Questions tagged [environment]

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

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7
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3answers
163 views

Revitalizing a planet formerly locked in an artificial winter — how long would it take?

So I have a planet that has had it's atmosphere clogged with artificial clouds for some five thousand years. Basically a prolonged ash winter; everything died. (Or, almost everything. Would I be right ...
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2answers
438 views

Struggling god with an unworkable universe [closed]

Background You are a member of a world of super-beings. Not everyone wants to be a god but those who do typically enroll at a Godiversity. They take classes in all sorts of things such as Ethics, ...
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1answer
241 views

How would an ecosystem based around chemotrophs produce oxygen?

Outline A planet which is heated tidally by its Brown Dwarf parent and permanently dark needs to have native alien life which has [somewhat similar biochemistry to Earth] and also be [permanently ...
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3answers
382 views

how will an underground city state work?

In my upcoming book, nuclear war broke out and the survivors were forced to live underground indefinitely. How would a subterranean city operate, especially in regards to accommodation, movement and ...
7
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1answer
422 views

Entirely too much mana from the heavens

Time period is renaissance, with the most powerful culture being in a area geographically similar to the middle east. So a cleric was trying to combat a drought in his kingdom using the power of a ...
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2answers
570 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 ...
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17answers
2k views

Human caused apocalypse other than nuclear winter or climate change [duplicate]

I am writing a post apocalyptic story in which a large amount of the foliage is dead and agriculture has become much more difficult. My original idea was to say that this was caused by an ancient ...
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9answers
2k views

Detritivore farming

So I have this intelligent alien race of detritivores and I was wondering if it would be more practical for them to be a farming society or a hunter-gatherer society. I don't know if this is very ...
6
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4answers
2k views

How big would the ice ball have to be to deliver all the water at once?

One popular theory to explain how Earth got its water is that it was delivered by asteroid/comet/etc. The form this theory usually takes is that many small impacts occured over a long time, each ...
6
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4answers
575 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....
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4answers
1k views

Would a “city on a bridge” be friendlier to the environment than a more typical city on land? [closed]

The "city on a bridge" that I'm envisioning has the entire population living their entire lives on a habitable bridge or a series of such bridges over major rivers, only going on land for recreation ...
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3answers
7k views

How can I kill all the flies in the world? [closed]

I am a mad scientist who has discovered a way of efficiently killing all sorts of annoying flies, from mosquitoes to fruit flies, and want to unleash my creation upon the unsuspecting buzzers. However,...
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4answers
877 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
353 views

Cave/Subterranean Lighting

I have a cave that is ravine like and stretches approximately one kilometer down into the Earth. Let's assume that the cave has a clear, crystalline roof allowing some light in. Is there any sort of ...
6
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3answers
491 views

A city where it doesn't rain in the day, for a month, and can farm on the outskirts

I'm trying to figure out if a certain city, with these characteristics, is possible, geographically: Assume the city's the size of Renaissance London... With Renaissance London technology Doesn't ...
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3answers
224 views

How could a small civilization move about normally, tactically, and quickly in a large swamp?

This is a small civilization (more than just a town or two) almost under the shadow of the regional hegemon. The dominant civilization knows they are there, but don't go too deep into that swamp ...
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4answers
13k views

What would happen if there was no wind?

Assuming that during the middle ages on Earth, all wind stopped. Some magic spell has made it so that air will no longer move faster than a gentle breeze from thermodynamics (the speed air moves out ...
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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 ...
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5answers
242 views

What would the flora and fauna be like on a planet with the most competition? The most violent planet

My setting has a lush rainforest planet, which houses some of the most feared animals in the galaxy. The abundance of food would make competition tougher and tougher over millions of years of ...
6
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5answers
695 views

If Earth's atmosphere were to be enclosed, what effects would what have?

A universe-destroying parasite is set loose, and basically earth is placed under magical quarantine. (Think of it like the world is wrapped in magical cellophane.) My question is, how would earth's ...
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8answers
423 views

How might a life-sustaining planet exist with an “atmospheric ocean”?

This might be a little difficult to explain, but basically: the concept of "atmospheric ocean" is a gas that is found pretty much everywhere on the planet. Probably very dense and sinks to the surface,...
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3answers
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What changes would be needed for humans to live in an ocean?

Taking genetic manipulation of humans to change them to live in other environments, besides maybe gills what other physical changes would need to be done for a human to spend 95+% time living in the ...
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5answers
326 views

Salty or fresh or brackish waters?

So this is a small map of all the continents on the small planet of Parsas Decem. As far as most of the rivers go, I’ve got it figured out. What I’m wondering is, can salt water flowing in from the ...
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2answers
505 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
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4answers
929 views

Could Bamboos Evolve Into Trees In the Past?

This question is based on a scenario on DeviantArt. The presented image is here: The description is as follows: By the start of the Cryocene, bamboo has become one of Serina's most successful ...
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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 ...
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4answers
456 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
259 views

Could a nomadic hunting society survive in a country without wind?

