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What could be found underground that would provide fibres that could be turned into textile? The source of the fibres should be found buried in soil, in temperate regions. It also should be something that could have evolved (or otherwise come to be) on Earth. Preferably, it would also be possible to bree... |
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so I'm in the process of creating the map of my fantasy world, which has a medieval fantasy theme. I saw a few posts and videos, such as this one, that talk about using Natural Borders to define my borders: <https://www.youtube.com/watch?v=iZJJpy3huLg&t=618s>
Right now I'm adding my mountains before I st... |
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So, in this history, they just said *"screw it, I'm giving railguns to the army"*, and they added a machine gun like rifle with big caliber, but low recoil, they carry a backpack with batteries and a lot of ammo.
But since I don't really know how much energy a railgun would require to shoot a bullet in t... |
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**This question already has answers here**:
[How would a person see with an adjustable cross-shaped pupil?](/questions/60005/how-would-a-person-see-with-an-adjustable-cross-shaped-pupil)
(4 answers)
Closed 2 years ago.
After watching the science fiction film Chimera, I noticed that one of the main... |
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Suppose I am a super-being. From the outside I look and act exactly like an ordinary human. My flexibility of limbs is the same as that of a human so I can't shape-change or bend my arms unnaturally.
My superpowers are strength, speed and endurance. I can move my arms, hands, fingers as fast as I like. M... |
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Okay, I am designing a dragon. The average adult male specimen is about 20 feet long, with an extra 5-8 ft of the tail; females are slightly smaller. Their wingspan is approx. 20 ft. ... |
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In particle accelerators, particles are typically accelerated within a vacuum (or as close to it as possible) in order to minimize interference and collisions with air molecules during the acceleration process. This usually isn't a problem as the target of the particles are also contained within a vacuum... |
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Just a few days ago on DeviantArt, I found this map by MoshiDungo:
[](https://i.stack.imgur.com/LhRqz.jpg)
The title of the map is [What if the Americas colonised Europe?](https://www.deviantart.com/moshidungo/art/What-if-the-Americas-co... |
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So here's the idea, ~35 million years ago Antarctica was still quite habitable. This is far to early for hominids but what if a humanoid species arose in South America and migrated south into Antarctica? What kind of ancestor could work? They would have the look roughly human but don't have to look ident... |
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What wing design is best-suited for gigantic flying vertebrates, and why?
The wing designs I'm considering are Bat Wings, Bird Wings, and Pterosaur Wings. I'm leaning towards Pterosaur simply because the largest flying animals ever were Pterosaurs, but assuming that evolutionary lineage was irrelevant an... |
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[Clarification of [an XY Problem](https://worldbuilding.stackexchange.com/questions/171870/magic-proofing-currency)]
I am currently developing a world with a hard magic system based entirely on manipulating the natural order of reality in accordance with physical possibility. As long as the ultimate end-... |
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Imagine an Earth-like world with oceans, some complex vegetative and animal life, but with an extreme low amount of oxygen in the atmosphere, let's say one third of what we are accustomed to, like the death zone of Everest, but on the sea level.
Imagine a ship with colonists from Earth arrives on this wo... |
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In my setting, there are basically no biological life forms left, as everyone has either been mind-uploaded or is an artificial intelligence. It is supposed to take place at a very distant point in the future post Andromeda-Milky Way merger, so technology has had a long time to develop and the computers ... |
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So, we have five floating islands in the southern sea. Their surfaces are mainly composed of fields of grass and fruit trees (weeds, non-profitable trees, etc. are disposed of) A dozen or so feet of earth separates the surfaces of these islands from the root cities beneath them. The island cities are clo... |
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Is it possible in 21st century Earth for someone to create a small super insulated box to store heat like an "anti-freezer" such as putting lava inside the box and the box not being hot to the touch because it is so insulated yet inside the box contains molten lava?
How small could this box be made and h... |
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NOTE: I previously asked the same question regarding wheels, because I thought that the answers would still help me and that wheels were more applicable to a wider audience than propellers. However, I deleted it after realizing it was a duplicate. I should've just asked my original question, since biolog... |
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The following scenario takes place on Earth, sometime in the next few decades. An unethical biotech company has developed a deadly bioweapon that uses humans as a vector, almost like a suicide bomber strapping a bomb to their chest. A rogue state decides to hire the biotech firm, and use this bioweapon t... |
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We actually today have programs to keep an eye out for various rocks in space that may hit Earth.
