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Questions tagged [climate-change]

For questions about planetary climate change.

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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
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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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
  • 699
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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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
  • 665
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
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
4 answers
545 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
3 votes
4 answers
1k views

Nuking all the ice

I've been trying to envision a scenario where global warming is accelerated to the fasted possible speed. One scenario I thought of was detonating large scale nuclear warheads on the North and South ...
Thom Blair III's user avatar
44 votes
27 answers
15k views

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
  • 1,105
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
9 votes
4 answers
719 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
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
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
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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
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
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
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
4 votes
5 answers
373 views

Post- Nuclear Holocaust. Radioactive wastelands vs eco-system and chances of human survivability?

I'm attempting to flesh out the history to a sci-fi novel I'm currently writing, which is set in the future. Several hundred years prior to the beginning of the story, lack of resources lead to ...
Nicky Pritchard's user avatar
2 votes
3 answers
986 views

Do hurricanes reduce the thermal energy of the water they pass over, and if so by how much? [closed]

This question suggests a theoretical possibility that hurricanes may be disrupted by removing heat from the system. My question concerns the natural passage of a hurricane. Ocean water is warmer ...
SFWriter's user avatar
  • 3,813
-1 votes
5 answers
248 views

Would solar energy have been viable during the extinction of the dinosaurs?

I've been imagining a world where several coincidental factors drastically reduce the temperature of the world, leading to global cooling. Lots of snow may be involved, but I imagine there would be ...
Robin R.'s user avatar