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[Question] [ Previous parts here: [Creating a scientificly semi-valid super-soldier, part 1: Skeleton](https://worldbuilding.stackexchange.com/questions/106292/creating-a-scientificly-semi-valid-super-soldier-part-1-skeleton) [Creating a scientificly semi-valid super-soldier, part 2: nervous system](https://worldbu...
[Question] [ Note- This question was partially inspired by the civilization in Star Trek: Voyager Season 6: Episode 12 "Blink of an Eye", plot [here](http://memory-alpha.wikia.com/wiki/Blink_of_an_Eye_(episode) "here"). You are an ordinary person, with an ordinary life, and an ordinary house. One day, you wake up an...
[Question] [ Would a seer have to learn how to operate a machine (say, a smartphone as a trivial example) if she can just observe herself operating it in the future? Would this make tutorials, courses, user manuals, etc. obsolete? Would technologies intended for precognitive people then be designed to facilitate lear...
[Question] [ By the time we develop the technologies necessary for travelling between stars, I think it is fairly likely that we would have already developed the technology to digitally augment, edit, and upload our minds. After that point, it's almost certain that transhumans are created, and posthumans shortly afte...
[Question] [ In my fictional country, you are not allowed to be a vegetarian. Meat eating is recommended and mandatory. The law prohibiting vegetarianism was created somewhere around 1780-1850. The question is: **What could cause a country to frown upon or even outlaw vegetarianism and make meat eating mandatory?** E...
[Question] [ > > It took Alynn two days to escape the villagers, her would-be killers. Two days - the same amount of food she'd taken in her rush to escape. > > > Being magical was all very well, but its reliance on her eating was sometimes annoying. Getting food might not be a problem, but if she couldn't find en...
[Question] [ So, in this fantasy preindustrial world almost everyone can cast small spells like spark within a one meter radius from their mouth. Taking that into account, igniting mechanisms like matchlocks or flintlocks might seem redundant. What would firearms look like and function in this world? And what would b...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- This question does not appear to be about **worldbuilding**, within the scope defined in the [help center](https://worldbuilding.stackexchange.com/help). Closed 3 years ago. [Improve this que...
[Question] [ I have an idea for an energy source for a colony on a cold world with not enough solar power. Is my idea workable, or is it debunked as perpetual motion machine? Here is the set-up and my plan: **Scenario**: Humanity has made giant steps since the landing on the moon. Better and faster space-travel allow...
[Question] [ The basic idea is that a small group of people, that were infected by the virus but managed to survive, has their hair colour changed to white and their eye colour changed to green. Said traits would then be passed on to future generations. --- Some context info (changeable if needed): 1 The affected gro...
[Question] [ Assume a world in a distant (2100+) future. Assume an exponential construction rate (1, 2, 4, 8 etc.) in skyhooks/time. Assume significant solar system exploration and industrialization. Assume shykooks and full space elevators are possible, strong enough and stable. Assume several orders of energy avail...
[Question] [ Humans already exterminated more than 50 % of wild vertebrates individuals since 1970 [1](https://www.theguardian.com/environment/2014/sep/29/earth-lost-50-wildlife-in-40-years-wwf), [2](https://www.bbc.com/news/science-environment-37775622). I was wondering if it is possible to **wipe out the remaining...
[Question] [ I am working with a fantasy setting wherein a society of feudal humans launches a crusade against a continent largely controlled by elves. Though the human society is not entirely without its own magical resources, the primary source of its military strength is in fielding large numbers of heavily armore...
[Question] [ This is as much a question as it is a thought that I've had. You see, folding mountains (as in made by tectonic plates movement) are very poor in heavy minerals like metals, and they seem to be the ones we most often see dwarves. It is probably because of the Hephaestus myth and the "volcano as a forge" ...
[Question] [ I am looking for a number of slow accumulative poisons say over a 6 month period that is detectable in autopsy and would slowly but surely kill the patient. The poison would be hopefully something a doctor or nurse could obtain as the poisoner will be a medic. Thanks! [Answer] Low levels of cyanide. I...