It's a common sci-fi trope that when one is on course to hit us, we deflect it.
That's pretty much done "using nukes" or in some schemes, ingeniously using some sort of relatively low power rocket-like engin... |
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I have a story based around DNA manipulation by biological creatures that evolved into what they are today, but can gain abilities by taking the DNA of other creatures.
The story is set in the present with the current technology we have, with the exception of more human-like robots than we are capable of... |
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We had a long discussion in my office about this - if we were in a smallish 500m diameter O'Neil cylinder would hot air balloons work?
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Yes, certainly.
The rotation creates a gravity-like effect for everything that follows the rotation, which includes the air. If the hot-air balloon is lighter... |
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Gravity does exist in this world, and so does air and clouds. But this creature only has enough weight to stay in the air without falling or being lifted up. It's big like a whale and it does have mass as in it takes much force to accelerate it in any direction. So it's like in outer space but it's on th... |
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**Charge-type breath weapon**: Creatures with this type shoot **singular, high-damage, high-precision "charges" of (insert dragon's element here) that explode upon contact.** Examples: Toothless from [the movie *How To Train Your Dragon*](https://www.imdb.com/title/tt0892769/) and the [Ender Dragon](http... |
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[](https://i.stack.imgur.com/ET4I1.png)
This is a model of Volkshalle, the People's Dome, part of a vision of "Germania" by Adolf Hitler. But the tides of war had washed Germania away, yet this and other architectural plans by Albert Spe... |
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While thinking about [Starfish Prime's answer](https://worldbuilding.stackexchange.com/a/153473/627) to the question [Algae using UV light from auroras for photosynthesis](https://worldbuilding.stackexchange.com/q/153439/627), I considered the possibility of an alternate Earth which has a normal, Earth-l... |
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Wouldn't it be cool if giant monsters were on giant planets? Of course it would be, but unfortunately physics doesn't really like that idea. Big planets make things on them need more support, so being big *sucks* on big planets. It's alright on teeny ones, but bad on big ones. You'd also probably want hi... |
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If the outer ring of a rotating space station was producing the equivalent to 1G, but a higher G was needed could in small modules, could a bolo-like attachment be included with the ring to accomplish this?
[In the illustration below of a bolo arrangement, artificial gravity is achieved by having two mod... |
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**This is a ludicrous question and isn't meant to be serious. I had an idea of catapulting people with parachutes and thought it would be funny. This was inspired by [Elemtilas answering a previous question I had](https://worldbuilding.stackexchange.com/a/141723/62335).**
Could a trebuchet deliver a pers... |
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I've read a lot of questions about the specifics of meteor impacts on this site, but strangely this one seems to still elude me:
Assume a meteor of sufficient mass and speed to wipe out human life *within a week* (if not sooner) impacts the planet. What does this look like from the perspective of a perso... |
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I apologize if this question is not written up to standards, I am rather new to this site.
I have been an avid fan of chucklefish's acclaimed sandbox title, *Starbound*, for a number of years now and one question has always stuck in my mind. Is it plausible for the Avian species to exist? The Avians are... |
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Let's say we have the technology to produce all of the human food in factories without the need for land (i.e. [Solarfood](https://solarfoods.fi/), [Memphis Meats](http://www.memphismeats.com/)). Right now, there is about [50% of all habitable land use for agriculture](https://ourworldindata.org/wp-conte... |
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The title says my question exactly. **Also if another mode of general transportation were invented for a landlocked city, what would it be?** Below are the specific fantasy species that I am dealing with.
