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Questions tagged [environment]

For questions about an environment or aspects of it such as geographical, atmospheric or climate.

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7
votes
4answers
760 views

Is this 80.000km-diameter world plausible?

Characteristics: has close to 80.000km in diameter The atmosphere is composed of: -30% hydrogen (cold gas planets have hydrogen but it makes sense it exists in a rocky planet?) -20% oxygen -49% ...
7
votes
3answers
681 views

Effects of gravity upon weather?

So there are loads of things that are taken into account with weather from geology to water currents to axial tilt etc. But i am wondering what the effects would be on weather on planets with varying ...
6
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3answers
2k views

Can a planet with a dead core still generate a strong magnetic field?

Imagine a world with a dead core, like Mars, but covered in water. This world has managed to hold on to its atmosphere and quite a bit of its water as well. I'm sure the prodigious life there would be ...
6
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4answers
677 views

What kind of event could destroy a major part of the infrastructure but leave the rest intact?

I have a certain vision for a post-apocalyptic cyberpunk world in which civilization itself is collapsed, but technology and structures are still existant. 98% of human population is wiped out by a ...
5
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2answers
350 views

How can a world have permanent dense fog?

I recently asked a question about how a world could have permanent cloud cover. The answer was to turn the world into venus. However, my purpose for cloud cover was to have the people living above ...
4
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7answers
742 views

Impact on the sciences with helium instead of nitrogen

Suppose we have a planet whose atmosphere has roughly the same gaseous proportions as Earth, but helium replaces nitrogen, and has a strong hydrogen presence in the upper atmosphere; has a ...
4
votes
1answer
238 views

How much Sulfur Dioxide is needed to freeze life on earth?

This is inspired by What single element could destroy the world?. Injecting sulfur dioxide into the atmosphere has been proposed as a mechanism to relieve the symptoms of global warming by creating a ...
4
votes
3answers
519 views

What would the flora on a Methane world be like?

Linked: What would animal life on a methane world look like and how would it evolve? What would the conditions on a methane world be like? How would an intelligent race on a methane world achieve a ...
4
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2answers
311 views

Living on a Giant Tree - Resources

This is one of a series of questions centered around living on a giant tree. The setting/scenario is described below: In my fantasy world, elves live on a giant tree, very similar in structure to a ...
4
votes
2answers
391 views

What would a world whose atmosphere is made up of primarily ammonia be like?

I'm trying to create a fictional world where the primary species breathes in gaseous nitrogen to survive (and hence relies on ammonia). I'm currently working with a planet that would be about the same ...
3
votes
1answer
179 views

Is it possible to have a planet with just one climate? [duplicate]

There are a number of games who depict planets as one general climate such as Desert or Tundra for example. I know that games only do this to save time and money and obviously, this is not evident on ...
2
votes
1answer
774 views

The effects of gravitational pull in a solar system with a pendulum Sun

Imagine a world whose sun is swinging like a pendulum above a flat surface. This is a sketch of the diagram. A complete cycle lasts twenty-four (24) hours (from an end to the other and back again to ...
31
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12answers
10k views

In the late 1940’s to early 1950’s what technology was available that could melt a LOT of ice?

In my story I’ve devised lore where Greenland becomes a US territory, and they begin populating the region. It initially just served as the hub for numerous military bases and airbases, but eventually ...
13
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1answer
631 views

What is the maxiumum depth for an Earth like atmosphere?

I am sure most of you have seen Star Wars. In Episode IV: The Empire Strikes Back our heroes travel to Bespin, a gas planet with a habitable zone to refuel at the floating cloud city. Well of course ...
11
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5answers
2k views

The shortest possible distance between a boreal area and a hot desert?

Let's assume a planet like ours, same size and same conditions. My characters live at approximately 60° North, in a boreal forest, with a climate much like the Nordic countries in Europe. They are ...
10
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3answers
8k views

If the gravity was half as strong, how would the enviroment change? [closed]

If the gravity was half as strong, how would the enviroment change? Would all the plants grow differently? What change would there be in flying creatures?
10
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2answers
165 views

What metals other than calcium can be used to create alien bones that won't also engender a human-toxic environment?