[Question] [ Say there was a totalitarian regime that controlled 1 billion people. The GDP is ~$50,000 per capita. This regime has nigh on total control over them, however, rebels are still considered a serious threat to their power. If you were the newly appointed head of the Ministry of Safety and your job was to m...
[Question] [ In the 13th century C.E. especially during the mating season, dragons can grow to over 15 meters in length. Twice a year they will flock together and fly across the Pacific ocean to find mates. The problem is during this time many houses will be smashed to pieces by the dragons' dropping as they fly over...
[Question] [ Am writing a story that takes place in a setting set in space where, in terms of weapons, the people in it have pretty much the same kinds of slug thrower weapons as the present day. I want to add a character in this setting who almost exclusively uses a sword to fight. Is this plausible? And, what reaso...
[Question] [ I'm looking to use time travel as a big element in my world. I want there to be a somewhat reasonable explanation for it though, so it doesn't turn into some magical wooble-booglly tech stuff. (credibility is an amazing way to engage a reader) I've been reading A Brief History of Time, by Stephen Hawking...
[Question] [ I'm trying to design a mammal that lives in trees. I'd like its hands to be good for climbing, but not good for using tools. What aspects of the hand would make it good for climbing and not good for tool use? [Answer] Lots of creatures climb, few creatures create and regularly use tools. Fewer still i...
[Question] [ [Xenomorphs](https://en.wikipedia.org/wiki/Alien_(creature_in_Alien_franchise)) are one of the most dangerous, deadly aliens in movie history. They breed in massive numbers, live in an ant-like society, and have blood that doubles as concentrated acid. Most of those aren't a problem to figure out as we ...
[Question] [ I have devised an alien species for a universe I am working on. They originate from the same planet as my high-pressure creatures ([What would happen to a high-pressure creature in a low-pressure atmosphere (50atm)?](https://worldbuilding.stackexchange.com/questions/32159/what-would-happen-to-a-high-pres...
[Question] [ After doing some research to find natural resources in a swamp, I found that a swamp wasn't really able to do anything beyond it being good for fish growth, as a sort of natural water and air filter, and as a place for some iron ore (hematite) deposits as water flows through. Now, naturally there would b...
[Question] [ Right now the Earth rotates around the y-axis so East and West replace one another. What would the affect be on Earth's seasons if it rotated on either other axis? The first is the Z axis, pointing from Earth to the sun so that South and North swap places by going through East and West. The second option...
[Question] [ I've got a group of humans who believe as a central tenet of their religion that humans should be as physically perfect as possible. In pursuit of this goal, they've spent a few hundred years applying an intensive program of genetic engineering and positive eugenics to their population. They've got a few...
[Question] [ The carnivore/omnivore/herbivore army from this [question about herbivores](https://worldbuilding.stackexchange.com/questions/25724/what-good-are-herbivores-in-an-animal-army) has reached the battlefield and the opposing army is a collection of large, scaly, occasionally feathered animals that no one has...
[Question] [ Imagine that we one day invent an ansible, capable of near-instantaneous FTL communication, but we can not transport physical matter any faster than light. Imagine also that we have gotten to the point where space travel is possible, but still massively expensive and obviously slow. We want to colonize o...
[Question] [ Let's assume that civilization is a total loss so after the initial die-off humanity has to rebuild itself from the hunter-gatherer stage. In a particularly harsh environment it may take a few thousand years to stabilize and then progress through the agricultural revolution, early civilization, and into ...
[Question] [ In novels (SF and FF) that hint at being earlier in Earth's history, such as *Lord of the Rings* and *The Wheel of Time*, in which period would such a story need to take place to plausibly and realistically be able to play out into our history? Some examples are *LotR*, *Star Gate*, *Fringe*, *Assassin's...
[Question] [ Imagine a world (or rather a solar system) where in its history there has been a war with emergent AI's There are very strict laws governing the speed and complexity of computer systems However because of the very depleted state of raw materials - (imagine 1000's of years, even after AI emergence) - soci...
[Question] [ Imagine I'm writing a sci fi thriller novel set in the modern day, on a space station orbiting the Moon. The crews are supposed to deliver supplies to a lunar station on the Moon, they board a shuttle docked on the space station and leaves for the lunar surface. To nobody surprise, I will introduce an em...