Note that these are not all of my species, but they are examples of all the different structures and... |
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# Context
I have been thinking about the Pip Boy device from the Fallout series of videogames. It is a portable, wearable computer that can gather a lot of data about the user. It looks like this:
And gives out readings such as this:
![Pip B... |
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In the world I'm constructing, I have equine centaurs. I was going over my research and my notes for centaurs, and I realized that most horses are put down when they break a leg. Now, these centaurs live in a society on par to ours, and they wouldn't let someone die for such a simple injury, especially n... |
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On 20 October 1861, while in Paris, [Ferdinand Maximilian Joseph Maria von Hapsburg](https://en.wikipedia.org/wiki/Maximilian_I_of_Mexico), brother of the Emperor of Austria-Hungary, received a letter from [Jose Maria Gutierrez de Estrada](https://es.wikipedia.org/wiki/Jos%C3%A9_Mar%C3%ADa_Guti%C3%A9rrez... |
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I'm designing an alien creature that has a similar body structure as a theropod. Now one thing about this creature is that it lives near bodies of water like lakes or shallow seas because that's where its prey lives. However, it does not prey its victims outside of the water but rather going inside tge w... |
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## Premise
[Ahkenaten](https://en.wikipedia.org/wiki/Akhenaten) was a bit of a heretical pharaoh in ancient Egypt. While it was customary at the time for the pharaoh to choose a god to be associated with, Ahkenaten went further and proclaimed his chosen god to be the only true god and disenfranchised the... |
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As requested by [JBH](https://worldbuilding.stackexchange.com/users/40609/jbh), I edited this question to fit the [Anatomically Correct Series](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series).
The classic zombie is no mystery to anyone: undead, eats people and mul... |
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The multiverse is made up of different realms, each with their own human population. These realms are planet sized, and have their own cultures and traditions. Realm gates exist in each of those realms and connect them to each other. The church of an organized religion control these gates and are the glu... |
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We have a regular Earth as we know it, but instead of humans, there is this worm-like race, intelligent similarly as nowadays humans.
Their inner physiology is different from our worms (and not important for the question) but from outside they're the same as worms [as we know them](https://en.wikipedia... |
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**This question already has answers here**:
[Probable criteria for Ramming to become popularized for Space Combat](/questions/45641/probable-criteria-for-ramming-to-become-popularized-for-space-combat)
(21 answers)
Closed 5 years ago.
This is a fairly simple question, and the heading is pretty sel... |
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In the year 2340 on the planet Ionia, a small colony of about 20,000 people was founded. They were camped out near a small lake between two canyons. The colonist all came from advanced planets like Earth and Andon, and their colony was equally advanced.
They had fusion generators and cloning technology,... |
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I am trying to write a TV series based on the ""virus kill all adults" popular premise.
The difference is that it should be very realistic and based on research in biology, sociology etc.
The second thing- the plot location is in the border between Israel an Gaza dealing with the Arab -Israeli conflict... |
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How would a horizon inside of a ring or a toroid look like?
As if a planet's surface was concave, instead of convex, how far away would the horizon appear? Im trying to get a handle on what the inside of a ring, or a toroid would look like.
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How far the horizon appears does not depend solely o... |
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Could a small isolated island without trees yield alternative resources that enable Polynesian-level seafaring technology?
The island of [Rapa Nui](https://en.wikipedia.org/wiki/Easter_Island) (known as Easter Island in English) had an overpopulation problem. They also didn’t have any pigs, so a major so... |
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I've done a question about [Aerial battle of knights riding flying creatures... How would they fight?](https://worldbuilding.stackexchange.com/questions/79065/aerial-battle-of-knights-riding-flying-creatures-how-would-they-fight), that was put [on hold] for being too broad. So I'm splitting the question ... |
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I'm trying to think about the anatomy of a snake-like creature that would be maybe 2 or 3 times as long as a blue whale. I would also like for it to be able to lift its head and neck above the water. How can I not have its bones break from the pressure? And how would I solve the problem for blood flow? B... |
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The dominant species on this alien planet are sapient, somewhat monstrous bipedal creatures. They possess no eyes at all, are completely blind, and have no concept of vision.
Other senses are as follows:
* Touch: Their tactile senses are equivalent to a human's.
* Hearing: They have sophisticated hearing... |
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Imagine a pair of black holes in orbit around each other. I'm wondering how this would distort their mutual event horizons. In fact would it be possible to "break" the event horizons by reducing the escape velocity below the speed of light at the point in between the two holes.
If my mental model is righ... |
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My bureau has recently been provided with a city charter and the plans to develop the colonial territory of Endrast into an urban center befitting the dwarven people, but after reviewing the documents I am concerned by the possibility of suffocation.
