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Questions tagged [climate-change]

For questions about planetary climate change.

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44 votes
27 answers
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How could a time traveler have prevented climate change [closed]

Let's say a Moon colonist in the future has discovered an alien time machine. A small remnant of humanity still exists on colony worlds in the solar system, but due to runaway climate change, they are ...
James's user avatar
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44 votes
6 answers
14k views

What if a portal is opened from the Mariana trench to the Sahara desert?

The first portal is placed at bottom-most point of the Mariana trench (the deepest part of any ocean, located in the western Pacific Ocean) and the second is placed in the Sahara desert in Africa at ...
McGucket's user avatar
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34 votes
17 answers
16k views

Dropping ice in the ocean to stop global warming

In the TV show Futurama, an in-show infomercial mentions that Earthicans started dropping giant ice cubes in the ocean to slow down global warming. Now, Futurama is a show where science is a mixed bag:...
Nzall's user avatar
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29 votes
9 answers
6k views

Keeping an "hot eyeball planet" wet

Consider such a tidally locked planet: Many issues with tidally locked worlds have been discussed, but I'm not clear on how the water cycle for an otherwise Earth-like tidally locked world, would be ...
aadv's user avatar
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21 votes
9 answers
8k views

How big would a satellite need to be to block out the sun?

I have a story idea that involves a human attempt to halt and reverse global climate change. The idea is a simple one - a satellite that partially blocks out the sun. The satellite is located at the ...
Coomie's user avatar
  • 499
18 votes
6 answers
3k views

What measures might an ancient civilization take to protect itself from extreme heat?

An ancient human like civilization exists on a planet like our own but warmer, with more deserts and smaller oceans. Climate change is forcing the daytime temperature slowly upwards. What measures ...
Slarty's user avatar
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16 votes
4 answers
2k views

How many "years without a summer" can society survive?

In 1815 Mount Tambora erupted throwing so much dust into the atmosphere that the year became known as "the year without a summer". *There were a few other mitigating factors but Tambora is thought to ...
EveryBitHelps's user avatar
15 votes
8 answers
9k views

What would Earth look like at the beginning of 22nd century if temperatures rose by 30 degrees Celsius?

The beginning of 22nd century. Temperatures on the globe rose by 30 degrees Celsius over decades, because humanity was unwilling to stop greenhouse gas emissions. How would the surface of Earth look ...
DarklingArcher's user avatar
14 votes
8 answers
3k views

How to keep critters out of my flooded skyscrapers?

Overall setting -- "loosely future Earth," say a hundred years from now, with plausible levels of realism (doesn't have to be perfect, but should feel familiar and match intuition). Climate ...
Richard Rast's user avatar
13 votes
13 answers
6k views

Is this state of Earth possible, after humans left for a million years?

It is the year 4056 (or probably later). The rocket with the last residents of Earth just took off, because global warming and pollution couldn't be stopped nor reverted and Earth became uninhabitable....
Gistiv's user avatar
  • 351
13 votes
3 answers
1k views

Can one nation purposefully, inconspicuously, cause global warming?

The People's Dominion of North Kadana is an arctic isolationist dictatorship, with lots of territory but it is all barren frozen tundra. Their plan: heat up the world by a few degrees, making their ...
KeizerHarm's user avatar
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11 votes
11 answers
3k views

How do I explain a big flooding event that happened while still having a cold planet?

On the planet I’m making, there was a big flood that happened and raised the sea level by 30 meters. I want the planet to have a cold climate, so I can’t simply explain the flood by saying it was ...
Katze's user avatar
  • 569
11 votes
3 answers
742 views

How much of the sun's light would have to be blocked for the Earth to become uninhabitable?

For context: I'm writing a story where the main antagonist is an empire that builds Dyson swarms around every star they can get their hands on. The protagonist lives on a planet around one such star, ...
roundwoodsmonster's user avatar
10 votes
9 answers
4k views

What would a city look like that adapted to sporadic tsunami-like flash floods?

In a near future where super-cell storms drop massive amounts of water (300 l/m²) in the blink of an eye, cities - built upon the cities of old - have adapted to these tsunami-like flash floods. But ...
Pica's user avatar
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10 votes
3 answers
782 views

Time estimate for converting desert to savanna/forest

I'm building a world in whose history climactic changes causes a region of desert to start seeing regular rain. This causes the native culture of the desert people to also change along with it, ...
Baron_vonCernogratz's user avatar
9 votes
4 answers
720 views

What kind of natural disaster could create a permanent, global cloud cover?

“Permanent” here meaning “significant over geological timespans”, so it would have to last at least 10,000 years and produce a thick enough layer of clouds that it would cover the entire planet in an ...
Z. Schroeder's user avatar
  • 1,015
9 votes
3 answers
324 views

What average global temperature would optimize Earth for human habitability?

