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[Question] [ Now, bear with me because I know very little of mycology. I just know that mushrooms taste good, and that fungi is very complex with lots of different uses. --- For my fantasy story, I want a society that knows the ins and outs of mycology. They grow food from mushrooms, make their medicines, from the th...
[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. A la...
[Question] [ Using early 21st century technology how do I design a katana that can only be wielded by its owner and also to execute a special attack? In my story the surviving samurai still practice bushido (code of conduct) and they will be trained on how to swing the special katana. This katana is customised accord...
[Question] [ My world has a very peculiar low forbidding people from ciphering information. The penalty for such a thing is very very high. In this world everything should be seen and understood by anyone. It's a world of total openness. It's different from [this question](https://worldbuilding.stackexchange.com/ques...
[Question] [ This question deals with the magic explained in [this question](https://worldbuilding.stackexchange.com/questions/13393/magic-that-alters-living-cells-growing-cities-out-of-trees). It is also explained below. > > In my fantasy novel, magic is a natural part of the world. It is not some mystical force sh...
[Question] [ "Magic" is not declared as such, but there is an energy that comes from every object, and even some things that are not physical, like a gust of wind. Some call it the entity's spirit, or even its soul. Mages can feel them, but they can't be seen. Mages are people who can connect their own energy, their ...
[Question] [ Closed. This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- 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...
[Question] [ I wanted to ask about the system described in the following scenario... A villain has built a system consisting of a telescope connected to a computer that runs some autonomous object recognition software. The villain's goal is to catalog all man-made satellites circling the earth, so that he can attack ...
[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 9 years ago. [Improve this questio...
[Question] [ I'm working on a hard-sci-fi story where a scientist discovers microorganisms in our solar system with disastrous results. I was thinking about how any cross-contamination with an alien ecosystem would cause the organism to self-destruct in a similar manner to matter, anti-matter annihilation. I'm more i...
[Question] [ I have a planet that has no natural water bodies or sources. Is it feasible (assuming technology along the lines of the Earth Engines from "The Wandering Earth") to take asteroids from a belt/field and deliver water to this planet? Probably enough water to sustain a human population of 1 billion + agricu...
[Question] [ As title. What geographic features could cause a stable pocket of unmoving air? I'm envisioning some kind of shrine, sacred place, or untouched grotto, which due to terrain features or certain aspects of the environment, has a naturally occurring, local weather system. In this system, there is to be a lo...
[Question] [ We can know what genes affect what outcomes by following the trail backwards, but can we predictively know what changes to what genes would result in completely different and previously unseen outcomes? For instance, we may know what gene causes blue eyes by having found it through testing, but do we kno...
[Question] [ I want to create a planet that has the longest possible length of time that the tide is low to allow land animals to forage in the exposed shoreline ecosystems. What arrangement of star, planet and moon sizes and distances or other factors would allow a habitable earth-like planet to have the longest per...
[Question] [ I'm trying to figure out the optimal sea depth on an artificial world (a Banks Orbital as it happens, though I think this would also be an important parameter for many other kinds of megastructure). Generally speaking, I think the oceans would not be kilometers deep as they are on Earth, as this would be...
[Question] [ Closed. This question needs to be more [focused](/help/closed-questions). It is not currently accepting answers. --- Want to improve this question? Update the question so it focuses on one problem only by [editing this post](/posts/225448/edit). Closed 1 year ago. The community reviewed wheth...
[Question] [ I'm working on a plot where nanites are used to increase muscle size and/or density directly and was wondering what scientific processes would be involved for nanites to do this. From what I understand on the science of working out, when we work out we induce microtears which grow muscles. *How would nan...
[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 th...
[Question] [ Quite simply, given considerations like radiation protection, locations of scientific interest, local resources for building construction, water, propellant production, mining, etc, what would be the best place on Mars for establishing a base? I am running under the hypothetical situation in which SpaceX...
[Question] [ Ok, so I'm willing to bet at least one person has looked at the title of this question and thought to themselves "What?", so I'll try and explain this as thoroughly as I can. Most incarnations of Pyrokinesis I've seen in fiction often deal with either telekinetically starting fires by exciting the flamma...