Mr Grin, the lead architect on this project, has assur... |
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One of the many empires to come from the Roman empire, the Frankish Empire was the territory inhabited and ruled by the Franks, a confederation of West Germanic tribes, during Late Antiquity and the Early Middle Ages.
[](https://i.stack.... |
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What would happen to occupants of an [O'Neal Cylinder](https://en.wikipedia.org/wiki/O'Neill_cylinder) if it suffered a massive hull breach on one of its ends i.e. the base of the cylinder? Specifically, those nearer to the breach.
If the breach occurred catastrophically (explosion or some kind of hull f... |
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I checked yesterday the movie [The Purge: Election Year](https://en.wikipedia.org/wiki/The_Purge:_Election_Year) (American Nightmare in French, which does not make sense because the title is already in English but nevermind), and I found it to be a correct entertainment film. Nothing surprising about the... |
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I'm looking for biological explanations for some traits I want to give to an alien creature.
**Description of the Creature**
It looks like a five foot tall praying mantis, or perhaps a centaur. It has six limbs: Two big hind legs bent like a grasshopper's, along with two cat-like legs, on its lower body;... |
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If there is a planet whose atmosphere consists of :
* 30% methane
* 70% oxygen
Then, can we land on it? If yes, then how, and why would it not explode? Also, can such a planet exist for a long time?
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# Only if you have a serious death wish
Take a look at this...
[![enter image description her... |
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Can you make devices that produce and use electricity like power supplies, motors, light bulbs, etc. in a society without metal? Not just metal isn't in the device, you can't even use metal in the production process.
Edit: There is enough trace metals for human biology to work, but not enough for metallu... |
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I'm writing a setting for some fantasy novels, and came up with an idea about weather and climate.
The world I'm imagining has an elliptical orbit around a binary system, giving it basically 2 stars. My question however regards the seasons cycle. The way I've drafted it is that such a planet would perfo... |
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I have an alternate-history story taking place during an extended end of WW2.
For [naval mines](https://en.wikipedia.org/wiki/Naval_mine), I need them to be disarmed if a 'friendly' ship (let's say Axis) bumps into them, but detonate if the Allied ship hits it.
We have all sorts of GPS, etc., if we care... |
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For my space-fantasy setting I created that I will refer to as Dragon-Folk here.
The Dragon-Folk look more like [humans with reptilian features](http://starwars.wikia.com/wiki/Falleen/Legends) than [humanoind dragons](http://forgottenrealms.wikia.com/wiki/Dragonborn). The Dragon-Folk like the other races... |
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They say that the best weapon is the weapon you don't need to fire or you only need to fire once.
Firepower has always worked as a deterrent... but why is it so effective and how can you employ it the same way in a medieval fantasy world without the direct use of magic?
**The situation**
* The empire
The... |
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I'm going to use the US model for the simple reason that I'm most familiar with it.
## Constraints and assumptions
* In the US, legislative representation is by region (state) and
population levels.
* Assume that uploaded personalities are granted the franchise.
## Question
Given that an uploaded persona... |
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## Setting
Humans have spent centuries investigating human consciousness, brain physiology, AI, and other technologies. We've finally figured out how to "upload" a "consciousness" (these are quoted because I don't really know what this means at this point).
Personality upload is non-destructive so the or... |
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In the near future autonomous machines will be running around with various degrees of intelligence.
Something like a current mailcart that makes rounds on clockwork is pointless to talk to. A "dumb" robot may take voice commands but using colloquial language will confuse it, and being polite is not only... |
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I would like to explore how to design an alien planet featuring plants and animals but with a much more prominent ecological role for fungi. More fungi, larger fungi, more complex and beautiful fungi.
Fungi are heterotrophs so they still need plant (and animal) matter to feed on.
**What type of world w... |
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It's always ~7:30 PM.
Gravity and air are normal, and clouds and winds and storms exist, but there's no moon, and the sun is always just touching the horizon, without ever moving in the sky. The weather doesn't vary much. Temperatures never stray from 65°–75° Fahrenheit.
(Assume that the exact circumstan... |
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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.
Many... |
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I decided to re-watch [Jericho](https://en.wikipedia.org/wiki/Jericho_%282006_TV_series%29), and I got quite fond of the isolation scenario.