[Question] [ There is the classic trope of a kidnapping victim posing for a photo with today's newspaper to prove they still live, or a time traveller correctly announcing Solar Flares before they happen to prove they have future knowledge. In both cases, these can be used as "Proof that the individual was alive at X...
[Question] [ I am writing a story that involves the colonization of an exoplanet with very similar properties to Earth. This exoplanet would be orbiting a red dwarf, but due to certain factors (it's atmosphere and the presence of one or several moons) it is NOT tidally locked. Upon arrival from humans, to their surpr...
[Question] [ Partly inspired by [this question](https://worldbuilding.stackexchange.com/questions/147113/could-you-live-in-underground-lava-tubes-on-venus/147135?noredirect=1#comment459860_147135) My Venusians are happy in their cloud top city when a small group somehow (with **lots** of handwaving) crashes to the su...
[Question] [ I was thinking about our history of music, came upon electronic music and started musing about all the possibilities of modulation and such. I then thought back to a previous question of mine, [*"How might a purely mechanical 'voice' function?"*](https://worldbuilding.stackexchange.com/q/136221/59407), a...
[Question] [ You may not realise, but animals no more run by instinct than do humans. Like humans, they too have needs. These needs are served by the Animal Court, lowest of the heavenly courts. Formed from the descendants of twelve virtuous animals (the animals of the Chinese zodiac) the Animal Court convenes twice ...
[Question] [ Two large and powerful space empires are currently engaged in a very tense cold war type stand-off with each other. The Colonists are a republic that is concerned with the safety of their home system. The Outsiders are an empire loosely based on the Roman military and government, who want to expand out o...
[Question] [ I am familar with current reactor (experimental) fusion reactor design. But imagine a fusion reaction happening without a reactor, so there is no reactor hull to shield the sound from an innocent bystander. It is a small reaction and it is continuus and controlled. (so not all reactive matter is consumed...
[Question] [ Let's say that there is a wind going 45 mph and the flight direction of the humanoid creature is in the same direction as the wind. As the flight is in the same direction as the wind, air resistance is minimum, so small it is basically 0. And let's say that this humanoid creature has a wingspan of 5 feet...
[Question] [ The argument for superheroes to capture villains alive is that superheroes are already illegally operating as vigilantes and compensating for muggle law enforcement is all they are morally obligated. The burden of dealing with super villains permanently falls squarely on the justice system, not the the s...
[Question] [ Is it possible, the world being as it is for a city to be isolated completely from the world? Assume technological advancements to be the same as they are today. Would such a scenario be feasible? Can a city be effectively besieged for an indefinite amount of time in such a way that no one can enter or ...
[Question] [ Let's face it: You are *The ultimate God* You created the universe, including its physical laws. You created the stars and alligned them in specific order. You created the solar system where the planets are in order as you wish. You brought life to one (or more) planet(s) in that solar system and did fid...
[Question] [ **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. The ...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/13339/edit). Closed 8 years ago. [Improve this question]...
[Question] [ Say I wanted to create a civilization of people who, in accordance with a vow to never harm plants, refuse to practice agriculture or animal husbandry, instead relying hunting and fishing for all of their needs. Is it conceivable that this society would ever produce a city with tens of thousands of peopl...
[Question] [ One of the main difficulties that have harped militaries from prehistory to the modern day has been identifying who's your friend and who's the foe. Many solutions have been used to solve this conundrum, but with metamaterials promising the ability to, partially, blend into the foreground the issue of id...
[Question] [ This is for a story that I've been kicking around for years at this point and I always get hung up on how realistic one of my story arcs is. I have an elected constable and town selectman that is participating in illegal activities in a small town. The town is currently served primarily by a county sheri...
[Question] [ Earth has its own current population, 7 billions individuals or so. Everything is going great: there are animals, rivers, houses and factories. The world as we know it (without pandemic!). One day people wake up only to find out that something is wrong with Earth. Something related to the physics of the ...
[Question] [ Imagine mankind has established mining facilities on [NEO](https://en.wikipedia.org/wiki/Near-Earth_object)s Some of them send raw ore directly to other processing stations in space, others refine on site. All of them use a system based on cargo 'slugs' that get flung to their destination using rail gu...