[Question] [ In a space-faring, war-torn world with mostly-realistic technology, the engineers have been developing laser weaponry and defenses. All sides of the war have roughly equal technology. This question [How to protect your ship against TW-range lasers?](https://worldbuilding.stackexchange.com/questions/1...
[Question] [ In a [previous question,](https://worldbuilding.stackexchange.com/questions/195474/how-can-my-town-be-public-knowledge-while-still-keeping-outsiders-out) I brought up the concept of sanctuary towns, towns populated entirely by people who know about the population of immortal (as in they can't get old or ...
[Question] [ I was working on a story project some years ago which featured a highly alternate near future in which, among other things, a 3-way cold war had spread across the solar system. There were many other F&SF aspects mostly irrelevant to this question, so I'm not (necessarily) asking for why space travel deve...
[Question] [ ## Premise The surface of my world cannot support life. The inhabitants of my world sustain themselves off troglophauna and aquifers. I'm leaving the mechanics of where energy comes from in this shadow-ecosystem out of scope (we can just assume it's geo-thermal or other source). I also have a evolutionar...
[Question] [ In the process of developing an ocean world setting for my fiction, I have often pondered whether to give the sapient species of the world access to some form of wood or other resource from underwater trees. I would like to know you thoughts on how plausible underwater trees would be on an earth-like oce...
[Question] [ I've been toying with the idea of a world that was once hyper-technological, where body modification and nanotech-based body modifications were the norm such that society practically couldn't function without these various enhancements (similar to current society with smartphones). Only, something caus...
[Question] [ Don't you just hate when Euron injures your pet dragons and perforates your fleet with a ballista? Don't worry, all you need is a shipful of Wildfire and a very long fuse (or Mehdi Sadaghdar with electric equipment) onboard. Lay back, play some music and watch the [ensuing light show](https://www.youtube...
[Question] [ I am developing the global context about my game and I realize that I only developed one nation. I want to show the planet as a unit to counter against the divine side (there is a kind of strange plant God). But the question arose if it is possible that something like this existed, as humans we always ...
[Question] [ Bringing a human child to term generally takes place over a period of nine months. They are marked by different stages, from 1st to third, and are marked by different events and expectations for mother and child. While no two instances are the same, this process is generally similar enough to be predicta...
[Question] [ 2019 sucks. I'm going back to the Renaissance -- specifically, Florence Italy in the year 1503. I've never been that great a planner, but I should think ahead at least a little. How do I earn a living in 1503 Florence? Better yet, how do I become rich? I speak both Latin and modern Italian, so I figu...
[Question] [ I have seen in this site that there has been constant attempts to make a working Plasma Gun, only to be constantly met up with failure, as shown with my post regarding Warhammer's Plasma Cannons. However, one redditor came up with another suggestion, saying that it would be better if the plasma came ...
[Question] [ This question already has answers here: [What species of animal could take over earth if humans went extinct?](/questions/99818/what-species-of-animal-could-take-over-earth-if-humans-went-extinct) (13 answers) Closed 4 years ago. I'm considering creating a world which take place on earth after...
[Question] [ I need help in figuring out how to form an air force in the roman empire. In my story a time traveller goes back in time to ancient rome and becomes emperor and begins his attempt at modernizing the legions. I would prefer if no magic was involved, other than that all ideas are accepted. [Answer] The ...
[Question] [ Assuming a turtle or tortoise evolved adaptations to become large comparable to that of sauropods. How large could they become (in weight or potentially carapace size)? The turtle needs to be primarily terrestrial. Adaptations: * Hollow, honeycombed bones (including shell) * More efficient lungs like tha...
[Question] [ In my fantasy world I have a humanoid species that can work pretty much non-stop. Assuming he has enough energy, can one of these creatures do most of the necessary things on a 25 meter long cog to sail it successfully? There would usually be about 4 other people on board who are competent at sailing, so...
[Question] [ I write sci-fi, and I don't love fudging important things. I have a character that was a victim of genetic experiments (I know how original). I want to find a semi-reasonable way to explain this.(not just the experiments but also the powers she got from them) her developing pyrokinesis as a result of the...
