Questions tagged [apocalypse]

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

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-1
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2answers
578 views

How many people can the government realistically save?

Backstory and Setting I'm forging an alternate history set in the year 2012, a horrible zombie virus is sweeping across America, it spreads extremely quick and is incurable. The infected are ...
2
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1answer
282 views

How to start a Venus syndrome?

A terrorist group threatens to start a runaway greenhouse effect by releasing tetrafluoromethane into the atmosphere. How much gas do they need to do that on earth?
3
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5answers
858 views

What form of transmission for zombies would be most effective?

I need a form of transmission for a zombie-like disease that would allow it to actually infect the world. Most people who work with the realism of the zombie infection agree that biting alone would ...
6
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10answers
920 views

What is the least impactful thing that could be done to wipe mankind , but allow the survival of other animal life?

A group of biosphere conservation activists from a type three civilization come across the earth. Using their technology and observations, they see that throughout human history , humans have ...
16
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11answers
10k views

What production of power would be most efficient in a zombie apocalypse?

In a zombie apocalypse scenario, power is important. It charges your lights, powers your communication, along with the possibility of defensive use as in tasers and electric fences. Electricity can ...
4
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1answer
301 views

How dark would an impact winter really be?

How dark would it be living in an impact winter? Where would an asteroid have to hit earth to cause an impact winter? gives a great breakdown of the effects of an impact winter, but I'd like to know ...
2
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1answer
105 views

Changes in society under constant threat [closed]

Let's imagine a situation: one day without any preconditions Earth was attacked by unknown beings. They do not have firearms, but they have a sharp and durable blades. They walk pretty slow and have ...
3
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11answers
303 views

A nuclear weapon to destroy the earth - in public domain!

Aliens (or atleast we presume it's aliens) have radio broadcasted from a distant part of the universe. They have provided a method to create a nuclear weapon powerful enough to blow up the entire ...
2
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2answers
141 views

Help me throw rocks at a planet

I have a planet in a solar system that is for all intents and purposes identical to ours that I want to play like a bongo drum with asteroids or other extra terrestrial rocks to destroy most of the ...
12
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5answers
2k views

How to end the world by earthquake?

For the sake of convenience, this happens on Earth. However, in this scenario only the American continent (all of it) is inhabited. One of the countries is experimenting with extremely advanced and ...
3
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6answers
3k views

Could I intentionally trigger a Yellowstone eruption?

I'm very interested in a post-eruption setting in the continental United States. Unfortunately, it looks quite unlikely that a serious caldera-forming eruption is in our near future. However, we're a ...
3
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5answers
1k views

Why would intelligent zombies not use weapons

In one of the Worlds I am building, there are zombies. Sadly the zombie genre is dead(sorry), this is mainly due to the overwhelming domination in the genre and lack of new creative zombie types (...
3
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2answers
493 views

What are people doing while they wait for the apocalypse?

In my universe, the world is ending, and it's clear to everyone that nothing that can be done to save it. Most people have escaped by taking a one-way portal to another world, but there are some ...
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4answers
227 views

How realistic is it to obliterate planet killer with light only?

For this purpose you may make the following assumption: No magic, miracle and hope. The asteroid should be on a collision course for us Threat level is omega. Collateral damage must be keep to ...
0
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3answers
162 views

How will humanity cope when Earth's atmosphere is being robbed?

I'm planning to write a story whereby scientist had predicted Earth will be hit by a colossal coronal mass ejection (estimated at least a thousand times stronger than the perfect solar storm a.k.a ...
-3
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1answer
238 views

The Stars are Falling! Or are they? [closed]

In my apocalyptic story the stars fall, these destroy buildings and cause massive fires. From these white bodies of light come a plague that make people go crazy (among other, more disturbing effects ...
1
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1answer
102 views

Survivors of a far flung Earth

When the earth is flung out of the solar system as per Josh Pirhi's question, not everyone embarks on a spaceship. Instead, as earth becomes a rogue planet, a group of survivors created a self ...
3
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2answers
2k views

how would you survive an asteroid impact?