Jericho is a TV-series where...
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> ... there are a few nukes that explode in the US, making all cities that are not affected by the blasts and radiation complete... |
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Suppose that approximately 2 million years ago, a mutation developed in hominids that allowed males (and only males) to access magic-type abilities. For the purpose of this question, consider this to be telekinesis (TK) that's roughly twice as efficient as using muscles, energy wise. It rapidly spreads t... |
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Starting with [this question](https://worldbuilding.stackexchange.com/questions/20275/what-society-might-survive-the-3-generation-rule), in which I wondered what a society might look like that could survive the 3 generation rule...
Assume you have a crew and colonists on-board a generation ship headed to... |
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In a galaxy where there are thousands of sentient species and even more languages, a universal translator implant was developed to make communication possible. The software is regularly updated by linguists, neuroscientists, and artificial intelligences working tirelessly to maintain a well oiled system.... |
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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/15585/edit).
Closed 8 years ago.
[Improve this question](/pos... |
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A race in my WIP has a humanoid torso and a quadrupedal lower body. I like the look of the [Japaneses Bow](http://en.wikipedia.org/wiki/Yumi) and I was thinking of having it be developed by the centaur-like race. It is theories that the shape of Yumi is in part do it meant to be wield from horse back. Si... |
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# Chemoautotroph Flora
In a world where there is not much sunlight, I still want to have life. Specifically, I want to capitalize on chemoautotrophs so much that the alien schoolchildren learn something like "the source of life is volcanic vents" and flora which use photosynthesis is considered the odd m... |
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This question builds off [Information Exchange In Space](https://worldbuilding.stackexchange.com/questions/10428/information-exchange-in-space) and [How would interstellar internet work?](https://worldbuilding.stackexchange.com/questions/4389/how-would-interstellar-internet-work), and specifically uses t... |
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There is a system that allows compatible humans to download and fully integrate into their minds the skillsets of the most knowledgeable experts in a field. Note that not all humans are compatible with all skills, and some skillsets have prerequisites that must be in place for the graft to 'take.' The sy... |
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Suppose there's a planet that has similar characteristics of Earth and can provide life, suddenly shatters in many pieces and scattered over the system. A small but very dense object is attached into the bottom of one planet fragment that has enough mass to provide enough gravity for other side of the pl... |
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I'm starting a story taking place around 2080 AD/CE, and I'm wondering if the key element - global pollution - is plausible.
In my storyline, the XXIst century brings no huge technological advances (I mean nothing truly game-breaking). Mostly increased efficiency in computing power, a few new materials, ... |
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So again, in the book I'm writing, and yes, I do understand it is not plausible for humans to fly, I want one of my characters to be hit while flying and continue to fly with broken ribs. Now along the bounds of fantasy (and I still want it to be realistic enough)
I'm not sure a bird, though quite differ... |
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Let's say due to time travel shenanigans, a millionaire has acquired an ichthyosaur:
[](https://i.stack.imgur.com/pb4hN.png)
What must our millionaire do to keep his new pet long term? Could it just eat modern fish? Would the salinity be... |
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I need a [hidden outpost](https://worldbuilding.stackexchange.com/questions/225150/how-can-my-pirate-haven-remain-hidden-and-safe-while-running-illegal-activities) to have signs that only a certain real-world technology can see and comprehend. These are basically road markers, or navigation aids, that wo... |
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I'm writing a short story, and one of the species are Material Demons. I plan on there only being a single Material Demon character, but I'd like to know what weapons the Material Demons might use. This is meant to be about an individual, not large groups, but if you'd like to, feel free to consider grou... |
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What would humanity's most reliable method for food look like on a planet where the sun never sets, great winds raged across the land, and large-scale storms were commonplace?
