Questions tagged [apocalypse]

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

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0answers
53 views

What kind of apocalyptic chaos would it be if nobody can do their jobs? [closed]

Let's suppose that something terrible (Zombie apocalypse, disparition of 99% of the population, that kind of thing) make that nobody (or almost nobody) can do their job. As I think about it, I can ...
3
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3answers
123 views

Would it ever be theoretically possible for future humans to prevent the sun from increasing in luminosity to the point of killing all life?

I am currently brainstorming a hard (like the hardest possible; everything that occurs in the story must at least be theoretically possible) sci-fi story which will take place far in the future. I don'...
3
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3answers
166 views

Which human-made monuments would still be standing thousands of years after an apocalyptic event? [duplicate]

It has been several thousand years since an apocalypse happened. The cause was some kind of explosion, be it nukes or a extinction-event meteor. Humans have persisted, as they do, and have effectively ...
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1answer
111 views

To what extent would a 21st Century Industrial power collapse under an airborne HIV-like virus? [closed]

In an alternate 21st Century Earth, an airborne strain of HIV, or a brand new airborne virus that causes the same symptoms of HIV evolves. The new Super-HIV virus retains the ability to transmit by ...
0
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1answer
70 views

Land and sea are infested by giant carnivourous squid/crab things. How do I survive? [closed]

So, recently, a bunch of Kraken eggs have hatched, bringing them back form a few centuries of extinction for unknown reasons. Also, turns out that when their sea-based population gets too high, some ...
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1answer
95 views

How would Europeans fend themselfs in a Zombie apocalypse? [closed]

Most of zombie apocalypse movies, series, comics, etc. are set in the United States, but how an outbreak look like in European countries? Would it be different at all?
3
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7answers
212 views

If an evil AI has access to the Internet, what are the options that it has to kill humanity? [closed]

Let's suppose that a mad developer made an evil Artificial Intelligence and gave it access to the Internet (normal net, dark net, anything). What are the options that it has to kill humanity with that?...
5
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5answers
206 views

Realistic powers in an apocalyptic/post-apocalyptic setting

In most apocalyptic settings(specially those with a zombie-kind of plague) the main character(s) only have very mundane means to deal with their problems and those always have a catch: any gun they ...
5
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4answers
183 views

Why can't our self-replicating message in a bottle stay in Sol?

Suppose we knew of an extinction level event in a few decades, and through a large Manhattan Project-type effort humanity manages to construct a von Neumann probe with a copy of all human knowledge. ...
12
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10answers
502 views

How to make FTL-technology an narratively interesting suicide-pact-technology?

Building my sci-fi setting deciding what's the in-universe answer to the Fermi-paradoxon, the reason why the universe still seems to be empty of K3 civilisations despite its age, has been quite ...
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3answers
186 views

Which domestic animal would pose the greatest threat to humanity during zoopocalypse?

Set in the modern days, one night the sky is suddenly lit up in a mysterious bright blue glows that fades off almost immediately. It seems that somehow the event caused a mutation in one of the ...
5
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7answers
350 views

Citywide Abandonment of Law Enforcement at World's End?

Building out a place less than 100 years in the future where the world is finally in agreement that it's coming to an end, in about 10 years or less. The air is trash, high government people are in ...
3
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3answers
177 views

Tetrodotoxin: the end of the biotic era?

Tetrodotoxin (TTX) is a potent neurotoxin and extremely toxic. The Material Safety Data Sheet for TTX lists the oral median lethal dose (LD50) for mice as 334 μg per kg. For comparison, the oral LD50 ...
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2answers
110 views

How long until land life can return after the impact?

So, it finally happened. The Earth was hit by a comet, and anyone outside of a research station at the bottom of the Atlantic is now dead, or dying. So, here's what we need to know: How big would a ...
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2answers
105 views

Is it possible, with modern technology, to hold a small planet in place?

In one of my universes, Humanity found a so-called "world anchor" on the Moon. They removed the anchor and returned to Earth. A few days later, the Moon exploded and a planet about the size of Mars ...
5
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4answers
81 views

Genetic engineering to cure a disease leading to a worldwide apocalypse - how plausible is it? [closed]

I'm planning on writing a story in a post-apocalyptic world where normal humans are hunted by genetically modified predators, both human and otherwise. However, I first actually need to create this ...
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4answers
332 views

The moon will fall to earth in 100 years, how fast is the asteroid that knocked it down?