This question is similar to What would happen if there was no wind?, but the lack of wind is confined to a small portion of the planet. To make things concrete, the affected region is roughly circular ...
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4answers
396 views

Would a denser atmosphere hold in more moisture even if the temperature was exactly that of Earth's surface temperature? (Atmospheric Density)

(My world's details) I have a super-earth world. The surface of the world is shallower due to extra gravity, so shorter mountain ranges and fewer ocean depths. The world orbits a binary star system at ...
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6answers
172 views

How to remove most signs of past civilizations without destroying all life? [duplicate]

I am trying to generate broad ideas as to how to create a society with a refresh start. Where most signs of an advanced society (slightly more advanced then today's society) are gone but without ...
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2answers
4k views

What would a world with a 45 degree axial tilt look like

If an alternate Earth had an axial tilt of 45 degrees, what would the seasons look like? Being the most extreme tilt a planet can have before simply replacing North/South with East/West, obviously ...
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2answers
159 views

Thunderstorms but with Fire!

The planet is huge roughly four times the size of earth, with lots of hydrogen in its atmosphere (group A water in Hydrogen out, B water out.) it is also very humid. what do I do to have giant Storms ...
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3answers
241 views

Can a planet have warm or temperate climates within its polar regions?

Note: an edit has been made to the main question at the bottom A couple of years ago, I had a worldbuilding project which I have recently revived. I was relatively new to worldbuilding back then, ...
6
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3answers
373 views

Can a 25 mile high volcano form naturally on a desiccated desert earth planet?

The enormous shield volcano that this question was based on was held up by magic or God. It presented some very interesting conditions for alternate worlds so I thought I would develop that train of ...
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4answers
679 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 ...
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2answers
160 views

A semi perpetual gloomy climate is possible?

I'd like to know if a climate with snowy and gloomy winters and rainy and cloudy summers is possible. Because the climate of Russia in summer is sunny enough and the Icelandic ones isn't so snowy. So ...
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2answers
132 views

Longest “linear” natural formations

In an effort to gain inspiration for planetary formation and, at the same time, inspiration for governmental/territorial boundaries between residents of said formed planets, I've recently encountered ...
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2answers
193 views

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 by ...
6
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1answer
322 views

Could lakes of mercury exist on an Earth-like planet?

I am working on a planet that has insignificant (almost 0 degrees) tilt, no moon, rotates twice as fast as Earth. I intend to create quite an exotic "biome", so to speak, in a subtropical desert zone ...
6
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3answers
201 views

How to have people and big bugs at the same time

There's been a few questions about making big bugs before and the consensus in they can't get much bigger than 3ft or so (which in reality is still huge). Catch is, you need quite a bit of extra ...
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3answers
140 views

What cosmological/biological event could cause most if not all humans to go nocturnal?

I'd like to keep this as science based as possible. I'm not even sure if this sort of question fits this exchange. Is there a possible world wide affect that when triggered (by human/cosmological ...
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2answers
343 views

Humanoid evolution

Background We all know that our species evolve during and after the last ice age, (or is it sufficient to say that they evolve at the end of ice age?). A. Initial Condition Suppose I had another ...
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5answers
771 views

Postapocalyptic, Venus-like planetary atmosphere

This question is about the same postapocalyptic future setting as this one, so you might want to refer to it, if you have any questions… about my question: What species, if any, would survive this ...
6
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1answer
167 views

What tree type grows into the most dense forests?

"Tree" is (apparently) not a very well defined term as far as scientific classifications are concerned, so I'll put my own restrictions on it for this question: Typical healthy adult specimens must ...
6
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2answers
369 views

Could a plant-like forest or jungle form in an underground lava dependent ecosystem?

Could an alien underground macroscopic ecosystem including human sized plant-like organisms evolve around lava as an energy source? These organisms could use heat and/or light from the lava to ...
6
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2answers
118 views

How to calculate the average temperature of a planet with greenhouse gases?

I am creating a planet with an orange dwarf as its host star and which is at a certain distance from it in such a way that it receives 1 % of the light received by the Earth from the Sun. Obviously, ...
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3answers
254 views

Environmental/meteorological effects of a superstructure

If there was a supermassive structure built on earth (30km tall, 10km wide/deep tower with slightly slanted faces), what sort of effects would this cause on the surrounding areas? Specifically, what ...
6
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4answers
174 views

A world without permanent water on the surface?

I'm building a small, naturally inhabited world where usable water is scarce or difficult to access. Is it possible to have a planet with groundwater, ice caps, temporary rivers and lakes, seasonal ...
6
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2answers
786 views

How would Weather and Regional climate work on a Flat world?

For my WIP's setting I'm using a variation of the Sky World concept. The cosmos looks very similar to the Astral Sea. The shape of the cosmos akin to a torus and filled with a silvery ether a thin, ...
6
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2answers
215 views

What ecosystems and possible sentient creatures would form in subterranean pockets?

I am building a science fiction universe, and I am currently thinking of many different unique sentient alien species that would populate the galaxy. I have thought of a rocky planet with Earth level ...