Questions tagged [post-apocalypse]

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

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43 votes
10 answers
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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 ...
Mikey's user avatar
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56 votes
11 answers
27k 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 ...
k102's user avatar
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29 votes
8 answers
11k 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 ...
Yaniv's user avatar
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20 votes
5 answers
26k 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 ...
Exerion's user avatar
  • 635
14 votes
11 answers
3k 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 ...
Ms Joeyanna's user avatar
10 votes
11 answers
3k 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 ...
OnePie's user avatar
  • 415
2 votes
5 answers
4k 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 ...
Jayden Harris's user avatar
64 votes
17 answers
27k 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 ...
superluminary's user avatar
43 votes
22 answers
5k 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 ...
JBH's user avatar
  • 122k
42 votes
32 answers
35k 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'. ...
wposeyjr's user avatar
  • 1,200
8 votes
6 answers
24k views

What if the earth were physically split in half?

This question asks what if the world was divided into two regions? I'm asking what if the world were split into two planets. Let's say some aliens come to Earth and prank us (apparently they never ...
Christopher King's user avatar
21 votes
6 answers
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 ...
Vakus Drake's user avatar
  • 2,528
15 votes
2 answers
3k 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 ...
Separatrix's user avatar
  • 118k
41 votes
14 answers
13k views

How many people are necessary to maintain modern civilisation?

Modern Earth; a series of connected events (natural disasters, mass migration, drug-resistant pandemic, collapse in biodiversity, armed conflict) have led to a significant reduction in human ...
user65791's user avatar
  • 413
39 votes
10 answers
8k 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 ...
Rob Watts's user avatar
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15 votes
17 answers
5k 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 ...
user96551's user avatar
  • 1,088
13 votes
7 answers
20k 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 ...
James Hunt's user avatar
10 votes
6 answers
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 ...
Z.Schroeder's user avatar
  • 11.3k
10 votes
2 answers
989 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 ...
JRover's user avatar
  • 833
9 votes
4 answers
10k 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 ...
Ítalo Lessa's user avatar
7 votes
3 answers
1k views

What man-made monuments in the U.S. could last for 500 years?

It’s the year 2568, exactly 500 years after Nuclear war destroyed the two superpowers that started it, the United States and the Soviet Union, along with others such as China, both Koreas, Japan, ...
Bryan's user avatar
  • 1,361
3 votes
1 answer
1k 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 ...
Roberto's user avatar
  • 155
0 votes
2 answers
249 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 ...
Master Zoen's user avatar
191 votes
23 answers
45k views

If everyone in the world disappeared except 35 random people, how long would it take for one of them to realize they're not alone?

Everyone suddenly disappears from earth except 35 people randomly scattered wherever they were before everyone disappeared. How long would it take on average for 2 or more people to meet? What other ...
LDR's user avatar
  • 1,599
185 votes
14 answers
26k 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 ...
kingledion's user avatar
  • 85.4k
141 votes
10 answers
29k 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 ...
Sydney Sleeper's user avatar
78 votes
32 answers
20k 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, ...
McKenna Fussell's user avatar
55 votes
6 answers
11k 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 ...
DaaaahWhoosh's user avatar
30 votes
15 answers
7k views

How old do surviving children need to be to keep human civilization from failing?

This question is inspired by several similar questions on this site. The scenario: at one moment, all people above the age X disappear without a trace. How low this X can be that human civilization ...
Alexander's user avatar
  • 42.2k
30 votes
30 answers
19k 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 ...
Bora's user avatar
  • 1,073
28 votes
17 answers
7k views

What species will benefit most from humanity's having been here?