[Question] [ Would air pressure be demonstrably greater in a subterranean city at a depth of 1 mile? Lava tubes leading into a dormant magma chamber -- this would have challenging gasses that would need to be ventilated to make it habitable, right? The consensus for the geothermal temperature gradient seems to be abo...
[Question] [ In a sense, humanity has long been capable of transmitting interstellar messages (METI (messages to extraterrestrial civilizations) - attempts to transmit interstellar messages from humanity to probable intelligent beings outside the solar system.) The first strong generalization sent into space was prob...
[Question] [ This is yet another "literal worldbuilding" question, as in, building worlds. Inspired, in part, by [this question](https://worldbuilding.stackexchange.com/q/27396/32642). What if this world is a very long (effectively infinite) hollow cylindrical cavity with the diameter roughly equal to that of the Ear...
[Question] [ In my world there is a metal commonly associated with enhanced magical properties. However as a balancing system I don't want this metal to be combined or forged in any way. The technology level is around Gregorian year 0, but they do have magic available so they could creatively get around minor problem...
[Question] [ The **Dyson Swarm** is common in sci fi as an energy source, and sometimes also as a powerful weapon. As it is commonly understood, it harnesses the energy of the sun, which stores a vast amount of energy. A Dyson Swarm is necessary for any civilization to be deemed Level I or II on the Kardashev Scale. ...
[Question] [ So for a thought experiment I came up with the idea of a species that uses wheels for locomotion, sort of inspired by a species shown in His Dark Materials. Under what circumstances would such a species develop, and what would they look like? And more importantly, how would a creature with wheels work ph...
[Question] [ So I have a planet with multiple species on it. My planet is tidally locked. I know it is generally thought a tidally locked planet couldn't harbor life because of the extreme temperatures, but my argument is that it is theoretically possible if the planet has a thick enough atmosphere, which helps with ...
[Question] [ **The place:** The United States of America. **The time:** Whenever organised crime bosses think that they could have a chance of succeeding, between the English recognition of the US as an independent nation and now. **The goal:** Organised crime figures to openly usurp government in a minimum of one e...
[Question] [ **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. I ha...
[Question] [ **Context** : In a world, very similar to our good old Earth, with late medieval technology, a great kingdom has united a whole continent. Except, that is, for a small country, located southernmost of this middle-sized continent. This nation, being near the equator, faces intense drought all year long. T...
[Question] [ I'm trying to build a world set in the future, but mainly using modern culture and technology. I plan on this world to be explored mainly through illustration, so I need to design how things look. One of the problems I've been having is how to distinguish between members of different militaries. On the o...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/62922/edit). Closed 7 years ago. [Improve this question]...
[Question] [ Hundreds of years ago, the world as we know it came to an end for various reasons. Mass death, mass agricultural failure, a complete breakdown of all economies and transportation networks along with essentially all nations seeking to function as nations. But humanity survived, the descendants of the sur...
[Question] [ Is it possible to create a large space station orbiting the sun around 10 million kilometers away from the sun? It would be a large settlement which houses around 200 people. Energy would not be a problem provided they bring solar panels with them. So is this possible and would 10 million kilometers be t...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/45308/edit). Closed 7 years ago. [Improve this question]...
[Question] [ In this world Humanity was wiped out, all that remains are several small groups of genetically altered human chimeras. These new "humans" have a genetic cast structure similar to that of hive insects where 70% of all children born are infertile females (think worker bees), 20% are fertile males (think dr...
[Question] [ The jackalope is a mythical animal of North American folklore described as a jackrabbit with an antelopes horns. It's a popular mythological creature in hill folk culture and it made me ask a question, why don't animals other than Ungulates commonly have antlers? Why would animals such as rodents, fish a...
[Question] [ ## Scenario America's issues with the Mid East are less pronounced due to a series of events, allowing it to focus on domestic issues. ## The Setting 1982 - Ronald Reagan declares his own intensification of the Drug War : This is met with widespread public approval. The USA DEFEND Act (To Defund, Extradi...
[Question] [ Okay, so the Napoleonic wars are raging. Many men are dying in Waterloo. It appeared as if the Duke of Wellington and his allied army would prevail, but Napoleon rallied his troops at the last possible minute. They held fast and the Duke suffered many casualties before retreating. Obviously this didn't h...
