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Scenario:
* An Earth that is identical to our own (for the sake of being specific let's say the environment is the same as it was in 1 BCE)
* The planet is uninhabited by humans (and no there aren't giant creatures like dinosaurs - basically it's exactly like our Earth was, only without humans).
* Sudden... |
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# Horny and Hungry
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> "You're like a father to me."
>
> "Yeah, I wish you were dead, too."
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> "Thanks, Dad!"
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I have a world in my stories in which the inhabitants evolved from a race that practices sexual cannibalism. That is, the female eats the male during impregnation, just like th... |
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This is one of a series of questions also discussing [floating farms](https://worldbuilding.stackexchange.com/questions/69100/how-to-build-a-floating-farm) and [city buiding](https://worldbuilding.stackexchange.com/questions/73497/can-a-city-in-a-flood-plain-be-maintained-for-centuries-if-it-is-built-on-... |
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**This question already has an answer here**:
[Can I have a planetary liquid or gas ring system?](/questions/40564/can-i-have-a-planetary-liquid-or-gas-ring-system)
(1 answer)
Closed 6 years ago.
I'd like to know the logistics of this. I mean liquid rings is not too far fetched if not very unlikel... |
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Neo-Vikings have been plotting the non-viking world's downfall for quite some time. To this end they have designed a super virus, Tryggvason, and are trying to pick between three three countries, the US, Germany, and England. They want to weigh the impact of the virus before they pick a target.
The quest... |
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I tested this in [sandbox](http://meta.worldbuilding.stackexchange.com/questions/635/sandbox-for-proposed-questions/), and as recommended, I've added the 'knowns,' including geography and timeframe.
What and how would we go about salvaging an alien craft in the immediate days after a crash?
In Portland, ... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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This question does not appear to be about **worldbuilding**, within the scope defined in the [help center](https://worldbuilding.stackexchange.com/help).
Closed 8 years ago.
[Improve this que... |
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Hard Science usually entails being as realistic to reality as we know it as possible. One problem though, is that we do know that science *advances*. Also, most of our worlds are *fictional*.
I'm wondering if there is a way to add fictional science while still feeling like science fiction. Some ideas I h... |
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I have a Mage who wields more power than any other (think a hundred thousand normal Mages). He gathered an army of cat warriors from the Guderian forest to his banner and attacked the Kingdom. The cat warriors are bound to him via his powers (he has the power to control all living things except humans). ... |
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Hydras in my world are much like a brontosaurus in form, but has three heads. Much like a hippo, hydras have incredibly dense bones, and sink rapidly in water. Hydras are almost exclusively swamp creatures, using their long necks (Which are like a large snake in shape) to keep above the water. Like a hip... |
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This question is complicated, so hang on. A medieval army made up mostly of foot soldiers wearing plate armor (although there are cavalry, they're going at the speed of the foot soldiers) with enough supplies to last them the journey carried in horse-drawn carts that go at the same speed as the foot sold... |
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I’m building a world where two civilizations are meeting, and both have fairly different design philosophies with weapons and armor, and the easiest way to sum it up is think Mass Effect without the relay network needed to travel, so they have weapons that fire tiny bullets really fast but also have to d... |
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**My interstellar empire is powered by a quasar.**
[](https://i.stack.imgur.com/ZEiVg.png)
Or at least it will be once I finish my scheme.
See that cloud of glowing dust? That's called the quasar's accretion disc. When stuff falls into t... |
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I'm talking about actual horns, not antlers that are shed.
I'm interested in either a rhino-like horn or an antelope like horn.
Would nail polish block any important natural process?
I'm thinking of humanoid creatures with animal horns and how they might accessorise
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**Actually, it can!**
From... |
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**I’m building a colossal tower. This tower forgoes the use of steel and concrete completely in favor of cheap lighter-than-air modules.** These modules have cube-shaped frames made of carbon fiber and other lightweight materials. To achieve lift, hydrogen sacs are used. Unfortunately more flammable than... |
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I made these sketches to envision a world where food is grown in buildings and people can live in forests covered lands instead of the land being used for agriculture. But how big would such a city need to be? Let's say the skyscrapers are about the size as they are in New York.
