Questions tagged [post-apocalypse]

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

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50
votes
11answers
15k views

For how long after an apocalypse would modern cars remain usable?

Imagine a "soft" kind of apocalypse - nothing like Earth being hit by an asteroid. In particular - 90% of human population have just disappeared (no matter why). So there are abandoned cities and ...
39
votes
10answers
55k views

How many people are required for a healthy re-population of the Earth (Post-Apocalypse)?

In my particular Earth, much has remained after the human-killing virus, and nature is thriving - even taking over the cities. It's beautiful. But I have separated the healthy populace in orbit ...
14
votes
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 ...
0
votes
5answers
1k views

Could humanity be blown back into the Stone Age

If there was a large scale nuclear war, would it be possible for humanity to literally be blown back into the Stone Age. Like if all pre war knowlege and technology was destroyed could people revert ...
61
votes
17answers
25k views

What would a Boeing 747 look like if it were left in a hangar for 5,000 years. Could it still be flown?

Assume a passenger aircraft were left undercover for a very long period, perhaps thousands of years, in a damp, arboreal environment. How much of it would survive? Which parts would remain intact, and ...
25
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8answers
9k views

How would societies be if created and populated only by young people?

I’m writing a post-apocalyptic RPG, but I have a problem when dealing with the reconstruction of the society. The apocalypse left alive only the young people up to 21 years of age. Even though the ...
15
votes
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 ...
40
votes
22answers
4k views

Is it realistic to believe an apocalyptical setting can last 500+ years?

Our world of fiction is filled with books, movies, and games suggesting a Mad-Max-style apocalypse can last hundreds of years. This, despite the fact that nuclear fallout would decay within a decade ...
9
votes
6answers
19k views

What if the earth was physically split in half?

This question asks what if the world was divided into two regions? I'm asking what if the world was split into two planets. Let's say some aliens come to Earth and prank us (apparently they never ...
8
votes
10answers
1k views

How much technological regression is plausible?

I'm working on a post-apocalyptic world for a game and the more I think about it the more unsure I get about the technological development of the setting being believable. So I'm asking how likely a ...
17
votes
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 ...
39
votes
32answers
31k views

Most effective long-term zombie killing weapon

So I asked this question a few days ago, with excellent and certainly useful feedback. I've decided I'd like to build upon that question with some ways to combat our 'new and improved super zombies'. ...
35
votes
10answers
7k views

Preventing post-apocalyptic society from becoming misogynistic

The apocalypse has happened, but humanity survives. People still remember the technology they had, but too many of the people who really understood how it worked and how to make it have died, leading ...
9
votes
4answers
4k views

For how long would electricity and internet be avaliable if all but one human on Earth were gone?

In my story all humans except one vanished suddenly. This one received the gift of immortality and is now alone in this world. Considering that the world is identical to ours. How much time does this ...
15
votes
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 ...
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
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 ...
10
votes
6answers
4k views

Could you pick up a loaded gun five centuries from now and fire it?

What about a thousand years? This question was asked before about planes (I think), but since a gun is considerably less complex than a vehicle, I was wondering if they'd stand the test of time. Or ...
0
votes
2answers
220 views

A friend has an idea for a PA colony traveling to Proxima Centauri B but need help fleshing it out

So, my friend had an idea for a weird Post Apocalypse society traveling through space towards Proxima Centauri B, and she's trying to figure out where the population would be 50 and 100 years after ...
172
votes
14answers
22k views

Humans are Gone: Do the Chickens Make It?

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 ...
73
votes
32answers
19k views

How could an apocalypse kill off all adults — leaving only those under the age of 18?

I've been trying to write a book for years about a post-apocalyptic society entirely run by children, in which all of the adults died off and the children have to figure out how to survive and, ...
52
votes
6answers
10k views

Farming after the apocalypse: chickens or giant cockroaches?

So let's say you live in a terrifying post-apocalyptic world. For whatever reason, this world is now infested with cockroaches the size of chickens (similar to radroaches from the Fallout games, but ...
17
votes
6answers
2k views

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 ...
14
votes
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 ...
11
votes
7answers
2k views

Plausible Components for Zombie Immunization?

Thank you everyone. This was certainly not a question with a simple solution, and was far more complicated than I could've imagined. All of you provided so many amazing, insightful responses, ...
8
votes
4answers
2k views

Most valuable information/technology for rebuilding after the apocalypse?

I’m a wealthy billionaire dying of terminal illness. The world I’m currently living in is clearly on the brink of a world ending nuclear war. I predict that the world ends next month. I am putting ...
17
votes
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, ...
9
votes
2answers
766 views

How would the relics of extinct human society affect future civilizations?