The year is 2100. While climate change has wrought serious damage to the biosphere, humanity has at last managed to become carbon neutral, and has even developed technology that can be used to reduce ...
ckersch's user avatar
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8 votes
4 answers
693 views

Is a post-climate apocalypse city in which many or most insects have disappeared realistic?

Supposing climate change continues at its current "worst case" projected rates, would we see a noticeable reduction in insects down the line? I am wondering if it makes sense to have a character who ...
gumbiecat's user avatar
8 votes
5 answers
723 views

What would happen if we built a huge cofferdam around Hawaii and drained the water?

I had an idea for a sci-fantasy story set in a far future where there are primitive human settlements at the base of Mauna Kea who are unaware that they're actually dwelling on the sea floor of the ...
Gwood's user avatar
  • 83
8 votes
3 answers
437 views

Plausible futuristic infrastructure for an underwater micronation built 300-500 feet below the surface

My story takes place hundreds of years in the future after global warming has made life at the surface uninhabitable for most life forms. What’s left of mankind survived because it became popular to ...
HR Allsop's user avatar
8 votes
1 answer
248 views

Maintain atmosphere on moon using global warming

So, a neat thing, depending on how you look at it, about greenhouse gases is that while it's causing a raise in temperature near the surface it actually makes the upper parts of the atmosphere ...
rclev's user avatar
  • 787
7 votes
5 answers
2k views

Could Comets or Meteors be used to Combat Global Warming?

The running theory is that if the Earth is hit by a sufficiently large meteor, that the impact would create an ice age from all the dust it would put into the atmosphere. While this has been ...
Nosajimiki's user avatar
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7 votes
5 answers
1k views

Can satellites decrease global warming?

An island nation has a lot of coastal territory and has become gravely concerned about the threat of global warming. They've decided to fix this by launching reflective satellites into orbit -- ...
Dan B's user avatar
  • 1,943
7 votes
3 answers
333 views

Can black algae promote a global warming on a cold planet?

My world is at the outer edge of the habitable zone. There is enough heat and geological activity to start life, but a snowball earth is looming and threatens to freeze it all. There is some spring ...
Christmas Snow's user avatar
7 votes
3 answers
451 views

Preserving the mammoth steppe

During much of the Late Pleistocene stage, the world's most widespread biome was the so-called "mammoth steppe" - a cold, dry grassland which spanned eastward all the way from Spain to Canada. It was ...
SealBoi's user avatar
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6 votes
5 answers
2k views

How Could an Organism Evolve "Unintentionally" into a Cyborg?

Let's say there is an ecosystem with lots of familiar organisms. Bacteria, plants, fungi, metazoans. Then a great deal of high-tech waste is introduced into that ecosystem. First, is there any way ...
anarchosnail's user avatar
6 votes
4 answers
28k views

What would an Antarctica without ice look like compared to other continents?

Lets suppose that Antarctica at some point lost most of its ice (due to global warming or some other plausible reason) and now most of its bedrock surface is exposed. Compared to other continents, ...
Notaras's user avatar
  • 1,367
6 votes
4 answers
1k views

What adaptations would be advantageous given a regular, but extreme variation in climate?

In a fantasy world I am constructing, a planet goes through regular, but extreme temperature cycling. Roughly every 500 years, the planet begins to heat or cool, dependent on its current temperature. ...
Zer0ah's user avatar
  • 333
6 votes
5 answers
544 views

Is it possible to have (near future) satellites that appear to rise and set like the sun and moon?

And if I wanted them to appear about 10 times the size of the sun and moon, would this be possible? Should they lie inside LEO or beyond it? I would like their orbit to be considerably closer than ...
M. Ching's user avatar
6 votes
2 answers
2k views

What would happen if the Panama Isthmus was turned into an island chain?

I understand that the Panama Isthmus is necessary for the Gulf Stream, but what would happen if instead of a solid land bridge, like shown below, it was radically changed into a series of islands ...
Sage Grant's user avatar
6 votes
3 answers
583 views

Are there semi plausible scenarios where Nuclear Winter could last a thousand years or trigger an ice age?

Trying to develop a fictional scenario with a 'believable' theory as to how a Nuclear War and resulting Nuclear Winter could turn into a millennial scale ice age. By 'believable', I mean that it ...
John D's user avatar
  • 164
6 votes
3 answers
585 views

Could you actually make a green space program?

Is it plausible to build and maintain a space program without adding to climate change? While obviously there are larger problems in the near term with respect to climate change, I'm thinking about a ...
Adam Reynolds's user avatar
6 votes
2 answers
394 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 ...
Justin Thyme's user avatar
  • 9,640
6 votes
3 answers
935 views

What would happen to the climate if Earth's sea-levels rose 2000m?

