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Q&A

Posts tagged apocalypse

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Q&A What would it be like living underneath a solar thermal tower in the middle of of post-apocalyptic city?

The premise for the the world I'm building is that the Superpowers of Earth lost an interplanetary war with the Colonies of Mars. As a result, most of Earth's governments have either collapsed or h...

2 answers  ·  posted 7y ago by D-Nate‭  ·  last activity 7y ago by D-Nate‭

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Q&A Is it possible for a world-wide plague to start off as seemingly different diseases?

In the case of a world-wide plague epidemic that'll trigger the near extinction of humanity, is it possible that a virus/disease has inconsistent symptoms so that people aren't aware that it's real...

8 answers  ·  posted 9y ago by KaguraRap‭  ·  last activity 7y ago by KaguraRap‭

Question biology apocalypse
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Q&A Can a disease be airborne but not be contagious by other means?

Building on Josh King's answer to this question concerning the feasibility of a disease which dies with its host, can a disease be contagious by airborne means while not being contagious by fluid e...

2 answers  ·  posted 7y ago by Henry Taylor‭  ·  last activity 7y ago by Henry Taylor‭

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Q&A Is a plague that is only contagious from a living host feasible?

How believable is a touch or fluid vectored bacteria which is so dependent on its host that the remains of a terminated victim become non-contageous within minutes of the host's death? I'm postula...

3 answers  ·  posted 7y ago by Henry Taylor‭  ·  last activity 7y ago by Henry Taylor‭

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Q&A The stars are going out! (a question about vacuum metastability)

So I had an idea earlier today and was wondering. Most sources you consult about the supposed "vacuum metastability event" say that the bubble would begin expanding at NEARLY the speed of light, no...

2 answers  ·  posted 7y ago by Z.Schroeder‭  ·  last activity 7y ago by Z.Schroeder‭

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Q&A Advanced civilisation and a rogue planet approaching

First, a little background information. For the purpose of my story, I'm making the Earth uninhabitable, similar to this question. This is to cause a mass exodus from the solar system through a bit...

3 answers  ·  posted 7y ago by Cairyn‭  ·  last activity 7y ago by Cairyn‭

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Q&A What could cause Venus to go from an Earth like state to its current state?

Adhering to natural laws and physics as much as possible[1], what could cause Venus to go from a habitable planet to its current state, and how long would it take from the apocalyptic event to achi...

3 answers  ·  posted 7y ago by amflare‭  ·  last activity 7y ago by amflare‭

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Q&A Could a large scale Tunguska air burst cause a mass extinction?

Some Background Details In 1908, the Siberian region of Tunguska made headline news when an explosion knocked down 80 million trees in an area of only 770 square miles. The mystery was that there ...

4 answers  ·  posted 8y ago by Uncle Tres‭  ·  last activity 8y ago by Uncle Tres‭

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Q&A Space cataclysm that can slowly cook the Earth around

Imagine a space cataclysm, where the Earth is hit by a deadly wave sterilizing all life of the bright side, but the dark side is more or less intact (at least the atmosphere and life are still in p...

2 answers  ·  posted 9y ago by Josh K.‭  ·  last activity 8y ago by Josh K.‭

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Rigorous Science 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 ...

5 answers  ·  posted 8y ago by PyRulez‭  ·  last activity 8y ago by PyRulez‭

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Q&A Could a disaster kill all (human) life on Earth but leave astronauts in low orbit alive long enough to return?

There are plenty of threats out there that could terminate all life on our little planet in varying amounts of time (Solar flares, meteors and supernovas to name a few). Are there any disasters th...

12 answers  ·  posted 9y ago by overactor‭  ·  last activity 8y ago by overactor‭

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Q&A 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 Oxy...

5 answers  ·  posted 8y ago by Amziraro‭  ·  last activity 8y ago by Amziraro‭

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Rigorous Science 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 k...

1 answer  ·  posted 8y ago by socrates‭  ·  last activity 8y ago by socrates‭

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Q&A 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...

2 answers  ·  posted 8y ago by Universalerror‭  ·  last activity 8y ago by Universalerror‭

Question space apocalypse
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Q&A 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 an...

5 answers  ·  posted 8y ago by AmiralPatate‭  ·  last activity 8y ago by AmiralPatate‭

Question apocalypse geology
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Q&A A Recent Mass Extinction--How Long Must Life Reel Itself Back In?

In our understanding of mass extinction and adaptive radiation, we have found that life can't and doesn't bounce back right away. They take time. It took life eight to ten million years to recove...

1 answer  ·  posted 8y ago by JohnWDailey‭  ·  last activity 8y ago by JohnWDailey‭

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Q&A 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 (w...

5 answers  ·  posted 8y ago by Uncle Tres‭  ·  last activity 8y ago by Uncle Tres‭

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Q&A 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 h...

