Questions tagged [environment]

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

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votes
2answers
326 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 ...
5
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7answers
879 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 ...
14
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6answers
573 views

How would technology develop differently without astronomy?

Imagine if Earth's atmosphere was shrouded in a perpetual layer of clouds or haze. Enough sunlight gets through to make agriculture still possible, but people are completely unable to see the stars. ...
14
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3answers
489 views

What would be the effect on life/civilisations if the length of a year was longer or shorter?

If you want to have a smaller star but you also want to keep your planet in the habitable zone, you need to put the planet closer to the star. This means shorter years. It is also possible to have a ...
13
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1answer
261 views

What sort of water sources could occur in a world tree?

I'm working on a fantasy setting that's literally a giant tree on a planetary scale. Magic is in effect, so concerns of how a tree that large could survive are irrelevant, but I need to figure out ...
12
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2answers
263 views

How big can Europan fish get?

Assumptions: Jupiter's moon Europa has a salty subsurface ocean in contact with a rocky mantle. The ocean is populated by hydrothermal vents produced by tidal heating. Global heat flow is similar to ...
11
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4answers
522 views

What kind of environment would lead to dominantly yellow foliage?

I'm looking for various factors; Atmosphere Composition, Type of Sun, etc, whatever would work. That is, of course, if this is even likely/possible. I believe that yellow is generally not an ideal ...
10
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2answers
288 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
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6answers
5k views

A Planet Where The Four Seasons Occur Multiple Times In One Year?

Earthlings, I live on a world where most places on my planet has four seasons, just like yours does. We also have one sun and one moon, presumably. It's been not even a year since I came of age (20), ...
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8answers
2k views

Airships without huge balloons/gas bags that can still “float” in air, using minimal or no energy

Making a world where you live in the air, as the surface is not survivable (Venus-like) but there are mountains which serve as islands. I'm gonna leave out the story of the planet as it's not ...
8
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2answers
266 views

Is it possible for a temperate forest/freshwater area to form within a desert?

I am imagining a temperate forested area with freshwater lakes, rivers, small mountains, and rolling grassy hills. This environment is situated within a very large explosion crater. Outside this ...
8
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3answers
883 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 ...
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4answers
821 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% ...
6
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1answer
362 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 ...
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
683 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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3answers
561 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 ...
5
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2answers
449 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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1answer
253 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
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2answers
429 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
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1answer
232 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
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1answer
979 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 ...
13
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1answer
660 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 ...
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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?
9
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1answer
207 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; ...
9
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2answers
980 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, ...
8
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6answers
473 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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3answers
618 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 AD/CE, and I'm wondering if the key element - global pollution - is plausible. In my storyline, the XXIst century brings no huge technological advances (...
7
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6answers
413 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 ...
7
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2answers
313 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 ...
6
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4answers
895 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 ...
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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
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4answers
470 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
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4answers
598 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
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2answers
541 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 ...
4
votes
1answer
183 views

Making a planet with high humidity

I'm making a Region of a planet with very high humidity, mostly covered in fog at ground level. I am open to having seasonal changes and would like there to be a few sunny days lets say 1 out of 15, ...
4
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2answers
170 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
129 views

How to construct an Earth-like world with very high wind speeds

I want to create a world where humans can live outside (perhaps with some protective clothing) but where very high winds exist in almost all potentially habitable areas making life outside impossible ...
4
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6answers
385 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 ...
4
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2answers
238 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
1answer
436 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 ...
3
votes
1answer
419 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
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1answer
79 views

What kind of planet environment could best host aliens like *Battle: Los Angeles*?

If I want a home for aliens like those which invaded in Battle:Los Angeles, what would be the best fitting features? The aliens: Burn water for fuel (assume they are using deuterium for fusion) ...
3
votes
4answers
645 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
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0answers
104 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 ...
3
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3answers
948 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 ...
2
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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 ...
2
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2answers
153 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
342 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....