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Questions tagged [post-apocalypse]

For questions dealing with events taking place after a catastrophic event.

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21
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7answers
6k views

Can capybaras spread to Louisiana from Venezuela and populate it in less than 1000 years?

Some hundreds of years ago, all humanity was removed from the Americas. In fact, most humans are gone from the world altogether. In the intervening time, nature has overrun the formerly human ...
21
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6answers
1k views

How good are vets as doctors?

I am toying with a scenario in a RPG where the catastrophe has happen (financial desaster, meteorite hit whatever) which has wiped out large parts of humanity and caused a complete breakdown of ...
21
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11answers
4k views

How many major cities would need to be destroyed by nuclear strikes to completely disable the world economy?

Post-apocalyptic scenario: What would be the minimum number of cities (financial/transport hubs, e.g. New York, London, Beijing etc) that need to be taken out by nuclear weapons or other means which ...
20
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10answers
4k views

How long would a single metropolis last if all other signs of human civilization vanish?

One morning, suddenly, all humans and any human-crafted things (roads, buildings, technologies ...) vanish, with the only exception of one single city and its inhabitants. How long can the metropolis ...
20
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11answers
6k views

How would purely underground settlements find and trade with each other?

The world's been hit with an apocalyptic event, and humans are forced underground for survival inside large bunkers suited to house a couple thousand people. The bunkers are well supplied with modern ...
20
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13answers
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What non-intuitive modern items would be useful in a medieval-ish world?

The world is similar to that in Prince of Thorns: namely, so far in the future that civilization has essentially reset, and is back to a medieval level of technology and culture. However, there are ...
20
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16answers
3k views

What would cause the land to “rise” in a future, post-apocalyptic world?

We are in the future in northern North America (U.S or Canada). The land has "risen" (or more accurately, filled in) with several hundred feet of earth and sand and silt so that a modern city will ...
19
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9answers
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All of the freshwater on Earth has suddenly vanished - would humanity survive? [closed]

Consider a scenario where all freshwater on Earth suddenly disappeared... Would the planet remain habitable? Definition of water removed: Everything in this chart under the category 'freshwater', ...
19
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4answers
2k views

In a post-apocalypse world, with no power and few survivors, would Satnav still work?

Assuming: there was no power, so there was no web/internet you had a mobile phone (one of the smart ones, not a basic one) powered by solar the phone had maps downloaded on to its memory card (so you ...
19
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6answers
5k views

What would iron-age tools and weapons be like if they were redesigned with modern metallurgy?

I am a skilled metallurgist and engineer and, like most well-educated people, I'm terrified by the possibility of an impending apocalypse. Let's not worry too much about what form it takes. Nuclear, ...
18
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6answers
4k views

How long can I keep my truck oiled after the Apocalypse?

Background The Apocalypse came on Tuesday, and no one was ready. For us soft city folk, survival was mostly a matter of luck. If you fell in with the right group of people with the right skills and ...
18
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6answers
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So we've survived the apocalypse. What's next?

The year is 2032. The location, rural midwest North America. A decade ago, a plague wiped out almost every living human. There weren't even enough survivors to bury the dead. Secondary plagues rose ...
18
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9answers
3k views

What would be a realistic, competent response from the rest of the world if Britain were wiped out by a zombie virus?

I am referring to the situation described at the start of the movie 28 Weeks Later, where Britain had been wiped out by a zombie virus, but the rest of the world was (seemingly) fine. What would be a ...
17
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7answers
6k views

What dog breeds survive the apocalypse for generations?

There was an apocalypse. Humans left cities in swathes, leaving their canine companions behind in the ruined cities. My question is, which types of dogs survive? Criteria -The dogs are going to be ...
17
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15answers
9k views

Could an American state survive nuclear war?

In a timeline where the USSR didn't collapse and the Cold War escalated into a full-blown nuclear conflict sometime around the year 2100, the world is left utterly devastated. Both the Soviet Union (...
17
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7answers
2k views

Currencies when known encryption systems become obsolete

Current Bank security is based on encryption, once quantum computing or another system to break security is invented all banks are unable to securely transfer money digitally. Assuming banks are ...
17
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13answers
3k views

Would concrete foundations and driveways be useful to a post-catastrophe survival group?

