Questions tagged [climate-change]

For questions about planetary climate change.

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34
votes
17answers
12k 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:...
21
votes
9answers
6k 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 ...
39
votes
6answers
12k 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 ...
5
votes
4answers
372 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. ...
5
votes
2answers
296 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 ...
3
votes
4answers
805 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 ...
43
votes
27answers
14k 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 ...
18
votes
6answers
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 ...
8
votes
1answer
132 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 ...
8
votes
4answers
485 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 ...
5
votes
7answers
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,...
5
votes
4answers
237 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 ...
4
votes
5answers
373 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 ...
3
votes
4answers
14k 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, ...
2
votes
3answers
813 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 ...