Edit: Okay, truth be known that this question was part of a set of 5 related questions that I was recommended to break up into individual posts (in their original form, the comments had no trouble ...
9
votes
2answers
967 views

Extending the Kola Superdeep Borehole

In an effort to accurately map and predict earthquakes and tectonic plate movements, scientists wish to insert sensors through the earth's crust and into the upper mantle. Through some Excel wizardy, ...
9
votes
1answer
154 views

What plant colours other than black could be available on a red dwarf planet?

Hello! I'm no scientist so I've reached the limit of my knowledge. I was wondering if any of you smart beans out there would be able to help me figure this out? Here are the specs of my system; ...
8
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3answers
390 views

Perpetual fog issues

What problems would perpetual fog cause to a country roughly the size and environment of Ireland? The country has all modern infrastructure such as power plants, roads, factories, hospitals, etc. ...
8
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6answers
451 views

How to explain lack of fosil fuels on an Earth-like exoplanet?

Planet - habitable, tidally locked planet orbitting red dwarf. Aim: a realistic answer (neither involving handwavium nor aliens that used it all) why a virgin planet that already experienced a while ...
7
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2answers
539 views

What would happen if a large area had permanent cloud cover?

This question is not a duplicate of this question. They're similar, but this one has one very large difference: only a large area has permanent cloud cover, not the whole planet. If low clouds or ...
7
votes
2answers
284 views

Drawing landmasses for this odd-shaped planet

I've just come here for some help drawing a map for this fictional planet where two roughly similar planets have been smushed into kind of pear shape like this: So this planet spins on an axis which ...
7
votes
6answers
372 views

How can chaotic entities be prevented from spreading beyond their domain?

This is a follow up question to one I asked earlier:How can religions be structured in ways that allow inter-faith councils to work? So, these gods are basically artificial intelligences that are ...
6
votes
3answers
573 views

Could “normal” human development lead to a sufficient air pollution to make gas masks mandatory?

I'm starting a story taking place around 2080, and I'm wondering if the key element -global pollution- is plausible. In my storyline, the XXIst century brings no huge technological advances (I mean ...
6
votes
4answers
572 views

How can I explain rainforests in a world with little, localized rain?

On the world I am building (Let's call it Bob for simplicity's sake), the days last 9 years. As a result of this, the living beings on Bob must migrate across the planet to avoid the encroaching night....
6
votes
4answers
453 views

Is waterwalking possible?

I am working on a world situated on the Earth. There is normal gravity, normal conditions of living - normal everything, except the human population itself. The situation: Humanity as a species ...
6
votes
2answers
493 views

Gravity/Ecosystem on a peanut-shaped planet?

I'm interested about whether or not and how gravity would be affected on deformed planets. You could think of this as whether or not mega-asteroids would be able to sustain life? If so, would ...
6
votes
4answers
2k views

How would a floating island work? [duplicate]

Your basic, average floating sky island. How would a floating island 1. Get up high, and 2. Stay up. Here's the info you need to work with: The planet is Earth-like (supports earth like life) The ...
6
votes
4answers
876 views

How to go from Australia to Europe using correspondences?

I am writing a story where we have our real science-based world, and a parallel world where magic is the more dominant principle. In fact the principle of magic is so dominant, that one cannot travel ...
5
votes
1answer
316 views

What is the largest dragon that could take off without destroying the planet?

Inspired by this answer: Suppose there is an enormous dragon sleeping underground (let's not worry about the biomechanics of how such a creature could exist). One day, it wakes up, shakes the earth ...
4
votes
1answer
400 views

What would the average UV-Index of New York City be, if the ozone layer was completely depleted?

If the ozone layer of planet Earth was completely depleted (to near-zero concentrations), what would the average summer UV-index rise to in New York City? If relevant, other changes anticipated are ...
4
votes
2answers
167 views

Would it be plausible to have a Machine that generates storms? (No Magic)

For my fictional world I want to conceal a location from a governing body. Would it be plausible to have a machine that generates a severe storm that could get rid of boats and airplanes? Would ...
4
votes
2answers
232 views

Preventing a primitive civilization from being exposed to light

Consider the following scenario: A world hosts a primitive civilization. This civilization is very basic, approximately stone-age but has not discovered fire yet. The ancestors of this civilization ...
4
votes
6answers
348 views

Can I have a glacier on a tidally-locked shallow-sea planet?

