that resemble lifeless Martian ) into fertile soil . This could have implications for reviving some of Earth ? s terrains .

And in light of the status of Earth ? s climate , Staats hopes the scientists who live in SAM will experience the kind of he says was described to him by Linda Leigh , one of the original biospherians . ? She said that , in such a closed environment , you can ? t help but be aware of every breath you take , every drink of water you consume and every of food you eat because it doesn ? t go someplace where you never see it again , ? he says . ? It comes right back to you . ?

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