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Q&A

Posts tagged oxygen

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Q&A How large does a human's plastron need to be?

I'm referring to an entomological plastron which is a structure that traps a bubble of air next to the insect's body but permits contact between the air and the water. As the insect consumes oxygen...

3 answers  ·  posted 4y ago by Mike Nichols‭  ·  edited 2y ago by HDE 226868‭

Question underwater oxygen
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Q&A What can I add to an oxygen/nitrogen atmosphere to make it unpalatable or poisonous to humans, yet stable and breathable to local creatures?

I have a roughly Earth-like planet in a solar system some distance from ours. The atmosphere of this planet is largely similar to that of Earth, but particularly, has a somewhat higher oxygen conte...

9 answers  ·  posted 5y ago by Canina‭  ·  edited 2y ago by Canina‭

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Q&A Is it feasible to have an oxidizing planetary atmosphere without the presence of an organic photosynthesis of some kind on the planet?

With the emergence of cyanobacteria on earth 3.5 billion years ago, the shift from a reducing to an oxidizing atmosphere began. "The atmospheric O$_\textrm{2}$ levels (in PAL; i.e., normalized to ...

1 answer  ·  posted 2y ago by RosesBouquet‭  ·  last activity 2y ago by RosesBouquet‭

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Q&A Metallurgy in the Carboniferous- Just how much hotter are fires?

The present day atmosphere is roughly 21% oxygen. Historically high-levels might have been as much as 35%, over 66% higher. This made the carboniferous a period of giant bugs and constant devastati...

2 answers  ·  posted 2y ago by Doug Morgan‭  ·  last activity 2y ago by Doug Morgan‭

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Q&A Archipelago worlds build up atmospheric oxygen faster?

I've read super-earths might become archipelago planets. Picture shallow seas, under a thick atmosphere that alternates between muggy and clammy. Because a bigger share of the surface would be cont...

1 answer  ·  posted 3y ago by aadv‭  ·  last activity 3y ago by aadv‭

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Q&A Generating breathable air on Europa?

Humans have colonized the subsurface oceans of Europa - building large cities embedded in the icy crust, hanging beneath it, and resting on the rocky seafloor. These colonists mine metals for const...

3 answers  ·  posted 3y ago by Zxyrra‭  ·  last activity 3y ago by Zxyrra‭

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Q&A What is the highest concentration of oxygen a human being can reasonably survive?

Writing a story in which a human is trapped on an alien planet with an average temp of 6 Celsius, and I want to have the atmosphere be too rich in oxygen, but not to the point where an air tank is ...

5 answers  ·  posted 6y ago by DomineSatanas‭  ·  last activity 3y ago by DomineSatanas‭

Question biology humans oxygen
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Q&A Could dinosaurs breathe modern air?

During much of the Cretaceous period, oxygen levels were substantially higher than they are currently, with estimates indicating that around 30% of the atmosphere consisted of oxygen. Obviously, t...

3 answers  ·  posted 3y ago by Gryphon‭  ·  last activity 3y ago by Gryphon‭

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Q&A Changing air composition on another planet

Hypothetically speaking, if we would find another planet, the size of Earth, with atmosphere as dense as Earth's atmosphere is, and we would insert (in some hypothetical way) nitrogen, oxygen and C...

1 answer  ·  posted 3y ago by Inb‭  ·  last activity 3y ago by Inb‭

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Q&A Can a generation ship withstand its own oxygen and daily wear for many thousands of years?

Regarding the idea of a generation ship carrying a community of people for thousands of years to another planet: Is there is any material for an engineered structure or set of systems that will re...

17 answers  ·  posted 3y ago by Matt Skeptic‭  ·  last activity 3y ago by Matt Skeptic‭

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Q&A How do I make oxygen for a generation ship?

On a generation ship, the people living on it need oxygen, lots of oxygen. More than they can realistically carry, thus a generation ship must be able to create breathable air from relatively commo...

9 answers  ·  posted 6y ago by Uncle Tres‭  ·  last activity 3y ago by Uncle Tres‭

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Q&A How many people can live on the oxygen provided by Earth?

I want to know the how many people can live on Earth's oxygen. Is there a point when humans would use up all the oxygen? What would be the limiting factors? Given we have charts to show the rate of...

3 answers  ·  posted 7y ago by Xm7X‭  ·  last activity 3y ago by Xm7X‭

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Q&A If we put humans on planets with atmospheres different from Earth's atmosphere, but still containing oxygen, would humans be able to breathe?