The world government discovers that a mile wide asteroid will strike the earth in a couple months. Assuming that the impact is imminent and nothing can be done to stop it, what could the governments ...
3
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2answers
207 views

What size of near-earth asteroid could break up in the atmosphere to do sufficient damage to a city without destroying it?

I need a meteor to deliver an extraterrestrial algae-like cellular life form to an urban environment/city. The meteor needs to be far enough that it will not impact the Earth and will not cause ...
50
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10answers
50k views

Will unattended nuclear power plants actually cause damage to their surroundings?

Scenario: Deadly virus wiped out 80 - 90% world population and it did it pretty quickly (in 2 months) Although it is plausible that among these 10 - 20% of survivors will be people who actually know ...
5
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5answers
1k views

Can you just wait out the heat death of the universe?

Okay, so the heat death of the universe is approaching. You can't stop it. You can't dodge it. What do you do? You wait it out. According to wikipedia, about $10^{{10}^{56}}$ years after the heat ...
2
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1answer
183 views

Where Else Would the Cretaceous Comet Hit? [closed]

Over 65 million years ago, a comet the size of Mount Everest slammed into Mexico's Yucatán Peninsula, reducing the mighty Dinosaur Empire, which had endured for 150 million years, into ruin. ...
1
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2answers
191 views

How to explain perpetual earthquake magnitude at least 5 on Richter scale?

I need an event man-made or not on Earth that can generate consistent earthquake that never grow weak, sky is the limit meaning any astronomical events will be ruled out. My story can take place ...
1
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2answers
246 views

The day the modern human era ended [closed]

(First of all, sorry for bad english) We know that “the formal end of the Roman Empire on the West in AD 476 thus corresponds with the time in which the Empire and the title Emperor no longer had ...
40
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9answers
7k views

What happens to an empty, modern city?

Suppose you have a modern city in a temperate climate zone that empties. No people, or hardly anyone left, certainly not enough to keep all the infrastructure going. Our city is not Rotterdam (below ...
6
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3answers
269 views

What problems would one have to face if one is the only person left alive? [closed]

Suppose that due to unobtanium instability one wakes up tomorrow to realise that one is the only person left alive. Every other life form except for humans is left intact. Let's assume that all ...
96
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26answers
30k views

How to survive the heat death of the universe?

The eventual heat death of the universe is an awful time to be alive considering you wouldn't have long left after the last star finally fades away. In this scenario there is a small group of about a ...
8
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2answers
955 views

What would life be like on the remnants of a shattered planet?

The year is 2089. The political shenanigans of the day have gotten more out of hand than usual and violent zealots have detonated the Earth's largest deposit of plotium devicide, an extremely ...
4
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5answers
429 views

How would the Great Atmospheric Catastrophe come about?

How can the atmosphere rapidly change composition? Around ~2.3 Billion Years ago, the Atmosphere changed radically: Cyanobacteria started pumping out Oxygen and the atmosphere gradually became Oxygen ...
8
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12answers
1k views

I unleashed a zombie apocalypse - but I'm not rooting for the humans

I am part of a small group of scientists who have recently created a virus to turn people into zombies. The virus is highly contagious and is transmitted through bodily fluids, like blood or saliva. ...
23
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10answers
10k views

What would happen if magnets stopped working?

I asked a similar question earlier: What would happen if electricity stopped working?. But I was also thinking about what would happen if magnets stopped working. This question is very related to what ...
4
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1answer
242 views

How much Sulfur Dioxide is needed to freeze life on earth?

This is inspired by What single element could destroy the world?. Injecting sulfur dioxide into the atmosphere has been proposed as a mechanism to relieve the symptoms of global warming by creating a ...
8
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4answers
798 views

The neverending winter

In a story I am working on the entire earth has fallen into winter that; exists in the same level and temperature all over earth and never ends. The top scientists around the world have been trying to ...
4
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4answers
3k views

Most effective strategy for surviving the zombie apocalypse? [closed]

It's happened! The undead have risen and as more of us die, more of them appear. That crazy neighbour with the doomsday shelter doesn't seem so crazy now does he? Bet you wish you went to his meetings....
147
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23answers
16k views

How to take down the internet?