I have a planet that is tidally locked to its sun. The ocean is shallow (a few hundred meters) and was artificially created in the past by harvesting the system's Oort cloud or outer-system ice ...
3
votes
3answers
887 views

How could a Dyson Sphere imitate a natural world?

I'm imagining an impossibly massive, diverse world that could only fit on the inner surface of a Dyson Sphere/Ring or similar megastructure. Would it be possible to design a system such that from the ...
3
votes
4answers
608 views

Could a human colony persist long term on a planet with limited food and water resources?

Suppose a highly tectonically active planet, slightly smaller than Earth, has attracted the human race's attention due to its mineral wealth. Its landscape primarily consists of mountain chains, ...
3
votes
1answer
381 views

Russia's Alternate Geological History

Since the geological history of the world's largest nation is as big as the nation itself, and since I don't have a master familiarity with Russia's formation over hundreds of millions of years, I'm ...
3
votes
0answers
99 views

Semi-liquid Atmosphere - Other questions [closed]

Part 4 (last) of Semi-liquid Atmosphere Questions: This part I'm not really considering too strongly yet. But feedback is still awesome. Other stuff. For future. Possibly. Landforms How might this ...
2
votes
3answers
243 views

Is it possible to build cities on Argentine and Brazilian swamps?

I'm creating a developed country in South America with its development similar to that of Canada or Australia (little behind the US) with population around 160M in 1850, growing to 346M in 1925 and ...
2
votes
2answers
141 views

Cyborg adaptation to a high pressure environment

I'm currently working on a science fiction comic about humans marooned on an alien world for generations. This world is slightly larger and more metallic than earth with greater gravity a higher ...
2
votes
3answers
609 views

What happens when a tidally-locked planet breaks out of the synchronous rotation?

Say you've got a hypothetical human-colonized planet planet roughly the size and composition of Earth orbiting around an M-class star a third the size of the sun at 0.2 AUs. Due to the proximity, this ...
2
votes
3answers
335 views

If the sun of a fictional world did not rise on random days, how would it affect its civilizations? [closed]

I previously asked about the possibility of a fantasy world that has a different sun every day and where, on random days, no sun rose: World with a different sun every day, and random days with no sun....
2
votes
4answers
264 views

Can an inhabitable zero-G environment occur in nature?

I want to set a story within a zero gravity environment wherein creatures can live, breath the air, fly and flourish. The environment should supply all the things living creatures (as we know them) ...
2
votes
5answers
201 views

What mechanism could be used to create an eternal night?

My question is how a species, given sufficiently advanced technology - could block out all - or most - visible light to a generally earthlike planet without rendering it uninhabitable. The only ...
2
votes
3answers
1k views

How long would it take for the planet to recover from an apocalyptic event? [closed]

The best example for what I am trying to describe would be the worlds of Adventure Time, and The Dark Tower series. These worlds both developed following a cataclysmic war that destroyed a ...
1
vote
2answers
249 views

Edestus Gigantus In modern oceans

What are the effects of introducing 2600 sharks of the primitive Edestus Gigantus specie* in modern waters in different places on earth? Will they survive, how ? for how long? can they destroy the ...
1
vote
10answers
821 views

Where can I easily/cheaply get a hundred square miles of land for a new country?

I'm looking to found a new country on a real-to-life Earth, and I need somewhere to put it. The country is going to be anywhere from 100 to 1000 square miles (250 to 2500 square km) in size. Assume a ...
1
vote
3answers
410 views

Why would be preferable use crossbows than firearms? [closed]

First of all, I am aware that its impossible for a planet with less gravity than the Earth, to naturally maintain an atmosphere with the same terrestrial gases, in an equal or greater proportion. ...
1
vote
0answers
163 views

Effect of asteroid impacts on Earth [closed]

So specifically I'm looking at three asteroid impacts at once. Little backstory: It takes place over 100 years in the future. Population steady grew. For unimportant reasons aliens show up. Three ...