This is the first of possibly several posts about the following scenario, in which Earth's sea-level rises 2 km overnight, generating a world map looking like this: Question: What would be the ...
Montefeltro's user avatar
  • 1,545
6 votes
3 answers
909 views

Would a permanent rain be possible?

Would there any scientifical explanation to a permanent rain (at least 2 years) everywhere on Earth ? Climate-change ? My best explanation at this point is accelerated ice cap melting. There must be ...
user21102's user avatar
6 votes
3 answers
180 views

Which marine organisms would survive this longer Paleocene-Eocene Thermal Maximum?

56 million years ago, Earth underwent the greatest rise in temperature in the last 100 million years. In just 20 to 50 millennia, the global temperature had risen by five to eight degrees Celsius (...
JohnWDailey's user avatar
  • 14.5k
6 votes
3 answers
159 views

Nesting abilities of migratory interdimensional creature

I'm waving hands a fair bit here, and I am doing that because I believe that it is internally coherent, so if you accept these things, you shouldn't need the story to suggest answers. I'm including as ...
Niko Greenwood's user avatar
6 votes
2 answers
277 views

How plausible is this volcanic eruption event? Dark Age without total extinction of Stone/Bronze/Iron Age people?

At the end of the desert's westward Great River (think the Nile in Egypt) there is a volcanic island called Harek-Set. Its black mountain is a hotspot volcano which produces obsidian and makes the ...
Maddock Emerson's user avatar
6 votes
1 answer
306 views

Underground cities in a Glacial Climate Transition?

My story is based on a Glacial Climate setting or an Ice Age. However the transition is gradual and humanity was given some time to adapt. The transition began in our real-world technological ...
user avatar
6 votes
1 answer
257 views

Could an earthquake alter weather over the long term, and therefore climate?

I live in Cape Town, South Africa where it is a very real possibility that not a single drop of water will be left in our dams come March 2018. THIS is a news article that suggests that at a ...
Zach Smith's user avatar
5 votes
7 answers
2k views

The possibility and possible backlash of a thruster large enough to move a planet

Inspired from the game "Planetary Annihilation" a Halley Delta V Engine is a engine built in the ground that is big enough to move the planet when used. This can be used for two things in my mind. War,...
Micah Da Canon's user avatar
5 votes
4 answers
549 views

Increasing Earth's orbital radius to stop global warming

Followup from Dropping ice in the ocean to stop global warming as promised. In the Futurama episode "Crimes of the Hot", All earth robots fire their engines at the same time at the Galapagos islands. ...
Nzall's user avatar
  • 8,439
5 votes
4 answers
360 views

How might a naturally-occuring geographical barrier between two areas *suddenly* become permeable so that a few people can cross it?

The world is Earth, probably west coast of the USA, in the throes of severe climate disaster; major storms, earthquakes, droughts, fires and floods are the norm. I am looking for a way to suddenly ...
olive banks's user avatar
5 votes
3 answers
1k views

What if all life disappeared from the earth?

What if all life (plants, animals, bacteria, fungi, and everything from the smallest cell to the largest whale) disappeared instantly? And here I don't mean things related to the disappearance of ...
Bowman's user avatar
  • 619
5 votes
4 answers
240 views

In an Earth with massively spiked CO2 content, how might survivors set about reducing that content?

Some cataclysmic event has transpired on planet Earth in the not-too-distant-future, and the outside air is now thick with CO2, causing all of the problems that come with it. Human beings can no ...
NegativeFriction's user avatar
5 votes
3 answers
172 views

Florida during climate change: what does it look like?

Edited again! My character lives in a future where some folks have moved under the sea, and sea levels have risen. There are scenes where she comes up to the dry land, and I need to describe the city ...
E. Delaney's user avatar
5 votes
6 answers
495 views

Global warming in an apocalyptic future?

In my world, there's a global apocalypse that wipes out humanity, but I'm wondering how global warming might continue even with the lack of additional greenhouse gases. If emissions suddenly stopped, ...
Papa Solen'ya's user avatar
5 votes
2 answers
380 views

Would building a large underwater dome be possible with European Renaissance technology?

So my novel setting is a pseudo-European continent that is at a Renaissance level of technology, and over the past century has experienced rampant sea level rise. I’d imagine that this would present a ...
user2532642's user avatar
5 votes
2 answers
440 views

Reducing atmospheric pressure on Snowball Earth

A Snowball Earth is a global condition (which may have occurred many times) in which the temperature everywhere on the surface was, for extended periods (up to tens of millions of years), below the ...
Escaped dental patient.'s user avatar
5 votes
2 answers
250 views

Would the melting of ice islands affect the weather across the seas?

I've studied a little about glacial melting and temperature changes in sea currents and worldwide. I couldn't find any definitive answer and since I'm no expert on this matter I'm a bit confused. The ...
Faed's user avatar
  • 1,781