[Question] [ The humanoids I'm talking about are designed with all the characteristics pertaining to robots developed with the help of soft robotics technologies. Although the skeleton is made of titanium, their "muscles" are produced from soft multi-material actuators. There's a network of nanosensors forming a subs...
[Question] [ It’s 2019 in an alternate steampunk/dieselpunk universe. Population growth, dwindling resources, and the evil overlords have everyone cramped into big cities, toiling away in the hope of something better. For now though, it’s enough to just complain about the weather. Smogs are a frequent occurrence, you...
[Question] [ Dwarfs are intelligent creatures, with stronger bones and muscles but smaller than humans. They live mostly under ground (caves, mines, etc.) and reproduce sexually. How long the gestation period would be for a female dwarf? Dwarfs were hunted by creatures that fed mainly on them and had to adapt to over...
[Question] [ I want to know if the disease I invented is logical or just a total fiction. A parasite (parasitic fungus) lives within the human brain. It infects other humans by releasing spores while invoking states of rage within their hosts. This makes it easier to infect other humans as it's similar to a "zombie"...
[Question] [ In my story, humans have colonized both a high-G and a low-G world in the same star system. How would surface vehicles have to be designed differently for practicality and economy on each of those worlds? World A (Yanacocha) is a large [carbon planet](https://en.wikipedia.org/wiki/Carbon_planet) with sur...
[Question] [ ## Background In a far flung land, there exists the country of Coldesia. It is large, around the size of the US state of [Alaska](https://en.wikipedia.org/wiki/Alaska). Most of the country is covered with either barren mountain ranges or large forests. The weather is frequently cold (*as the name might...
[Question] [ In my world, an engine very similar to the [SABRE engine](https://en.wikipedia.org/wiki/SABRE_(rocket_engine)) has been made. Along with it is the development of [WEAV propulsion systems](https://www.scientificamerican.com/article/worlds-first-flying-saucer/). The SABRE engine is a hybrid between a hype...
[Question] [ I am creating a species for my alien world that will be seen as 'holy' by the planets dominant religion. I'd like to know if my 'holy' species could viably exist biologically/evolutionarily. Assume that the alien planet has the same general physical properties as ours, the only difference being a higher...
[Question] [ The original dream of the alchemists was to turn base metals into gold, however it's quite obvious that after that becomes cheap and easy it becomes basically useless since much of gold's value comes from its rarity. But suppose the alchemists had achieved the ability to convert between different metals ...
[Question] [ *Summary:* Questioner wants to know the best way to restrain a person in order to prevent self-harm, while minimizing discomfort, facilitating their cleanliness and ongoing education, allowing entertainment and providing opportunities for copulation while protecting their partner from unexpected viol...
[Question] [ The setup; We have discovered the ability to make super-men... well not quite, but we can do super-er men. They are...actually not that super, basically just bigger and a little more monstrous. And hey, we have some nasty mean alien things invading the planet from some strange dimension, a perfect reaso...
[Question] [ I'm interested about whether or not and how gravity would be affected on deformed planets. You could think of this as whether or not mega-asteroids would be able to sustain life? If so, would different parts of the world contribute to different ecosystems due to the shape of the planet, or would life evo...
[Question] [ I'm about halfway through a novel about a very advanced alien civilization that is systematically wiping out other species using engineered viruses. I am hoping to have the protagonists test samples in order to prove that the viruses have been designed, and then confront the designers, but that's where ...
[Question] [ Could a continent roughly the size of Europe, Africa and North-America combined be formed almost entirely due to volcanic action? [![enter image description here](https://i.stack.imgur.com/wMmPN.jpg)](https://i.stack.imgur.com/wMmPN.jpg) Something with a similar formation to this. From a chain of volcan...
[Question] [ *I wonder if a political system without a permanent government is feasible.* I am thinking about a combination of a [direct democracy](https://www.wikiwand.com/en/Direct_democracy) with a project-based administration. The citizens are long-lived (200-250 years) but not immortal. The society is isola...
[Question] [ If you live in a town of wooden buildings, [fire can be a big problem](https://en.wikipedia.org/wiki/Great_Fire_of_London). If you have the luxury of being able to plan the layout of a city, how do you plan the city to avoid major fires? Notes: * Low-tech doesn't mean low-knowledge. For example, they...