2 answers  ·  posted 8y ago by JRover‭  ·  last activity 8y ago by JRover‭

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Q&A Manhattan Project goes really, really wrong

This is for a project where the electromagnetic pulse (EMP) from early US atomic bomb tests is somehow much more magnified than the destructive blast- so much so that it destroys electrical devices...

2 answers  ·  posted 8y ago by king of panes‭  ·  last activity 8y ago by king of panes‭

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Q&A When the Grass Gets Even Greener

If we remove all the ferns and horsetails from the ecological equation would grass be the only candidate to fill the void? If not, then what else?

2 answers  ·  posted 9y ago by JohnWDailey‭  ·  last activity 8y ago by JohnWDailey‭

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Q&A 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 ...

2 answers  ·  posted 8y ago by socrates‭  ·  last activity 8y ago by socrates‭

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Q&A Is there a man-made or natural event that can cause an abrupt climate change within hours/a day?

Meaning, cause a seemingly normal winter to suddenly take a turn within hours or a day/two into a completely frozen territory? From what I've read, abrupt climate change happens from ocean currents...

6 answers  ·  posted 9y ago by KaguraRap‭  ·  last activity 8y ago by KaguraRap‭

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Q&A What natural or human-induced disaster could bring to a scenario like in McCarthy's "The Road'?

This post-apocalyptic environment, as narrated in the book, depicts a world where most if not all animal life has been abruptly killed, and similarly most vegetation burned out. After the disaster,...

4 answers  ·  posted 9y ago by guido‭  ·  last activity 8y ago by guido‭

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Q&A Could humanity survive the sun going dark?

The sun inexplicably ceases to give light. It's still there and continues to have a gravitational pull keeping us in orbit. The solar system continues to operate as normal, but the sun has gone dar...

8 answers  ·  posted 9y ago by Winston Ewert‭  ·  last activity 8y ago by Winston Ewert‭

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Q&A 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 du...

2 answers  ·  posted 8y ago by user6760‭  ·  last activity 8y ago by user6760‭

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Q&A How to prevent population growth by some means

The worlds biggest problem is population growth. All that goes in bad way crime, corruption, assassination, robbery, murders everything is at increasing rate in world. And basic reason for all this...

5 answers  ·  posted 9y ago by user2408578‭  ·  last activity 8y ago by user2408578‭

Question biology apocalypse
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Q&A 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 Huma...

6 answers  ·  posted 8y ago by Malady‭  ·  last activity 8y ago by Malady‭

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Rigorous Science What single element could destroy the world?

What single chemical element (get out your periodic tables) could most efficiently destroy all life on the planet. Restrictions: Natural elements only, and no anti-matter...nice try. Looking for...

17 answers  ·  posted 9y ago by James‭  ·  last activity 8y ago by James‭

Question apocalypse
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Rigorous Science 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 creatin...

1 answer  ·  posted 8y ago by browly‭  ·  last activity 8y ago by browly‭

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Q&A Space Mechs or Tanks or Planes or Marines - Fighting in space without blowing up each other's starships

Suppose that there are 2 interstellar empires at war with one another, both armed with FTL drives which cannot be used within a certain radius of huge gravity fields, stars, gas giants, etc. Anothe...

13 answers  ·  posted 9y ago by grimmsdottir‭  ·  last activity 8y ago by grimmsdottir‭

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Q&A What happens if everything stops?

Suppose, through some fantastical mechanism, all macroscopic (i.e. reasonably massive) objects in the universe were instantly made at rest. In other words, the relative velocity between every two ...

5 answers  ·  posted 9y ago by Dan Bryant‭  ·  last activity 8y ago by Dan Bryant‭

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Q&A Escaping a dying planet

Imagine that one day in the not-too-distant future, our scientists discover that our world is dying. It doesn't matter how this is happening, maybe magic or unstable core or Gaia herself has finall...

9 answers  ·  posted 9y ago by Feaurie Vladskovitz‭  ·  last activity 8y ago by Feaurie Vladskovitz‭

Question apocalypse
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Q&A Corrosive oceans and seas - how would this affect our world?

Okay, I will make a little premise/context to give the question a decent background. I know that the scenario could look rather "handwavy", but take it as the framework on which the answer should b...

3 answers  ·  posted 8y ago by Andrea Jens‭  ·  last activity 8y ago by Andrea Jens‭

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Rigorous Science 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 fl...

6 answers  ·  posted 8y ago by Monty Wild‭  ·  last activity 8y ago by Monty Wild‭

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Q&A Size of the volcano that ends the world

One of the theories behind the extinction of the dinosaurs is the eruption of one or a series of volcanoes. Supposedly the ash expelled by these eruptions blocked out the sun, killing plants and th...

4 answers  ·  posted 9y ago by DaaaahWhoosh‭  ·  last activity 8y ago by DaaaahWhoosh‭

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Q&A Volcano the size of Australia

What would happen a volcano the size of Australia were to erupt? How high on the extinction-list would it rank? Would it be above the asteroid that hit Earth and killed the dinosaurs? Which known...