Description of first sket... |
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**This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information.
Some... |
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Fruit usually works in symbiotic relationship with animals by giving them food to take in and seeds to "deposit" elsewhere. But let's say you had a world where the dominant feeding method was liquivores. That means they inject their digestive fluids into their food and suck up the dissolved insides. How ... |
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The setting is fifty-five million years in the future on Earth, with multiple humanoid species that have different ancestors, but share similar characteristics. Their ancestors would be animals that live today, such as alligators, cats, crows, octopuses... but their descendants would evolve human like tr... |
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While similar questions have been asked, I don't believe kinetic bombardment was brought up, with focus centred around nuclear warheads.
Considering the ability for a "rod from god" to embed into the earth and cause immense destruction to the surrounding area, would such a scenario be realistically capab... |
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[](https://i.stack.imgur.com/bCEE5.png)A dramatic scene in my story requires a pursuit with a vehicle “threading the needle” in flight between some structures. I need to describe how small that hole would be in relation to a typical road... |
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In a vaguely Medieval setting with some limited magic, how would an underwater city handle sewage?
Sanitation was one of the biggest limiting factors in the growth of human cities, and being under water is going to make the usual ways of removing sewage less feasible.
Some points:
* These cities are bui... |
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**Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers.
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**Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/134854/edit).
Closed 5 years ago.
[Improve this question... |
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I'm trying to work on a chapter in my lore but I'm stumped on how agricultural developments could work in tropical settings, and real world examples so far mostly include temperate places, I.e. Britain (agricultural revolution of 16th to 19th century for example).
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# Introduction of foreign cr... |
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**Closed**. This question needs to be more [focused](/help/closed-questions). It is not currently accepting answers.
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**Want to improve this question?** Update the question so it focuses on one problem only by [editing this post](/posts/114922/edit).
Closed 5 years ago.
[Improve this question](/po... |
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For my world, I would like a coastal mountain range that partway along its length is offset by a few (say, 100) kilometres, forming a pass through the mountains, like so:
[](https://i.stack.imgur.com/QOgrN.png)
(N.B. I've drawn this very square and ... |
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This is a continuation of my [Specifics of magical symbols and casting](https://worldbuilding.stackexchange.com/questions/89906/specifics-of-magical-symbols-and-casting-what-makes-spoken-magic-difficult-to-m) series of questions.
**Air-Drawn magic** in this world would be invoked in a similar process as ... |
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A hyperparasite is "a parasite whose host is itself a parasite" and is the closest analogy to an apex predator in the ecology of parasites. Human sociability, intelligence and status as apex predators allowed us to develop civilization. What conditions would pressure a hyperparasite (or hyperparasitoid) ... |
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I am not a native speaker, so please forgive my errors.
Our space federation A is currently in the fiftieth year of a limited war with the alliance B, and the control of the K sector will greatly improve our position in this war. Our scout fleet has already surveyed the star systems in the sector, and ... |
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Let's assume that humanity in near future develops an AI capable of solving problems. The AI hardware/ software was placed in an underground bunker (solid walls, Faraday cage, no tools to manipulate its physical environment, no human interaction at all). The AI can't exploit human weaknesses, so it won't... |
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Lots of fantasy books have medieval style warfare in them and armies march all over the place to face one another in battle. Sometimes these armies are tens of thousands large, or even hundreds of thousands.
These soldiers in the real world would need to eat, sleep, have shelter and battle equipment. On ... |
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With our current technology we're able to travel through our Solar System (and beyond) during at least a human lifetime.
Is it physically possible that a star system has more intelligent lifeforms in different planets that belong to an habitable zone?