We have at most 100 years to abandon earth. The 10-km asteroid which killed the dinosaurs has hit the moon head-on instead. As a result, the moon has slowed down and it’s orbit will decay by 400,000 ...
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5answers
1k views

How might people try to stop the world becoming a rogue planet?

I'm working on a story about Earth or an Earth like planet with current or very near future levels of civilisation and technology drifting or speeding out of the solar system. Currently my method for ...
3
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9answers
341 views

Why might someone be the last person alive in the galaxy? [closed]

I'm writing a science fiction story about a man who has to rebuild civilization from the ground up after all intelligent life in the galaxy is destroyed. (Using gene samples, seed banks, etc.). But I ...
7
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18answers
3k views

How does an alien race from a dying world annihilate most of humanity to colonize the planet for themselves?

The Stackexhangerians live on a habitable, earth-like planet near Alpha Centauri. Problem is that their world is dying. Let's say it was attacked by yet another race of hostile aliens, and most of ...
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14answers
4k views

What is the most REALISTIC cause of a worldwide catastrophe/apocalypse in the near future? (next ~100 years) [closed]

Trying to figure out a post-apocalyptic scenario and looking to stay somewhat within the realm of possibility. Given how tech levels MIGHT be in a 50 years, what would you say would be the most likely ...
4
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3answers
312 views

Would measles make a good apocalypse?

Let's say terrorists wanted to release a bioweapon that could deal with most of the world's third world population, and they developed a chimera disease that was essentially the measles, but with ...
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2answers
108 views

The World of Coa, Cosmic Rays, Skynet, and Solving the Pig Apocalypse [closed]

Coa The world of Coa, filled with humanoid species, has been at peace for centuries. Following the unification of the species under the governance of Mother, all military systems have been forsaken. ...
2
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1answer
173 views

How big would an asteroid have to be to destroy 99.9% of the human population? How would the remaining survive? [closed]

Let's say that a mega-asteroid is heading towards Earth. I want it to destroy essentially the entire population except maybe a few million people around the world. Now, I know that for an asteroid of ...
6
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3answers
239 views

How much damage could a complete loss of technology cause?

I'm working on an idea for a story. It takes place in the somewhat distant future, say 200-300 years. Some time between now and then, an event occurs which causes all computers to simultaneously fail. ...
15
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6answers
2k views

2 weeks and a tight budget to prepare for Z-day. How long can I hunker down? [closed]

tl/dr: The zombies are coming. The first will "show up" in two weeks. I have about $3000 to prepare and my plan is to hide in my home for as long as possible. I need to secure my house, buy ...
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7answers
3k views

What is a reasonable time for modern human society to adapt to dungeons?

TLDR: how long would it take modern day humans to adapt to an incident where dungeons appear on earth and spits out monsters? I am writing a fantasy/apocalypse novel set on modern day earth. One day,...
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1answer
247 views

How long would it take for society to rebuild itself? [closed]

Humanity creates a new technology that discovers these strange crystals (on Earth) that produce a little bit of electricity. There's now a race for mining them, and the whole world is going crazy over ...
24
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10answers
12k views

Could human civilization live 150 years in a nuclear-powered aircraft carrier colony without resorting to mass killing/ cannibalism?

An un-treatable virus starts infecting and killing people. Societies are on the brink of collapse, and it is decided the best way to save the most amount of people is to move everyone who can fit into ...
3
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2answers
171 views

Deadly virus going extinct - “grey goo” a solution?

With the evolving global warming and thawing of permafrost, an ancient deadly virus begins to spread from Siberia across Eurasia, affecting domestic animals first and mutating quickly onto the rest of ...
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7answers
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How large would a mega structure have to be to host 1 billion people indefinitely?

Ruins of buildings, abandoned cities and suburbs dot the coasts of Earth's landmasses, inhabited by wild animals and the pieces of a once vibrant civilization. The oceans are relatively empty, the ...
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3answers
276 views

Firearm ammunition surviving 200 years

OK - breakdown in society - economic apocalypse in 2030 - society breaks down and the supply chain of what we take for granted fails. 200 years later we have regressed to a technological period of ...
9
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9answers
618 views

How to destroy a galactic level civilization and still leave behind primitive survivors?