I had some interesting thoughts while walking my dog this morning. Let's assume there has been some catastrophic event that leaves the world habitable, but kills off a large amount of people (99% of ...
17
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5answers
2k views

What's the most convenient time of year in the USA to end the world?

This is a question I've been wondering about for a while. If I wanted to give my characters the best possible chance of surviving my story's Armageddon, what time of year should I schedule it for? ...
17
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5answers
6k views

Could the entire world have been destroyed by the existing nuclear arsenal in 1962?

Considering the nuclear arsenal that existed in 1962 during the Cuban Missile Crisis, could it have destroyed the entire world, following the events below? Edited question a bit: Considering the ...
17
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5answers
1k views

Would solar cells last?

Post-apocalypse how well would photo-voltaic solar cells hold up? They are solid state so I expect they would do okay for a while, but would they remain functional for 100+ years. I know that dust ...
17
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6answers
2k views

Time no longer passes except near intelligent creatures, how does the world continue?

Time stops nearly everywhere, time only continues in a area around creatures of a certain intelligence. The worlds population is suddenly thrown into darkness as time ceases throughout the universe ...
17
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4answers
2k views

What proof could Ragnarök leave behind?

Ragnarök is the Norse rendition of the apocalypse. A major event during this apocalypse is Fernir devouring the sun. If we assume that the sun and all of its influence disappear entirely for 3 days, ...
16
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26answers
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A catastrophe that wipes out the current civilization but does not make humanity go extinct [closed]

I'm looking for a catastrophe on a scale that can wipe out civilization as we know it, but humanity will not go extinct (i.e. humanity will start to thrive again after some time has passed, but should ...
16
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5answers
3k views

Is it possible for underground bunkers on different continents to be connected?

In a scenario I'm thinking of, the Earth has been nuked bare and a few remnants of humanity are surviving in their underground bunkers. Let's say there is one in North America, one in Central American,...
16
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4answers
2k views

Lifespan of abandoned buildings

I'm exploring a post-apocalyptic world and want to build a realistic scenario for the condition of abandoned ruins. What would you estimate to be the lifespan of the following building types? And by ...
15
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17answers
4k views

How to justify the absence of weapons

Think, a post apocalyptic world ravaged by nuclear wars. Most of the population has been eliminated. A small amount, but still a substantial number, a million or so people survive, residing in special ...
15
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5answers
14k views

How long can a power plant continue to generate electricity without maintenance by people?

The situation is as follows: there is a city with different districts, each provided with electric power from a different power plant: Thermal power plant nuclear power plant Hydroelectric power ...
14
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8answers
4k views

What could post-apocalypse humans do about dangerous, genetically augmented dogs?

So, out in Colorado, in the city of Den (population 1600), there is a huge problem. Before the war, a geneticist lab was trying to create police dogs that were stronger and superior to normal dogs. ...
14
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11answers
2k views

Post-apocalypse currency

It is a post apocalyptic world, all government systems have broken down, approx 95% of the worlds population is gone and the few survivors left are beginning to trade with each other. I need a ...
14
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9answers
2k views

What will remain from an eco-friendly civilization after 10,000 years?

Let us assume that about 10,000 years ago there was another human civilization, that was quite similar to humanity. Physically they are humans. The state of development of this civilization is quite ...
14
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11answers
4k views

Post apocalypse contraception

In a post-industrial collapse scenario, what would be the most effective methods for contraception? Situation is a small scale civilisation with limited access to industrial materials and tooling but ...
14
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4answers
2k views

Besides continental drift, what could affect the map of Earth hundreds of millions of years from now?

I'm working on a fantasy/sci-fi story set on Earth but in the far future. Hundreds of millions of years from now, after the rise and fall of many civilisations, the world has gone back to a medieval-...
14
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3answers
386 views

Train-World: Storing RHUs for decades to centuries

...no, I mean, supposedly, I believe there is more about it than mere kans on our part. Installations like this one are found all along the spoorwegs, and yes, around some you should tread lightly. ...
13
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24answers
4k views

If fairies don't need as much food, water or space, why wouldn't they overwhelm humans in the post-apocalypse? [closed]

I'm writing a story about the aftermath and consequences of a runic magic system being mysteriously introduced to the human race by an unknown entity. Every week a new rune is given to everyone on ...
13
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16answers
6k views

How to knock down humanity?