In other words, let's imagine there is an intelligent... |
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Imagine a generation spaceship, flying through the cosmos with little recollection of the original world and no destination in sight. Of course on this ship, there will be those in charge of ruling the ship and those that are not. This ship is heavily reliant on drones and other machines, so only special... |
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Let’s say we have 2 states. One gets invaded by the other.
**What does it take for an invader to successfully assimilate the population of a conquered state?**
>
> Successfully: At least 50% of the population has
> converted or is of the same language/religion.
>
>
>
* Does it need many invaders?
... |
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Suppose two stars orbit each other and the planets orbit around the two stars' barycenter. I'm thinking of having at least one as a main sequence G or K class. For the sake of argument, let the other star be a red dwarf. How do I determine the habitable zone of this or any binary system?
Thanks!
[Answ... |
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I needed a creature about 50 feet tall and King Kong from the 1976 movies fits the bill. According to sources he is 50 feet tall and weighs 7 tons (I raise a large eyebrow at that, but it is all I got). If you want seen that version, he is completely bipedal. How many vibrations would a human feel and fr... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w... |
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Charged particles such as protons are associated with the strong nuclear force and coulombic interactions, but as they're tiny, we can only perceive them through static. If a proton gets as big as a soccer ball - either by accumulating millions of protons or becoming - a single solid sphere of positive c... |
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**This question already has answers here**:
[How can a language be prevented from evolving and drifting?](/questions/174240/how-can-a-language-be-prevented-from-evolving-and-drifting)
(14 answers)
Closed 3 years ago.
So, this is the set up. Communities of wood elves spread out over a large area (t... |
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One reason I prefer classical western dragons over wyverns is that they aren't totally handicaped on the ground.
However, those forelegs are only supposed to be for better locomotion on ground and lack the power to be directly used in combat. Wings, on the other hand have much more muscle behind them. It... |
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I thought of a concept for a dragon or similarly gigantic reptile with a special adaptation, in which they’re born with scales made almost entirely of carbon. Then, over an incredibly long life cycle, the reptile would shed these scales, and replace them with diamond scales that they had formed inside th... |
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Armageddon is coming. A giant Texas-sized meteorite on a collision course with planet Earth is discovered in 2020. It will hit Earth in 2030 and will wipe out 90% of living things including humanity. Calculations show that throwing rockets packed with nukes at it to deflect it would be unsuccessful. Digg... |
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So in a webtoon that I am drawing/writing everyone is born with 1 or 2 psychic abilities that can range anywhere from teleportation, sensory manipulation, thermal conductivity, elemental kinesis abilities, etc.
And everyone’s ability is explained via science, some of it real and some of it exaggerated bu... |
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Simplistically, a [neutron star](https://en.wikipedia.org/wiki/Neutron_star) is a celestial body with enormous mass crushed into a small volume. That crushing force is gravity and the result, one might think, is atoms packed much more closely than they want to be.
**Background rumination in question form... |
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I wanted a creature that produces something in its blood to protect itself from SEP (solar energetic particles) and GCR (galactic cosmic rays). The skin of the creature is normally sufficient protection, but the world has radiation bursts which can penetrate this layer, and necessitate a second line of d... |
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The Anatomically Correct Series can be found [here](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series).
The [Chimera](https://en.wikipedia.org/wiki/Chimera_(mythology)) is another freaky specimen from Greek mythology.
[.
An activist thinks things in the USA have to change but knows (or is firmly convinced) that as long as only the Republican or Democratic parties are the only de facto options for the President no one who would actually threaten the status-quo f... |
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In 2053 a manned mission to the moon, using seismic sensors, discovers that it is not a natural satellite\*. The moon is actually an egg of *[Vespula](https://en.wikipedia.org/wiki/Vespula_vulgaris) ludicrousmegagiganto*. Note that the name is not truly scientific - the shape of the creature is just vagu... |
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In a question I saw on here a while back, somebody said that the development of a sapient, technologically progressing species requires fire, and thus such a phenomenon could not occur under water.