My story (same world as here) take place in a future Earth between 3 and 5 million years in the future. What kind of artifacts, if any, would civilizations from this era find from the now extinct ...
7
votes
5answers
3k views

How to name a post apocalyptic town? [duplicate]

I cannot think of good names for towns in my country in the post apocalypse. Most of the time I just call the towns “New Houston” or “New Seattle”, but I need more creative names. What are methods ...
3
votes
4answers
1k views

Manufacturing of fuel, post-apocalypse

I'm currently writing a post- zombie-apocalypse story, where Average Joe and his group have outlived the zombies, and wants to be a large settlement. They quickly agree to be industrial and ...
17
votes
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 ...
1
vote
9answers
875 views

Which common military equipment could last 500+ years after an apocalypse?

So I’m writing a story set 500 years after a nuclear holocaust. In the scarred, charred wastelands of the former United States of America, a beacon of light, a humanitarian, righteous organization ...
5
votes
4answers
6k views

How long would guns stored in oil be operable?

Similar to this question but with some specifics. In the TV show The 100, the kids find a cache of assault rifles in the equivalent of a munitions dump. 97 years have passed since the latest ...
1
vote
1answer
582 views

How long would current weapons last?

In a post-apocalyptic world where humans stopped producing the weapons and ammunition as we know today, how long would one be able to rely on one of these weapons (guns, rifles, etc.) they posses? How ...
1
vote
4answers
2k views

Which livestock could survive without humans?

If all the humans were to suddenly vanish tomorrow (apocalyptic scenario of your choice) which of the UK's common farm animals (cow, sheep, pig, horse, goat) would be able to survive extinction as a ...
132
votes
11answers
24k views

Everything alive in the world dies this instant. Without bacteria to decompose anything, what happens to the remains? What does this look like?

So when I say everything, I mean everything. Humans, animals, plants, fungi, bacteria, all dead. If the bacteria and other detritovores and decomposers can't decompose anything since they themselves ...
47
votes
21answers
6k views

Most valuable resources from houses?

In a post-apocalyptic scenario a group of circa 100 people is looting houses to gather resources for their survival. They are the only ones in the region, and resulting from this have no issues with ...
28
votes
11answers
5k views

A Treasure Chest for your Post-apocalyptic Children

Prior to the point in my story when the nature of the looming apocalypse becomes known, my main character acquires a large (6-foot) air-tight freezer chest, puts it (unplugged) in his basement, fills ...
66
votes
22answers
26k views

Humans are gone - what can I harvest from their cities 30M years later?

A new species with technological potential is starting to multiply and subjugate the Earth. What resources can it harvest from human (our) cities which were destroyed 30M years ago (humans are gone ...
44
votes
8answers
14k views

How dangerous is a 500-year-old nuclear warhead?

Inspired by this question: For several excellent reasons, a 500-year-old nuclear warhead is not going to produce an actual nuclear explosion. But that doesn't mean it's not dangerous anymore. ...
39
votes
29answers
10k views

Why would a crash landed generation fall back to the stone age?

Background In the mid 22nd century, a super plague has killed 99% of human life, many survivors are killed in the ensuing riots and fighting. The few billionaires that are hiding in their bunkers ...
41
votes
31answers
16k views

A way of getting the water to the top of the tall building without electricity?

First, let me explain the situation. Post-apocalypse setting, a group of humans (let's say around a hundred of them) have to find safe places to live at, protected from animals, bandits, and other ...
25
votes
11answers
3k views

Restoring the world after a global apocalypse

So the world has been destroyed. Pick your poison. We have probably 300 different scenarios lying around here somewhere. What's Left: The world is a desolate wasteland, dry and crispy and barren ...
13
votes
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 ...
24
votes
13answers
5k views

What kinds of remnants might be evidence of a previous civilisation?

The trope of an ancient advanced civilisation that disappeared is as old as the hills, but it does raise an interesting question: what kinds of evidence would suggest that somebody else was here first?...
22
votes
10answers
5k views

Moving stealthy in an hostile enviroment

I'm in the middle of sketching out a new story, settled a post-apocalyptic version of our present. The main feature of this enviroment would be blind, mindless, aggressive and contagious versions of ...
17
votes
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 ...
26
votes
29answers
9k views

Ideas for practical post-apocalyptic currency 100 years from now

First, let me introduce the setting. It's happening in post-apocalyptic SE Europe (Balkans specifically), about 100 years from now. Strange genetic disease wiped out large portion of humanity in a ...
19
votes
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, ...
5
votes
4answers
780 views

Where would water come from in an underground colony?

A large solar flare event ignites the atmosphere of Earth, but luckily, humans have been preparing for an event like this for some time. We have a fairly large shelter around 2.2 kilometers ...