[Question] [ Over the course of Homo-sapiens, we have become larger, because of diet & selection. [Even in the last couple centuries](http://en.wikipedia.org/wiki/Human_height#History_of_human_height). Today, we vary across geography and cultures, too, of course. Now it is thousands of years in the future (your call)...
[Question] [ Suppose a world has huge underground caverns, capable of supporting large agricultural societies (something like described in [Our Hollow Earth](http://www.ourhollowearth.com/Bernard/Chapter7-2.htm)). What technological level, or better yet specific technologies, would the surface need to detect the unde...
[Question] [ This alien spacecraft would be orbiting around earth at 300-400 km, it has a similar size to the ISS, and it has to be undetectable with our current technology. I assume that it would prevent emitting heat, maintain radio silence, absorb radio waves, and have to bend light around it to be invisible to pa...
[Question] [ I've recently read some news about progress in building plasma reactors. The technology is basically that plasma is held by magnet field because otherwise, it would melt everything it touches. It has temperatures of millions of degrees celsius, i.e. hotter than the sun. Now in sci-fi novels they often us...
[Question] [ The world has a kind of magic called chronomancy, essentially time manipulation. It can be done on two scales: local and universal. Due to how the cost of magic works even the most experienced or skilled of human chronomancers have only ever been capable of stopping, accelerating, or reversing time on a ...
[Question] [ I have a person with a superpower to interact with the world as though they were extremely heavy. The power is smart and selective, which allows him to walk normally without crushing the ground, or other undesirable effects. I want him to be able to casually (at a normal walking speed, let's say 5km/h, w...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/185552/edit). Closed 3 years ago. [Improve this question...
[Question] [ I am looking for a good reason to make radio communications on a planetary scale unfeasible or impossible. Short-range use is acceptable, but no transmissions should make it to orbit or over the horizon line. Hints on specific type and features of an atmospheres are welcome, as well as scenarios that inv...
[Question] [ Is it possible for a sun-like star to hold on to about 16 planets? If so, where could the habitable zone be located at? [Answer] **TL;DR:** Yes, you can have those, if you are willing to use a loose definition of "planet". Or you can keep it under/around 10 and meet the [IAU expectations](https://www....
[Question] [ After reading [this question](https://worldbuilding.stackexchange.com/questions/83543) by [Nick M](https://worldbuilding.stackexchange.com/users/39367/nick-m) (now closed) and exchanging some comments with him, I have some ideas related to the scenario. I realized that the comprehensive design covers sev...
[Question] [ My graphic novel involves a large flying city on a Venus-like planet. Yes, I have done my research, and for various reasons it will be an aerostat-hibrid megastructure: a metaphor for the elaborate and expensive man-made islands around Dubai – a status symbol of impractical engineering. **Please notice t...
[Question] [ A hypothetical species is divided into males and females that exhibit pronounced sexual dimorphism. The males are further divided into multiple morphs (e.g. α-male, β-male, γ-male, etc). This polymorphism is extreme enough that a viewer unfamiliar with this species could mistake all these morphs for diff...
[Question] [ I have a creature capable of absorbing all energy to feed itself. So efficient is it at doing this that the creature itself appears utterly black, since it absorbs all visible light. Its eyes are like deep voids. Even a spear thrown will impart kinetic energy, which the creature will use, and the creatur...
[Question] [ I'm in the middle of creating a RPG one-shot for some friends, and I'm thinking of doing an *Aliens* meets *Space Hulk* style "Big-Gribbly Aliens VS Humans" game. Is there an upper limit to the size of a craft with centrifugal style gravity? I've only ever seen them in fiction presented with single floo...
[Question] [ It must be very dark and hot on the surface of Venus, but my humans want to change that and make a Venusian colony. The problem? The extremely thick atmosphere would make it problematic to say the least. There would be a contest between heat and atmospheric pressure to see who can do the colonists in fir...
[Question] [ This question is going to take some set-up to understand the world it is operating in. This is a modern-day magic world that I've been building up. Magic exists, is hidden, and is quite powerful. **Concepts** Physics still works normally...magic just has the ability to supplant the normal rules for a whi...