However, geothermal vents can become quite hot, and so could it be possible for an underwater species to us... |
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**This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information.
[Thi... |
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I recently learned of a fascinating art project being developed by Sam van Aken involving the grafting of flower buds onto a stock tree. You can find out more about the project itself by visiting the [official website](http://www.treeof40fruit.com/).
In theory, this art project will result in a series of... |
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Would an ancient civilization be able to build a bicycle if they thought it up somehow? It doesn't have to be a modern bike with handbrakes and multiple gears and shock absorbers. It could be one gear and just pedal backwards to brake.
As a concrete example, could the Ancient Romans have done this? **Pre... |
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In a few science-fiction books I've read, the world that the story takes place on doesn't have a sun, but does have a "sun belt," where (instead of a regular sun) the world is lit by a stretch of sky that's always there, and turns darker at "night time," and lights up more strongly at "day time."
This wo... |
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If someone has the magical ability to make a vacuum(no or minimal matter/atmospheric pressure) on earth around someone would that person in the vacuum then sh\*t their pants? If so would it have to be a perfect vacuum?
A small bit of background. This would be like a spell or magical ability someone had. ... |
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I am envisioning a weapons team that can carry around a coilgun about the same size as a recoilless rifle.
[](https://i.stack.imgur.com/0tdwy.jpg)
*The L55/12.M Crew Served Coilgun from Kaelo Engineer... |
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Some things about my giants:
They're extremely limited in number as they are made through surgical & genetic modification to regular humans rather than being a separate species as well as only a small amount of facilities being able to do these modifications.
They have all over armour capable of stopping... |
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I like to play with superlatives. I want a government that pretends to be rightly-guided by the most sacred morals and ideals, but in reality is filled with fat cats who only care for themselves. However, the people must not know about it; they know about corruption in other countries, and the clear majo... |
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Long ago, an Eldritch deity was summoned to the city of Innsmouth within a ritual circle, where it was killed and consumed by the population. Devouring the flesh of the deity increased the mana supply of the individuals to astronomical levels, strengthening their arcane abilities. As the population grew ... |
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Alright so I have this big colony ship/artificial world and I need to figure out what kind of population it can support. I’ll cut right to the chase and give you the details.
* Length: About 1,000,000 miles long
* Diameter: 100 miles
* Circumference: 314 miles
Some more details, people live on the inside... |
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Let’s set some things up so that we’re all caught up:
In 2015, the apocalypse happened; rising sea levels compounded with the Black Flu (deadliest pandemic in human history killing billions around the world) wiped out the modern world. Every nation has collapsed and the “old world” for all intense and p... |
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Plant-based clothing comes in a variety of forms, both stereotypically and historically: grass skirts, barkcloth, *et cetera*. But one form I have only ever seen in fiction is clothing made from straight-up leaves (whether woven, sown, or whatever). It has a fairly established place in both fantasy garb,... |
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Much of the struggle with terrestrial fusion power seems to be with keeping the ultra-hot plasma contained. In a classic Tokamak configuration, magnets using massive amounts of power, suspend the plasma in a torus that contains the incredible heat and prevents it from melting the containment apparatus. S... |
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Suppose a team of astronauts have travelled to another solar system, and are currently living in a craft which is in Medium Earth Orbit of a planet which has oceans, continents, and complex life. Assume that among them are people of every relevant field of science, and onboard there is all equipment nece... |
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**Question Context:**
I've been developing insect-looking bipeds that have evolved on a mostly jungle/ocean planet in addition to small, scattered grasslands. This is justified (from what I've read) by a thick nitrogen/oxygen/carbon-dioxide and humid atmosphere, significant amounts of water, continents m... |
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I am writing a story centered around a planet orbiting a Blue Supergiant star.
