Questions tagged [apocalypse]

For questions dealing with events during an apocalypse scenario. Do not use for post-apocalyptic settings.

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14
votes
10answers
3k views

What would happen if a virus could not be cured or contained?

I would like to know what would happen if a new virus arose which could not be cured and which managed to escape the infected areas (and any quarantine zones). In order to scope this question I'm not ...
50
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16answers
22k views

What should three men and three women do if everyone else is dead?

Recently, I asked what could kill all humans except for those in low orbit. Out of the answers that popped up (which included the Ragnarök), I picked a plague as being the most desirable for my ...
14
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3answers
984 views

What would have to happen in order to force us to live in the ocean?

What kind of a scenario would have to occur in order for human beings to seek survival on the sea floor? It could be man made or natural, ice age or heat apocalypse, sudden disaster or gradual ...
8
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3answers
1k views

Use Physics to prove Ragnarök has already occurred

This question asks what would happen to the solar system if the sun vanished for about three days, the mass and energy of the sun simply ceasing to exist. This answer (as of this question, anyway) ...
67
votes
12answers
16k views

Could a disaster kill all (human) life on Earth but leave astronauts in low orbit alive long enough to return?

There are plenty of threats out there that could terminate all life on our little planet in varying amounts of time (Solar flares, meteors and supernovas to name a few). Are there any disasters that ...
15
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3answers
1k views

Repopulating humans AND zombies

So most zombie apocalypse stories involve wiping out 99.9% of the human race and having a small minority survive to try and keep living. But, let's say I want society as we know it to collapse, but I ...
12
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4answers
768 views

Surviving in buildings

Setting: Large city full of tall buildings, plus zombies The survivors have taken to the higher floors of the buildings. The streets are very dangerous, so going down there is only for emergencies. ...
16
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6answers
5k views

How to quarantine a major city?

We have an outbreak of a zombie-like disease in major metropolitan areas. The disease itself has a slow incubation period, and after a time it becomes clear that it is spreading faster than they can ...
18
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9answers
4k views

What kind of event, if any, would knock the moon off its orbit, without destroying it?

I am recalling the Space:1999 nuclear waste containment explosion; this has been criticized because such an explosion would have actually destroyed the moon. I am curious for events that could happen ...
8
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8answers
434 views

Is it possible for a world-wide plague to start off as seemingly different diseases?

In the case of a world-wide plague epidemic that'll trigger the near extinction of humanity, is it possible that a virus/disease has inconsistent symptoms so that people aren't aware that it's really ...
13
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2answers
2k views

How would a planetary nebula affect a planet?

Let's say I have a binary star system. The planet is orbiting the smallest star similar to the Sun at 1 AU, the same Earth-Sun distance. The other star is located at around 50-100 AU from the Sun ...
21
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18answers
3k views

Repeatable, Unavoidable Cataclysmic Events

Lets say you had a planet which has held many, many prosperous civilisations, each one technologically advanced but not space faring, what sort of cataclysmic events could wipe each one out which are ...
20
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6answers
4k views

Is there a man-made or natural event that can cause an abrupt climate change within hours/a day?

Meaning, cause a seemingly normal winter to suddenly take a turn within hours or a day/two into a completely frozen territory? From what I've read, abrupt climate change happens from ocean currents. ...
19
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3answers
10k views

What is the likely method of surviving a Tsunami in a city?

After asking this question, What's the worst natural disaster that could hit New York City in our lifetime, it looks like the most popular answer was a Tsunami. A tsunami, however, from the sources of ...
11
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4answers
3k views

If Yellowstone experienced another level 8 eruption on the VEI scale, what are the largest geographical implications?

I'm building a post-apocalyptic setting where the cataclysmic event is a volcanic eruption from Yellowstone that releases a blanket of ash that reaches from California to just before the Midwest. ...
14
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9answers
4k views

What's the worst natural disaster that could hit New York City in our lifetime? [closed]

I'm writing a post-apocalypse story that takes place in New York, mainly the city as the survivors escape the island to the outer boroughs. Anyway, living in New York all of my life, the worse that I'...
15
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6answers
3k views

Could a computer take over an entire planet?

The inspiration for my question comes from The Great C by Philip K Dick. To summarize, the Great C is a computer that has taken over a large portion of the planet. It uses proxy agents to keep ...
14
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7answers
1k views

Methods of containing/combating “grey goo” Von Neumann nanomachines?

The grey goo end-of-the-world scenario in which lots of little microscopic Von Neumann self-replicating machines basically eat everything to make more of themselves. Eventually everything is grey goo....
47
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17answers
3k views

What would be the most effective way of keeping a psychopath with a spaceship from wreaking severe havoc in a suicide crash?

Any spaceship over several hundred tons is an extremely dangerous weapon in the wrong hands, particularly if it's intended for reentry. Made mostly of metal and possibly shaped to be able to breach ...