[Question] [ I'm finally actually participating in the weekly topic challenges, instead of just helping run them. Let's say that there's a siege around a small series of fortifications that comprise the only defense of a small band of rebel soldiers (the technology level is about that of Europe circa 1100). The surro...
[Question] [ I recently wrote a silly little flash fiction piece in which some party-goers go hide in a bunker under an apartment building in NYC because of a "megablizzard." In said silly flash fiction, I buried the Empire State Building up to its roof in snow in about two weeks. (In my imagination most of the North...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/251415/edit). Closed last month. [Improve this question]...
[Question] [ I am starting to work on an alternate-timeline story on Earth. Is there a web site or software that will let me see just the mountains, rivers, etc. without national or local borders, or cities and towns? Thanks! [Answer] ## What you're looking for is a "topography" map [Topographic studies are the st...
[Question] [ Exactly what it says on the tin: what would an above-ground residential apartment designed to negate the effects of a one-kiloton nuclear surface burst at 500 meters look like? [NUKEMAP-2](https://nuclearsecrecy.com/nukemap/#) says that the effects of a 1-kiloton surface burst at 500 meters are: * an ove...
[Question] [ An alien ship that has been observing earth, and humans in particular, for the past year has sustained catastrophic damage and crash lands on earth. While the alien ship has a crew of about 20 specialists, the damage was significant enough that all are injured, with injuries ranging from minor to life-th...
[Question] [ Is there a possible scenario in which once a year a celestial body can be seen from the surface of the Earth-like planet for a short period of time? * With it being big enough for early civilization to consider it a second moon but much smaller than the actual one. * And occurring each year for one thous...
[Question] [ The question is fairly simple. If a Mongol and a Centaur ride by and shoot at you, who has the better chance of giving an arrow a new home in your gizzard? That is, given equal skill in shooting, does a centaur have an advantage in mounted archery/shooting? Are they in a more stable position to shoot fro...
[Question] [ ## The Question What would be an efficient and relatively low-cost solution for **collecting and recycling** of space junk? The most important criterion of effectiveness is the ability to remove even small pieces of junk from the orbit and then put them to good use. Small is on the scale of millimetres. ...
[Question] [ From pictures I've seen, all rocky planets in our solar system are some shade of grey, brown, and red. Ignoring stuff like atmosphere and oceans and plant life of course. I was thinking of a world that had a stark white moon. But could such a thing exist? The only 'white' moon I know of is Triton, and th...
[Question] [ This is one of a series of questions also discussing [mosquito prevention](https://worldbuilding.stackexchange.com/questions/68789/mosquito-protection-for-an-ancient-rainforest-civilization) and [city building](https://worldbuilding.stackexchange.com/questions/73497/can-a-city-in-a-flood-plain-be-maintai...
[Question] [ Assume that you've conquered the issue of flotation, probably using some very-much-lighter-than-air gas bladder, allowing your ships to take to the skies. Assume also that you've invented a way to maneuver effectively in the air using only the wind and sails. The sail (or hull) design isn't necessarily i...
[Question] [ If people time-travelled back to when Earth had a lot more oxygen in the atmosphere (35% instead of today's 21%) what would be the effect when they started shooting? Mainly small arms. Would spent shell casings be setting things on fire all over the place? [Answer] This article somewhat addresses thi...
[Question] [ For this question, I'm using the magic system discussed [here](https://worldbuilding.stackexchange.com/questions/39715/limitations-of-magic-as-an-energy-conversion-process) that I will sum up with this: you take energy from your environment (e.g. heat from the atmosphere) and transform it into another fo...
[Question] [ Earth, far future: We built multi generation ship which can get 20 000 people to another solar system in next 20 generations (600 years) For scope of this question assume that ship itself is well built and it will indeed be able to carry people and material to its destination and technology wise, the mis...
[Question] [ This is a test drive of the [alien-geometry](/questions/tagged/alien-geometry "show questions tagged 'alien-geometry'"). I hope it will be a fun tag. Okay, for the purposes of this question, the world is flat (like, you still have plants and hills and stuff, just no long term curvature.) We don't care ho...