[Question] [ How it begun: In my world, the surface has become inhospitable due to the ozone layer depleting and excessive levels of air pollution. Life migrated to a giant cave (roughly the size of north America) constituted of many "zones" of varying size connected by tunnels. Most of the zones have access to l...
[Question] [ First of all, this website is a dream come true. I'm a total sucker for this stuff. Secondly, I love astronomy and worldbuilding, and lately, I've been thinking of a hypothetical situation, and was wondering if such a thing was actually possible. A planet orbits a gas giant. Let's say (for reference's sa...
[Question] [ As has been shown many times, once a species "escapes" into an environment, there's no reeling it in. So choosing the right species to terraform Mars is incredibly important. How would we choose the mix of class/order/family? Do we chose just one of each class/order/family? Which bacteria do we chose...
[Question] [ Acording to current scientific knowledge, birds descend from theropod dinosaurs. This evolution had, as usual, some transitional forms, like [Archaeopteryx](https://en.wikipedia.org/wiki/Archaeopteryx). Following this evolutionary path, we notice that the birds lost their teeth in favor of a beak. But, f...
[Question] [ A man with a past traumatic experience developed dissociates amnesia. Every time he experiences something traumatic, his id persona hiding in his unconscious mind comes out taking over his body. This persona causes the man to transform into a powerful and unrecognizable being. His hair, eyes and his clot...
[Question] [ Could anyone could survive a nuclear war and all that follows? I have read many things saying they would, and read other science-based answers, but they all talked about a nuclear war that was relatively small (100 nukes fired between India and Pakistan). Would anyone survive a nuclear war of NATO vs. C...
[Question] [ Someone invents a portable, incredibly high-powered laser or similar energy weapon. The mechanism of energy production can be hand-waved away. In other words, it will heat up. Lots. Gigawatts lots, or terawatts/petawatts/etc. Handwave any production rate you like into this. *Using only substances that ex...
[Question] [ Closed. This question needs [details or clarity](/help/closed-questions). It is not currently accepting answers. --- Want to improve this question? Add details and clarify the problem by [editing this post](/posts/62439/edit). Closed 7 years ago. [Improve this question](/posts/62439/edit) Pe...
[Question] [ In a story a long time ago in an age long forgotten, the main characters find an ancient portal-gate-system, powered by an even more forgotten magic. The main characters have access to soldiers, within a reasonable limit, within a fantasy / medieval setting. How would our characters proceed with the expl...
[Question] [ In an alternate universe on an alternate earth, we have a nation, or a culture, who with the advent of modern communication technologies has an insatiable thirst for information, be it current events, sports, politics, and whatever else. **Most humans have been implanted with devices to facilitate a...
[Question] [ I'm working on a story that deals with an inordinate leap into the future and was wondering what leaps and bounds in science the human race may have reached by then. So here's what I'm wondering: Over time, we have been able to access information in more and more areas. For example, we're dealing with c...
[Question] [ We all know how fiction likes to play fast and loose with nanomachines. But really, what would they be capable of in real life, assuming you had an utterly arbitrary amount of them? What would the timescale be? Would you ever be able to shapeshift or use nanomachine-based superpowers, or is that all stri...
[Question] [ Assume that this earth is celestially equivalent to ours: e.g. same solar system, same position, same orbit, etc. Would the sunset look similar to ours on a floating-island earth? The earth itself is essentially masses of land orbiting in stasis around a fixed "center". Each is spherically shaped and lar...
[Question] [ In [this](https://worldbuilding.stackexchange.com/questions/31915/temperatures-on-a-planet-with-long-days) question I asked about temperatures on a planet where a day last 30 days. The data are the same: * stellar flux of 1.118 * albedo between Earth's and Mars's * atmospheric composition of 18% oxygen, ...
[Question] [ So I have a creature that I think is a bit out there and likely impossible, but it's too good of an idea and I don't want to scrap it. ## Basic design I don't really have a distinct shape that I want for it right now, so for the sake of argument, let's just say it looks more or less [like the deathclaws ...
[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/30353/edit). Closed 8 years ago. [Improve this question]...