I'm looking for the perfect kind of apocalypse that not only can kill great parts of the people on Earth leaving the survivors spread in little primitive groups across the world ,but can also avoid ...
13
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7answers
2k views

What would be the development of the most valuable, irreplaceable food trade goods in a post-apocalyptic world?

So imagine any typical post-apocalyptic world, recently cast into their misfortune. A very large percentage of humanity has been killed, leaving a very large stock of property to be looted. I suspect ...
13
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2answers
2k views

A post-apocalyptic industrial revolution

It's been a couple of thousand years since humanity bombed itself back to the stone age. Most places are now safe to travel through but there's barely any sign of the old cities, new ones have sprung ...
13
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6answers
2k views

I wiped out most of the human race - now I want to create a more peaceful and equal society

A while back I decided to create a zombie virus to wipe out most of the human race. That was fun and all, but now I'm faced with another problem - setting up a society. I originally wiped out nearly ...
13
votes
7answers
17k views

How would lack of sunlight affect a human population?

Other than photosynthesis being an issue, if the Earth's surface became inhospitable and humans were forced to live underground, what biological changes would they be expected to go through to adapt ...
13
votes
3answers
995 views

People of the Sea- Living on a Migratory Fleet

Okay, following my previous core question, after the apocalypse, one of my sets of survivors in this setting, the Usnay, managed to live in a fleet of ships for over a thousand years. This is ...
12
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14answers
9k views

Why would post-apocalyptic men be twice as large as women?

I'm creating a post-apocalyptic world several centuries into the future. After the nuclear war whatever is left of humanity has regressed into the dark age. Society: The offspring of those few who ...
12
votes
4answers
2k views

Can osmium replace calcium or be placed in with it to make an organic human exoskeleton

I am trying to design my main character in my post-apocalyptic series to have a very dense, organic, durable skeleton. The skeleton should also be able to handle gun fire, a sledge hammer impact, as ...
12
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10answers
2k views

Can postapocalypse world ditch one currency?

This is mostly an economy-based question, so I am using Fallout world as an example. But bear in mind I care about economy factor of switching from one currency to another. The world is after a great ...
12
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6answers
685 views

What conditions allow advanced technology to be crafted, but not mass-produced?

We once lived in a galaxy filled with the wonders of technology indistinguishable from magic. Even the poorest beggar could afford this mass-produced tech. Vidscreens as real as life, longevity ...
12
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8answers
1k views

How can a world with constantly-moving nomads form?

I've been working on a world for a game I'm making. The basis of the game is that you have to carefully manage your resources, and to keep moving. I'd like to build a world which fits that. These are ...
11
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13answers
4k views

How are post apocalyptic police/paramilitary force funded?

Background World has had a disaster that has caused a global breakdown of society, along the lines of Fallout or The Walking Dead (90% of people have died or been turned into flesh-hungry zombies.) ...
11
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15answers
6k views

Is it viable to wall modern cities against “zombies”?

Let's say the city covers about 40 square miles (104 square kilometers), that machinery and some oil refineries are still usable (for construction vehicles), and that there is a lot to salvage in way ...
11
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15answers
5k views

What would be the value of gold and jewelry in a post-apocalyptic society?

World War VI happened in year 2xxx and the government went AWOL. No federal, state, county government. Chaos and anarchy ensued, and Charles Hestion IX [1] felt his ancestor's efforts paid off. Ammo ...
11
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6answers
1k views

How long can knowledge stagnate before it may be deemed 'fantasy'/lost' in folklore?

News media showcase any number of potentially depressing events around the globe - internecine conflicts, ethnic conflicts, catastrophes and what-not. The corollary constitute fiction as depicted by ...
11
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11answers
677 views

Speculative weapon of mass destruction

In near future a global war wipes out most of humanity, leaving only a handful of survivors. Thousands of years later these survivors have adapted to lives in small pockets of the world still left ...