From Wikipedia: By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. For example, would humans be able to survive ...

6 answers  ·  posted 8y ago by BuildingBetterWorlds‭  ·  last activity 3y ago by BuildingBetterWorlds‭

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Q&A Can enough CO2 be captured, in order to reduce global warming, to reduce oxygen levels to suffocating levels?

In a comment to a recent question, it was pointed out that Biosphere II failed in part because too much CO2 was absorbed by the concrete, leaving insufficient oxygen in available CO2 to be released...

2 answers  ·  posted 4y ago by Justin Thyme‭  ·  last activity 4y ago by Justin Thyme‭

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Q&A What would happen if the oxygen levels decreased by 15 percent?

How would the human body be affected if the oxygen levels on Earth suddenly decreased by 15 percent? This is instant. Not over time. How would we adapt? Would some people die and some not?

5 answers  ·  posted 8y ago by CrazySlayaNinjaBear‭  ·  last activity 4y ago by CrazySlayaNinjaBear‭

Question biology humans oxygen
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Q&A What would happen in a world with no air?

A bit of a whimsical question, or a few questions really. What would happen in a world with no air - no oxygen (plant life stop producing oxygen). Specifically, let's say the oceans shut down oxy...

3 answers  ·  posted 7y ago by Thomas Wilson‭  ·  last activity 4y ago by Thomas Wilson‭

Question oxygen
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Q&A Producing oxygen without plants

Obviously, current oxygen levels should last us years, so we are talking about a long-term solution. Also, in this hypothetical scenario, plants have stopped releasing oxygen but haven't stop prod...

6 answers  ·  posted 4y ago by A.V. Arno‭  ·  last activity 4y ago by A.V. Arno‭

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Q&A What properties would make a plant ideal for use on a space ship?

What properties of a species of plant would make it the ideal choice for taking it on a year-long trip through space as both an oxygen source and food source? We should assume that the amount of ...

4 answers  ·  posted 8y ago by Philipp‭  ·  last activity 4y ago by Philipp‭

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Q&A Metallic oxygen as a possible future material?

I'm researching possible materials that maybe be used in the far future. I came across something called metallic oxygen. If oxygen is compressed to 10GPa, it turns into a dark red solid O8. If this...

3 answers  ·  posted 4y ago by Curiosity‭  ·  last activity 4y ago by Curiosity‭

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Q&A Can you have reduced visibility (due to fog) but an atmosphere that is still breathable?

Is it possible to have an atmosphere that is essentially fog, but still be breathable by humans? I'm basically looking to have an environment where visibility is very low (for suspense reasons) ev...

3 answers  ·  posted 4y ago by Wompguinea‭  ·  last activity 4y ago by Wompguinea‭

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Q&A Alternative elements for oxygen transport in an alien blood

I am designing an alien civilization for a story, and I am currently in the biological part. They will be oxygen breathers, so they will need to have that oxygen delivered inside their bodies, and ...

5 answers  ·  posted 4y ago by Carlos Zamora‭  ·  last activity 4y ago by Carlos Zamora‭

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Q&A What would be the effects on the human body if the oxygen level increased by a lot?

How would the human body be affected if oxygen levels increased by a lot? Our air is 78% nitrogen and 21% oxygen. If it increased to 30% oxygen, what would the effects be and how long would it ta...

8 answers  ·  posted 8y ago by CrazySlayaNinjaBear‭  ·  last activity 4y ago by CrazySlayaNinjaBear‭

Question biology humans oxygen
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Q&A Looking to optimize the atmospheric gas mix and pressure for humans for minimal cellular degeneration

To build another world, I would want a perfected atmosphere that would sustain the air cycle and yet optimize a decreased cellular degeneration. i.e.: increase quality and length of life. Would ...

2 answers  ·  posted 4y ago by lmmc‭  ·  last activity 4y ago by lmmc‭

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Q&A How could an earth like planet increase the amount of oxygen in the air

How could the amount (total mass) of oxygen be increased on a planet like Earth (with a similar atmospheric composition), preferably by natural processes? For the sake of having a ballpark number...

8 answers  ·  posted 5y ago by lijat‭  ·  last activity 4y ago by lijat‭

Question geology oxygen
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Q&A Animal with inner membrane gas separation

I want to make a creature capable of filter O2 from normal air in order to make several things... (filter air toxins, increase partial pressure of O2, etc). Could be possible make an organic memb...