[Question] [ Several hundred years in the future, technology has significantly advanced to the point where we can far more efficiently extract energy out of the natural world we live in. As a result, energy has become far cheaper, and completely renewable, significantly boosting the economy and sparking innovation. Q...
[Question] [ In Back to the Future III, there is a scene where the professor has built an ice cube maker with 'wild west' technology. I'm not actually sure if that's possible, but given a solid understanding of Boyle's law and compression stages, it's something that feels like it should be possible. On a parallel li...
[Question] [ After receiving great answers on my [previous question](https://worldbuilding.stackexchange.com/questions/16713/how-long-could-the-survivors-of-a-nuclear-war-maintain-a-civilized-way-of-life), I've thought hard, how to create a story, in which there is a large-enough group of people (at least 100 highly ...
[Question] [ Taking genetic manipulation of humans to change them to live in other environments, besides maybe gills what other physical changes would need to be done for a human to spend 95+% time living in the ocean? I also suspect gills would only be partially useful, allowing longer submersion's but still require...
[Question] [ Many of the intelligent species on Earth, including us humans, are predatory. One of the reasons for this is the nutrient content of meat; a pound of meat is very calorie and nutrient rich especially compared to a pound of plant material. One of the reasons humans have been able to be so crafty is from ...
[Question] [ Following my previous question, > > [A King can't go to war](https://worldbuilding.stackexchange.com/questions/18794/a-king-cant-go-to-war) > > > I decided that a power that could oppose a King was facilitated by having a religious component. The idea is to have one of the main land-owner, the local ...
[Question] [ As a more detailed follow up question to my earlier one ( [Which types of firearms would be damaged or broken by a global change in combustion intensity?](https://worldbuilding.stackexchange.com/questions/9232/which-types-of-firearms-would-be-damaged-or-broken-by-a-global-change-in-combust) ) There is n...
[Question] [ The basis of known life on Earth is water, clear and simple. But what about forms of life on other worlds? Not every world in the universe is as hospitable as the Earth. Suppose a planet had an average temperature slightly higher than the melting point of iron: 2,800° Fahrenheit (1,538° Celsius). On this...
[Question] [ There is a TLDR section below for those who don't want to read the dialogue „So, what is magic?“, young Fineos asked. „Well“, said Rhabea, trying to buy herself some time. „Magic is a lot of things.“ – „Yes, I know, but how does it work?“ – „It works in a lot of very different ways. There is not just o...
[Question] [ Communicating using the sun: Frontinus, while studying the Greek classics, invented a system of communication based on towers, mirrors, and shutting aparatuses that could communicate along Roman empire by means of light rays (day only). Using something similar to a morse code, operators positioned in...
[Question] [ I remember seeing a show on the Science or Discovery channel about a certain type of star, maybe a [magnetar](http://en.wikipedia.org/wiki/Magnetar), with a powerful magnetic field that would twist and wind over time. Eventually, the field would "snap", returning to a stable state and unleashing a wave o...
[Question] [ This is a re-phrasing of the question "How Would Metabolism Work For A Zombie?". It's the year 2026 and a new engineered virus turns people into zombies who are very stupid and can only shamble slowly, due to severe brain damage. Also, they get a newfound craving for the flesh of the uninfected. Yay! Mos...
[Question] [ The zoology of my setting takes place on a mostly dry planet - it's certainly got rainfall, seas, and wetlands in certain ecoregions, and life exists there mostly, but some things still live in more desert-ified territory. After a major extinction event life has gone backwards a few times and ended up ev...
[Question] [ This is a submission for the [Anatomically Correct Series](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series/2798#2798). [![Azure Dragon from the Qing Dynasty.](https://i.stack.imgur.com/Ndnc7.png)](https://i.stack.imgur.com/Ndnc7.png) In the culture of China and oth...
[Question] [ I'm thinking about the evolution of flight on a tidally locked planet where winds normally are 70 km/h (45 km/h) and can easily reach 120 km/h (75 mph). I've recently asked about [clothes humans wear in this environment](https://worldbuilding.stackexchange.com/questions/230121/clothing-against-the-wi...
[Question] [ The werewolves in my setting have a problem. Letting humanity at large know that either they or any other sort of magical creature actually exists is illegal, and so they have to pretend to be human. For the most part, this is pretty easy for them to manage. They can control their transformations basical...