Basically, the problem is I want to leave behind isolated pockets of survivors. Also, I want these survivors to be a primitive culture - current real world level - compared to the original ...
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5answers
229 views

How to annihilate all life on a planet? [duplicate]

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6answers
1k views

Would the US government be able to hold control if all electronics were disabled for an indefinite amount of time? [closed]

In my story (modern fiction/ apocalyptic survival fiction) an enemy of the US sets up a EMP pulsing satellite over the continental US, and before we can respond all electronic systems are shut down. ...
6
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11answers
486 views

What type of natural or artificial disaster could devastate a multi galactic civilization?

There is an advanced civilization that spans multiple galaxies. The civilization has learned to tap every available source of energy within the volume that it has colonized. The civilization ...
9
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8answers
538 views

What survivable events would make Earth least inhabitable?

I am interested in events that would so radically change Earth (for the worse) that it would be near uninhabitable for humans. The event may or may not be deadly to humans, but the world it leaves ...
3
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2answers
163 views

Is it possible to engineer airborne Ebola?

In my world, a mad scientist wanted to end humanity and he was looking for something with a high mortality rate. He found Ebola. But it's not airborne though. Could it be possible to genetically ...
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5answers
205 views

A fast apocalypse with survivors, but very low chance of rebuilding [closed]

I need an event which could make the world go from "similar to today" to post-apocalyptic in one lifetime, preferably in 20-40 years. It needs to happen fast, because I want to focus the story on ...
12
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6answers
4k views

What would happen to a modern skyscraper if it rains micro blackholes?

Set in present day New York City, an unknown spacecraft of alien origin expelled millions of micro blackholes each with the mass of a grape in the earth atmosphere. I like to know what happens if ...
14
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12answers
3k views

Little known, relatively unlikely, but scientifically plausible, apocalyptic (or near apocalyptic) events [closed]

We know the common tropes for an apocalyptic event: meteor/asteroid hits earth; crazy infectious virus/bacteria; AI takes over; we nuke ourselves; climate change; hostile aliens. But what are some ...
15
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4answers
326 views

Can I X-Ray a civilisation to death?

Something in orbit around an inhabited planet blasts it with a hefty dose of gamma rays/x-rays/something else, killing everyone within a relatively short time frame (hours or days) but leaving no ...
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17answers
7k views

Need a specific event that wrecks the surface, allows the race to survive in bunkers, and affords an aftermath suitable for them to rebuild

One rule: it cannot be caused by aliens or AI invading the planet. But it is okay if an alien race causes the destruction in any other way. It's an Earth-like planet. I need the effects of the ...
2
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2answers
210 views

What would annihilate life on a planet but allow it to be habitable 1-10 years later? [duplicate]

I'm writing a fantasy/sci-fi story. Imagine an alien race, about as advanced as any sci-fi alien race has ever been depicted in any REALISTIC medium. They're gonna target an earth-like planet. I need ...
2
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2answers
143 views

Apocalypse by Atomic Catalyst

This question is a continuation of Unprepared and Without a Homeworld. The premise of this idea is that a substance called an Atomic Catalyst exists that can lower the temperature at which particles ...
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22answers
4k views

How could a plague that killed off the dinosaurs come back?

In my story, something pretty insane happens during the 3rd season. The common conception was that an asteroid strike contributed to the extinction to dinosaurs, but unbeknownst to all it was not a ...
15
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3answers
2k views

Plastic and oil eating microbes apocalypse part 1 - How fast can they spread?

Plastic is a huge problem in our lives. One of the ideas is to engineer plastic eating bacteria or fungi. Experiments already begun, and accidents already happen: a team of international scientists ...
20
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5answers
7k views

How long could a nuclear warhead remain functioning underground?

So, in my world, a nuclear war engulfed the Earth in the autumn of 1962. It is now the year 2568. In my story, a cult of mutants known as “The Followers Of Uranius” have sprung up in Kansas City. ...
2
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5answers
367 views

With an impending cataclysmic event, when would the economy break down?

Motivational musings: If there was an impending, unavoidable, and universally accepted cataclysmic event that will absolutely destroy everything, how long would it take for the economy to break down? ...
9
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5answers
3k views

How many horses would be required to pull a modern Caravan

I'm currently investigating a post-apocalyptic novel and wished to know if Horses could be used to pull a modern Caravan and if so how many. Furthermore what would the potential daily range of such a ...

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