The internet is a mesh or "net" of computers, all constantly establishing and re-establishing connections with each other. For this reason, only temporarily do servers go down, before they are back up ...
357
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25answers
39k views

How would Facebook Sysadmins prevent the summoning of Cthulhu?

So, I've got this idea for a short story. Some researchers find a forgotten manuscript hidden locked away in an ancient tomb. While they are working on it one of them pastes part of the text into a ...
9
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6answers
467 views

Steps to prepare for the Apocalypse

Joe Doomsdayer is an otherwise average 30 year old guy, with one exception: When he turned 30 he got a vision that the world as we know it is going to end when he turns 55. And, to make things more ...
31
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6answers
5k views

How would we try to defuse Yellowstone?

There exists a fictional future world where we have determined space travel is impractical for the majority of the species, despite the fact that technology is more advanced than today. There are no ...
3
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7answers
707 views

How to destroy/decimate life on earth with chemicals?

If a country could produce compounds magically within a foot of them, given that the necessary atoms/elements are already there (could convert water to hydrogen peroxide, coal to diamond, Salt and ...
1
vote
3answers
356 views

Population size below which tech companies (such as Google, Oracle, Comcast, etc) could no longer operate

Let's say that there is some worldwide catastrophe (some zombie-like infection or something else) that affects working age people in such a way that technology companies do not have enough people to ...
65
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18answers
13k views

Architecture of the perfect zombie apocalypse refuge

Your mission, whether or not you choose to accept it, is to design the perfect refuge from the zombie apocalypse. Starting assumptions and constraints: The zombies will be slow (walking) zombies (...
4
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3answers
1k views

Can We Build Noah's ark?

In the Christian Bible story, Noah built an ark that could hold two of every land animal. Now let's assume that Noah lived in 3000 BC and that he had the men and materials to build this boat. How ...
4
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3answers
314 views

Human Blood as tradable nutrition in post-apocalyptic setting?

I hope that this question qualifies for worldbuilding. Take my apologies if it's too specific / not specific enough. In a post-apocalyptic desert-like environment with only a few million people left ...
34
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8answers
9k views

Nuclear apocalypse in a nuclear submarine

You're a sailor on (in?) a brand-spanking-new Virginia-class nuclear submarine. You just set sail a couple of weeks ago, and were doing some routine exercises in the North Atlantic (about 500 miles ...
3
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0answers
439 views

What's the effect of a standard bullet hitting Earth at 0.99 c? [closed]

Let's say that some aliens got mad at us and decided to destroy Earth. A young child on one of the alien starships was playing with his toy gun which could shoot normal bullets at relativistic speeds.....
6
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6answers
617 views

How do I create a societal collapse with ruins, while the tech can make Ridiculously Human Military Androids?

How do I create a societal collapse with ruins, survivors, and the weaponry is back to pre-gunpowder technology (swords, shields, bows, etc.), while the Pre-Collapse tech can make Ridiculously Human ...
24
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6answers
1k views

Replicating the biblical flood

The Biblical story of the Flood describes how over a period of 40 days the earth is flooded so that the peak of the highest mountain is 15 cubits/22.5ft/6.858m below the new mean sea level. The flood ...
27
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9answers
4k views

Can you buy your way out of the Apocalypse?

It is often suggested that if a an imminent crisis was about to occur such as a huge comet strike or Yellowstone erupting, that all the rich people could buy their way into special bunkers to protect ...
3
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5answers
1k views

What's the worst that could happen to CERN? [closed]

It's been said many times that CERN is going to destroy the Universe and everybody in it, but most educated people know that this is absolute hocum. It seems being the biggest supercollider therefore ...
1
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2answers
208 views

The Frog and the Jelly

Back home, the phylum Cnidaria (jellyfish, coral, anemone) and the class Amphibia are two of the most ancient groups of animals on the planet. But let's say that, on an alternate Earth, many millions ...