1 answer  ·  posted 5y ago by Ender Look‭  ·  last activity 5y ago by Ender Look‭

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Q&A Is possible to make an "almost-perfectly" sealed ship?

In a series I remember that a group of people were trying to make a colonization ship and they had a big problem: the air. Ships (like every object) aren't perfect and they have micro fissures in t...

6 answers  ·  posted 5y ago by Ender Look‭  ·  last activity 5y ago by Ender Look‭

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Q&A Fire on different oxygen density

I'm creating a world with different oxygen density, about 15%. When given same fuel and air pressure, how will the fire burn up in this 15% oxygen density atmosphere compared to our world? And the ...

1 answer  ·  posted 6y ago by Heart_L‭  ·  last activity 6y ago by Heart_L‭

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Q&A Polycythemia good underground?

Polycythemia is where the hematocrit is above 55%. This can be divided into absolute and relative and absolute can be further divided into primary and secondary. Absolute polycythemia is where the...

2 answers  ·  posted 6y ago by Caters‭  ·  last activity 6y ago by Caters‭

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Q&A Space Farms: algae vs plants for food/oxygen?

First the reality-check: In a sci-fi world where humans have interstellar travel but "nice" Earth-like planets are rare, what reasons might an algae farm be "better" than a plant farm, especially ...

2 answers  ·  posted 6y ago by wetcircuit‭  ·  last activity 6y ago by wetcircuit‭

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Q&A Making the entire inner solar system have a breathable atmosphere?

Let's say it's sometime in the future, and humanity has expanded outwards into the solar system, and we've genetically engineered some really big plants that can for some unimportant reason, surviv...

2 answers  ·  posted 6y ago by possiblySerious‭  ·  last activity 6y ago by possiblySerious‭

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Q&A How Do I Supplement Oxygen Intake?

Series Premise Made Short: For reasons that I'm not allowed to describe here (confidentiality), Earth's deciduous and tropical plant life largely dies off. A hardy and oxygen-hungry microbe infests...

11 answers  ·  posted 6y ago by SirenKing‭  ·  last activity 6y ago by SirenKing‭

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Q&A Is atmospheric composition based on water content?

More specifically, I've had some debates with a friend on how a planet with low oxygen would work. Of course, it's his IP so he insisted on low oxygen, and we're hand waving aspects of it. But for...

2 answers  ·  posted 6y ago by armorhide406‭  ·  last activity 6y ago by armorhide406‭

Question water oxygen
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Q&A Vanishing oxygen

So here's the premise: We have an Earth-like planet, with a civilisation at roughly the same state as ours today. Scientists have been monitoring the atmosphere for centuries, what with forecastin...

4 answers  ·  posted 7y ago by Simba‭  ·  last activity 6y ago by Simba‭

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Q&A Oxygen - 100% plant-free!

Context for Question The colonisation of the planet [ INSERT NAME ] was an enormous social experiment performed by the Terran Planetary Science and Terraforming Council; this previously-barren wor...

5 answers  ·  posted 7y ago by dw0391‭  ·  last activity 7y ago by dw0391‭

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Q&A could different bloods of the same metal type mix?

Other blood colors The link about talks about other color's of blood that could be if made with either different metals or different oxygen carrier's. What I want to know is if you mixed iron bloo...

1 answer  ·  posted 7y ago by Rayne Thomas‭  ·  last activity 7y ago by Rayne Thomas‭

Question oxygen metals blood
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Q&A Is the vibrancy of the color of blood visibly affected by blood cell content?

Part of this story I'm writing involves a human subspecies who are adapted to extremely high altitudes -- as high or higher than our real world's Tibetan population, let's say. I've done research t...

1 answer  ·  posted 7y ago by undine_centimeter‭  ·  last activity 7y ago by undine_centimeter‭

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Q&A What would happen if oxygen were to briefly disappear from Earth's atmosphere, then reappear?

Imagine that the oxygen disappears from earth's atmosphere for some 10 seconds completely. what would be the casualties it would cause, what would be the climatic changes and other changes it would...

5 answers  ·  posted 7y ago by Akshay Vasu‭  ·  last activity 7y ago by Akshay Vasu‭

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Q&A What would happen if Earth's oxygen reached the Sun?

The Scenario: The Sun is eternal. We are producing much more oxygen than we need. First off, would the atmosphere grow, or would it just become much more dense? Given the circumstances, if th...

2 answers  ·  posted 7y ago by Dexus‭  ·  last activity 7y ago by Dexus‭