I'm curious if large-scale agriculture would be possible in such a setting given the technological limit. What type of plants wou... |
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In a magical system similar to that of Eragon, where magic depletes the body as if they had manually done the same action as the spell effect (e.g. Magically moving a boulder would deplete the body of energy as if the caster had manually moved it, only on a much shorter time frame), how would the below "... |
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My protagonist is stranded on an alien planet. Fortunately, along with ready supplies of food, shelter, water, electrical power, etc. she has a functioning high-end smartphone. She uses this smartphone as a sextant and after observations and a bunch of math she determines:
* How long a day on the planet ... |
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A reality warper has the power to manipulate reality. Users can create, shape and manipulate reality just by thinking about it, and may alter something as tangible as physics and the universe to something inconceivable like logic. The reality of the mortal realm is held together by a series of crisscross... |
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In this world, mages can create a wide variety of spells, but they all have the same basis: creating or manipulating an element or both. They all also use mana. Mages are extremely common, as the vast majority of adults can cast using 2 elements. (The elements in this book are the standard fire, earth, w... |
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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.
If w... |
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I'm new here and know very little about chemistry.
For the sake of a story I'm building, especially with symbolism, I'm having a fire person and a water person coexist in a romance. However, I'm using real world phenomena to help demonstrate it. I'm finding it easy to have water "live with" fire in some ... |
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There are a lot of fictional settings that have some sort of elite peacekeeping organization that is tasked with keeping people safe or keeping things "normal" and are [frequently depicted as being above ordinary law in some way](https://tvtropes.org/pmwiki/pmwiki.php/Main/EliteAgentsAboveTheLaw). The *S... |
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I realise this about as useful as asking "how long is a piece of string?" but bear with and I will attempt to set parameters.
OK, so there has been an apocaplyse and now, at the time of my question, a century later, mankind has been reduced to a strictly ground-based existence. Many of the old timers hav... |
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In this world, a certain kind of hive-minded machine intelligence has spread and become endemic. It consists of a set of microbots capable of decomposing and re-smelting metal. Given raw materials, they can make more of themselves, they can link up into a semi-intelligent neural net, they can re-shape th... |
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I am in the process of imagining a world in the late 2020s which is divided into two blocs:
* an alliance A of countries in which the governments strongly assert the idea that "general intelligence" as measured in "IQ" is inherited (say as the mean of each person's parents' IQs); and
* another alliance B... |
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This question is a follow up to a previous question asked by @AvengingEarth
[Would a smart phone work on an alien planet?](https://worldbuilding.stackexchange.com/questions/185579/would-a-smart-phone-work-on-an-alien-planet)
I'm interested in taking a step further.
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All conditions are as in the previo... |
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My world is a medieval high fantasy setting. Dragons are one of the many denizens of the world. They speak a complicated language. Humans and other common races know most dragons to be cunning, intelligent, wise. Dragons consider most races to be subordinate to them. Does it make sense for the common hum... |
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Ringworlds are a bit of a SciFi staple but as they're commonly portrayed, the large ones have a major problem... they'd, well... ***explode*** if they were built out of materials that actually existed. This, as you can probably imagine, *makes habitation rather difficult*...
The issue is that as the ring... |
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In a short timeframe, Earthlings have developed quite an array of fantastic technologies, perhaps spurred on by an industrial revolution owing to early and abundant access to fossil fuels. Go outside these days and you might see someone wearing an [elaborate device on their head](https://en.wikipedia.org... |
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In my world slimes are intelligent creatures of various sizes which can take the shape of anything they like and change color to camouflage.
A slime can camouflage as floor , as a box, a snake or even a person standing up..basically as anything.
Their ability to mimicry is only limited by their talent, ... |
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Roughly how long could an ['Oumuamua](https://en.wikipedia.org/wiki/%CA%BBOumuamua) type object get if created naturally or if created artificially using fused rock? What would be the limiting factor governing the length of such objects?
Oumaumau was a strange elongated object that entered the Solar Syst... |
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Scenario: Humans need to create a pull factor for people to move to and establish cities and economies in less comfortable and densely inhabited places, because they're a bit full already. The humans of this time have the magical gift of being able to collaborate on a global level.
Using the science we ... |
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That insolent lightning mage Zyzzx has claimed that he'll be promoted before me because his lightning magic is superior to my heat magic. Preposterous, I know, but to show that smarmy bug-zapper who's who around here, I need to demonstrate to the university that heat magic can do anything lightning magic... |
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A group of scientists have been commissioned to create a new kind of super soldier. As this project includes illegal human experimentation, the government wants to limit the risk of anything being traced back to them, selecting disposable people for the process. Illegal human immigrants from Latin Americ... |
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