What I want to know is how far away a planet would have to be to be in the habitable zone of such a star. The star I have in mind is roughly comparable to Rigel and don't mind anything like the need for protection from radiat... |
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Let's say there was a Type II Kardeshev Scale civilization that suddenly went extinct. Why would the entire species just die out? An added condition is that they knew of their impending destruction well ahead of time to make preparations to preserve the detailed record of their civilization.
I was thinki... |
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What role do satellites, communication towers, GPS, etc, play in the operation, and specifically the landing, of a space shuttle?
If those and any other human-made things suddenly disappeared, could an astronaut in a shuttle in space still return to earth and land manually?
[Answer]
Well, the space sh... |
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Full version of the question: ***How would a plant adapted to living at -23 degrees Celsius keep the water vapor it transpirates from flash freezing to the surface of/within its leaves and clogging its stomata?*** (It was over 150 characters.)
So, this is partially inspired by this question:
[I want a la... |
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So I have a planet that is slightly larger than Earth, orbits an orange star slightly closer than earth orbits the sun, has extreme weather patterns and volatile tectonics. It has bad storms, temperature extremes, radiation storms, intense magnetic fields, high winds, you name it. Obviously the planet is... |
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I am looking for medically viable reasons why we might discover it to be more difficult than expected to bring pregnancies to term in space. This is for a society based approximately 75 years in the future that was forced into long-term space travel with limited time for preparation, which is to say tech... |
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**Closed**. This question needs to be more [focused](/help/closed-questions). It is not currently accepting answers.
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**Want to improve this question?** Update the question so it focuses on one problem only by [editing this post](/posts/91199/edit).
Closed 6 years ago.
[Improve this question](/pos... |
[Question]
[
This is a continuation of my [Specifics of magical symbols and casting](https://worldbuilding.stackexchange.com/questions/89906/specifics-of-magical-symbols-and-casting-what-makes-spoken-magic-difficult-to-m) series of questions.
In the process of splitting my post up, I noticed my final question got a b... |
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Acording to my understanding of the word "swamp", we must have at least 3 components put together:
1. Water in abundance
2. Vegetation
3. Soil for the vegetation to take hold (and eventually to produce mud when mixed with water)
So, I wanted to have a swamp, placed on an underground gallery accessible th... |
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**This question already has answers here**:
[How would societies be if created and populated only by young people?](/questions/7168/how-would-societies-be-if-created-and-populated-only-by-young-people)
(8 answers)
Closed 6 years ago.
So in this scenario everybody over the age of fifteen years has ... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w... |
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I'm trying to figure out a concept for some sort of super-advanced space propulsion system that works by bending spacetime. As I understand it, planets' orbits are actually straight paths, but they move through a spacetime sufficiently curved that they travel in ellipses around their system's center of g... |
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The [Black Death](https://en.wikipedia.org/wiki/Black_Death), which claimed an estimated 75-100 million lives, was one of the most devastating events that is still well known today.
What conditions would allow the [plague](https://en.wikipedia.org/wiki/Plague_(disease)) to spread and kill on a larger or... |
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I am trying to design a world where one pole is very cold, and the other is very hot. I don't mean that there would be instant death in either, but it is colder than our South Pole on one end and warmer than our equator on the other. I don't know if this is possible. Is there a way (maybe incorporating $... |
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Let's say a new science-based cult takes over the world and convinces the vast majority of humans that 10 Billion is an unsustainable number of people for our planet. They want to reduce the number to 2 Billion. There are no dead-lines, as some meager sustenance is enabled by science. However, most peopl... |
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I'm writing a story set in our own future1, where networked devices are even more ubiquitous -- and more capable -- than smartphones today. Part of the story, however, hinges on the main character putting a "memory chip" into her phone, which [hijacks her phone](https://srlabs.de/badusb/) to enable a sec... |
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**What is the best dinosaur to have as a pet, if the goal is to have it do tricks?**
It all started as a joke among us, the idle children of the technocratic class that effectively, in all but name, took over the United States in the mid-2030s. The lolcats of yore were replaced by dinosaurs, and a dino-c... |
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I was thinking of a world in which there are two different countries that are in the exact same location at the same time. Despite being in the same location these two countries speak different languages, have different cultures, different types of government, and different laws. What effect would this h... |
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In this world you have access to computers powerful enough to decipher messages as long as the method used to encrypt it has at least one theoretical weakness (those computers cannot defeat an impregnable encryption method).