1 answer  ·  posted 9y ago by Gerwin‭  ·  last activity 8y ago by Gerwin‭

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Q&A 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 milli...

2 answers  ·  posted 8y ago by JohnWDailey‭  ·  last activity 8y ago by JohnWDailey‭

Question biology apocalypse
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Q&A Nuclear bomb propulsion to launch city sized craft into space?

NASA's Project Orion created the concept of a spacecraft that detonated nuclear bombs behind it, and rid the shockwaves as a form of propulsion, but the project was abandoned because nuclear bombs ...

3 answers  ·  posted 8y ago by Phoenix‭  ·  last activity 8y ago by Phoenix‭

Question apocalypse
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Q&A How would humans eradicate an organism that can actively spread through Earth's atmosphere?

So let's say that an alien civilization that we have made enemies with decides to use an advanced non-lethal biological weapon on the Earth as a warning. The aliens, while not infamous for any tec...

3 answers  ·  posted 8y ago by System‭  ·  last activity 8y ago by System‭

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Q&A Forced re-entry of all man-made satellites in short moment notice

Is it possible to manipulate all artificial satellites(including ISS) and space junks currently in orbit to fall into Earth's atmosphere in one go? (Tech level is late 22nd century science) Note: ...

4 answers  ·  posted 8y ago by user6760‭  ·  last activity 8y ago by user6760‭

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Q&A Could a computer take over an entire planet?

The inspiration for my question comes from The Great C by Philip K Dick. To summarize, the Great C is a computer that has taken over a large portion of the planet. It uses proxy agents to keep co...

6 answers  ·  posted 9y ago by bazola‭  ·  last activity 9y ago by bazola‭

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Q&A How long until a small black hole makes the sun fail?

Imagine aliens dropped a small black hole (say, 1% of the moon's mass, so you wouldn't notice the difference in gravitation) into the sun (from the far side of the sun, so nobody on earth can see i...

3 answers  ·  posted 9y ago by celtschk‭  ·  last activity 9y ago by celtschk‭

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Q&A Cordoning Corrosive Ocean

Imagine the entire ocean becomes extremely corrosive due to ocean acidification over a couple of decades, all nations have agreed to erect a permanent barrier along all shorelines to seperate land ...

3 answers  ·  posted 9y ago by user6760‭  ·  last activity 9y ago by user6760‭

Question water apocalypse sea
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Rigorous Science Changing Earth's rotation rate

Variations of this question have been asked and answered previously but I am looking for something specific. Situation: Earth's body (mantel and crust) rotate at different rates than it's core (I ...

1 answer  ·  posted 9y ago by Jim2B‭  ·  last activity 9y ago by Jim2B‭

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Q&A Signs of a realistic Ragnarök

So, I've been considering the Norse legend of Ragnarök, I'm considering how the legend could come true in a purely scientific setting. In other words what science-based explanation would best fit ...

5 answers  ·  posted 9y ago by Tim B‭  ·  last activity 9y ago by Tim B‭

Question apocalypse ragnarok
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Q&A Which types of firearms would be damaged or broken by a global change in combustion intensity?

I'm wondering what types of firearms would be impacted if explosives and combustion in general were to have a random chance of being more potent or less potent. Could new firearms and/or ammunition...

4 answers  ·  posted 9y ago by Jonathan‭  ·  last activity 9y ago by Jonathan‭

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Q&A Aliens steal our trees

Aliens steal all our trees. Nothing else happened, just all the trees are gone. Everything not part of the tree was left where it was (apples are stolen, termites are not.) What would be the short...

2 answers  ·  posted 9y ago by PyRulez‭  ·  last activity 9y ago by PyRulez‭

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Q&A Aliens put us on the moon

So some aliens come, put everyone in space suits, and drop us one the moon. The aliens are super smart, and the space suits have enough air for a year, and can't be damaged easily, and only upon fr...

1 answer  ·  posted 9y ago by PyRulez‭  ·  last activity 9y ago by PyRulez‭

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Q&A Where could Humanity live on Earth had LA Apocalypse not been resolved?

In the terrible movie LA Apocalypse the planet's core destabilized causing the fault lines to erupt, magma spilled out, earthquakes going every 5 minutes. Eventfully things were resolved by detonat...

1 answer  ·  posted 9y ago by Memor-X‭  ·  last activity 9y ago by Memor-X‭

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Q&A What are the requirements for the zombie in order to reach a full zombie apocalypse?

Similar, but a bit more broad, to Would a zombie apocalypse be possible if a zombie existed? A secret lab (owned by a private company) near Chicago creates a virus strain called 'ZB01' (to be so...

8 answers  ·  posted 9y ago by wposeyjr‭  ·  last activity 9y ago by wposeyjr‭