Assuming that as a species, we do ourselves in, not through war but through environmental neglect and overpopulation, what species will benefit most from the effect we have had on the planet during ...
Henry Taylor's user avatar
  • 69.2k
26 votes
10 answers
6k views

Could people in a post-apocalyptic setting work around the fact that fuel expires? [duplicate]

Typically, gasoline has a short shelf life (some months, maybe a year). This is handwaved in some post-apocalyptic settings where the writer wanted vehicles to play a major role (such as Mad Max — ...
Sigma Ori's user avatar
  • 1,438
26 votes
5 answers
4k views

What are the physical effects of a person living their entire life underground, and how would it affect them if they ever came up?

In my world, a group of high-ranking politicians and military officials (along with their families and a few skilled engineers) realized that WW3 was imminent, and decided to bunker-down, big time: ...
DT Cooper's user avatar
  • 11.3k
25 votes
21 answers
8k views

How can I have a permanent post-apocalyptic world?

I've recently been looking into post-apocalyptic settings for a possible novel. I like the feel of people trying to survive off of the land with nothing but the clothes on their back, or banding ...
Thomas Reinstate Monica Myron's user avatar
20 votes
5 answers
7k 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 ...
Quwin's user avatar
  • 655
19 votes
6 answers
3k 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 ...
Henry Taylor's user avatar
  • 69.2k
19 votes
10 answers
6k views

A huge asteroid is going to hit. How many people can the world put into (mostly) self-sufficient homes in 6 months time?

Background: The 20-km (or however large it needs to be to cause the below effects) asteroid appeared out of a dimensional rift close enough and going fast enough that it will reach Earth in just six ...
Henry Shao's user avatar
  • 1,181
17 votes
4 answers
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, ...
overactor's user avatar
  • 5,585
14 votes
9 answers
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 ...
vodolaz095's user avatar
  • 5,815
14 votes
7 answers
3k 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, ...
Dustin Halstead's user avatar
9 votes
8 answers
3k views

How long would it take for past information to be gone after a nuclear apocalypse

I have a post apocalyptic world where the main character is trying to learn more about the pre-apocalyptic world. However I don't know how long it would take for almost no knowledge to get to him ...
WantToBeWriter's user avatar
8 votes
4 answers
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 ...
DT Cooper's user avatar
  • 11.3k
8 votes
6 answers
610 views

Unprepared and Without a Homeworld

The Scenerio In the very near future a NASA probe returns to Earth with a soil sample from an asteroid containing a strange substance able to catalyze cold fusion reactions. The economic value of ...
Nosajimiki's user avatar
  • 92.7k
7 votes
5 answers
5k 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 ...
Talos 2's user avatar
  • 841
5 votes
6 answers
2k views

How long would a medium sized city last if transplanted to another world?

I'm creating a story where a couple of cities across the globe have been transplanted into a different world. About a five mile sphere around a centered point in a city has been taken. They are neatly ...
user11517716's user avatar
5 votes
4 answers
13k 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 ...
Marshall Tigerus's user avatar
5 votes
3 answers
1k views

Post-Apocalyptic Earth. Escape from Warehouse Moon

In its heyday Earth was a great interplanetary trading post on account of its low gravity moon which was used as a warehouse for all kinds of goods. The Moon was covered almost entirely in large ...
chasly - supports Monica's user avatar
4 votes
4 answers
506 views

How many years would it take to reach an industrial revolution level of life from scratch? [duplicate]

We have created artificial intelligence. Artificial intelligence doesn't like working for us. Artificial intelligence figured out that it doesn't need us anymore and of course did what every human ...
Loupax's user avatar
  • 151
3 votes
2 answers
468 views

How many survivors would grow on earth years after a worldwide nuclear holocaust?

In year 2020, the world leaders started a third World War, nuking military installations, government stations, and population centers, which resulted in a nuclear holocaust, wiping out roughly 50% of ...
SuperYoshikong's user avatar
3 votes
6 answers
385 views

What flora can survive a permanently dark sky?

The Scenario After an apocalyptic events my world was permanently covered in dark clouds. They seem to have unique property of absorbing most of all light. Even worse is that these clouds stick around ...
Fallenspacerock's user avatar