In other words: if it's feasible then the computers can solve it in less than on... |
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*Note:* This question is a follow up to [this](https://worldbuilding.stackexchange.com/questions/3598/how-would-tectonics-behave-on-a-two-continent-planet) question, and hence forms part of a bigger complex of questions about geology and biology in this certain scenario.
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*Meta:* The planet consists o... |
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In real life nothing breathes carbon monoxide, but it still binds to the things that are supposed to carry oxygen around the body to my understanding. Could a form of life be able to actually use carbon monoxide to survive in an area with an unusually large amount of carbon monoxide in the air & little O... |
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The astral realm is the place where magic in our world originates from. Priests of the Aztec empire can access that magical power for their own purposes through the use of spells and rituals. The amount of power they wield depends partly on their own abilities, but also on the amount of magic within the ... |
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I have a planet with a surface gravity of 0.9 times that of Earth, and an escape velocity of 11.3 km/s, and a temperature like Earth's. My question is if it could retain a breathable atmosphere (for humans) but with more surface pressure than on earth (maybe around 1.5 atm). If so, what would be its comp... |
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The mineral handwavium contains a naturally occurring, stable form of antimatter (i.e. prevented from coming in contact with regular matter) that can be mined. How is this even remotely plausible?
Ideally, this would be available via some planetary mining, but I'd settle for needing to go into space to g... |
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I've been digging into some very interesting, related questions from the past (the one I found the most useful was [this one](https://worldbuilding.stackexchange.com/questions/5097/could-plants-develop-intelligence)) and I don't think anything covers my question. So if I missed it, please do let me know.... |
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So far In my research I have not found any estimates for the speed that a solar sail spaceship could be propelled to using a Dyson beam.
I have not decided what mass the ships will be that I want propelled as although a Dyson beam would be very powerful, the mass of the ship may make other propulsion met... |
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Airships are interesting vehicles, in that they are, as far as I know, the only ones to turn the [square-cube law](https://en.wikipedia.org/wiki/Square%E2%80%93cube_law) to their advantage. For a proportional increase **X** in length, width, or height of the gas bag, the lifting power of the airship incr... |
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Barnacles are a type of arthropod constituting the subclass [Cirripedia](https://en.wikipedia.org/wiki/Barnacle) in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. Typical a... |
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What conditions could make an army have its MBT be amphibious with all the tradeoffs that has? While many nations have made amphibious tanks, none (other than sweden that one time) have done it for their MBT. This can't be through handwaving trade-offs like having some super materiel so that a regular ta... |
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There are many depictions of sea-serpents and other similar creatures in a strange pose: The head (and often the tail too) is held above the water, with the body being arched in such a way that some of the body is out of the water. How and why would an animal hold itself in this way?
[. How did it happen? It can be magic or some unfathomable technology indistinguishable from magic. I will inv... |
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Gills are fragile, exposed continuously to parasites and bacteria. Having gills is like going around the streets with "eat my respiratory system please" written on your back.
Plus animals with lungs breathe better and thus grow larger and stronger.
What situation could create a world where gills never ev... |
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I'm crafting the worlds and cultures of my own Alien societies and a near-future human world (near-future Earth), it's the first time I've attempted this in detail. Everything I've found so far about building cities is based on medieval technology and is unhelpful. I need it to be relevant to now and the... |
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