[Question] [ In a world I'm building, one of the most common creatures is the Limus genus. There are two species in this genus, the Limus silva and the Limus informis. The first is a standard slime that dwells in forests, swamps, and caves. The second is the mimic, a being that can change its color, shape, and ...
[Question] [ After 1000 years of dwelling in apocalyptic shelters, some brave souls have begun exploring the surface. (This is how [Rhydars](https://worldbuilding.stackexchange.com/questions/216870/explaining-an-echolocating-rhino) were discovered and documented, by the way.) Among the first things these 'Vanguard' f...
[Question] [ First, I shall explain the situation. I have a species of humanoids, Astriads, who are already quite stronger on average than humans are. However, this difference isn't great enough to cause problems when it comes to weapon design. Now the problem comes with the internal magic. Using the internal mag...
[Question] [ Let's say that someone throws an [M67 hand grenade](https://en.wikipedia.org/wiki/M67_grenade) into a completely enclosed room - i.e. the door is the only entrance/exit. How would someone build a suit of armor to functionally negate the following factors? * thermal effects of the grenade blast * the [alv...
[Question] [ I want my continent to be at least 90% desert. It has a square shape with several peninsulas. Kinda like Australia, but more than 3 times bigger and it's not flat(well it does have flat areas, but not to the extent like Australia). It's area is equal to that of North America, or 25,000,000 km2. My contin...
[Question] [ Humans have 2 eyes, under a brow ridge. This ridge seems to have the purpose of protecting the eyes from sunlight. If a human-faced creature had a third eye, where could it be, while being able to link with the other eyes and being protected from sunlight? [Answer] ## It probably wouldn't be linked wi...
[Question] [ Just a weird question that popped in my head, but since the only real space station in existence always keeps itself squeaky clean, I wonder how one that doesn't have cleanliness as high priority would look? In everyday life, the dirty and gritty look we are used to are influenced, if not created, by gra...
[Question] [ I have always loved the fursuit uniform of the Aztec [Ocelotl warrior](https://en.wikipedia.org/wiki/Jaguar_warrior): [![ocelotl](https://i.stack.imgur.com/wZpM0.jpg)](https://i.stack.imgur.com/wZpM0.jpg) But, to my great disappointment, it turns out that in reality the suit was not made out of an actual...
[Question] [ Recently I've been picking back up my worldbuilding for a DND campaign I've been lightly working on for a few years. One of the ideas I have are bovine dwarves, mostly based off of yaks or muskoxen. Mostly because... Y'know, long hair, lives in mountainous climates, and because I have a trend in basing m...
[Question] [ OK, faster than light isn't possible & a merely significant fraction of it can begin to stretch the bounds of reasonable reality as that fraction increases // so a less unreal way to allow us our interstellar travel is needed. I'm opting for Cryo-Sleep. So that's pods that lower body temperature until yo...
[Question] [ [![enter image description here](https://i.stack.imgur.com/k0FNj.jpg)](https://i.stack.imgur.com/k0FNj.jpg) In my world there exists a sort of "chameleon" like cloak that has the ability to change its color to blend in with its surroundings, the fabric is thus highly sought after for its camouflage capab...
[Question] [ In my worldbuilding project, I'm currently thinking about the society of my bird people. I like to put actual science (or "science") into my worldbuilding, and I'm trying to include as much real-life bird biology and sociology as it makes sense to do in an advanced society, but I can't find any good info...
[Question] [ I'm trying to work on an elemental scheme for the world that I'm building. I want to start with primary elements and then combine them to create "secondary" elements. The cycle is: Fire < Water < Earth < Wind < Fire Then you could combine a dominant element to its strength in order to create an element a...
[Question] [ This is my first post on this site. I have done some searching here and elsewhere and was unable to find an answer, so here goes: I'm working on a story that exists both in real-world Earth and a separate dimension, and time elapses at a different rate in the otherworld. I'm building a timeline for both ...
[Question] [ Is it plausible to build and maintain a space program without adding to climate change? While obviously there are larger problems in the near term with respect to climate change, I'm thinking about a slightly longer term context with something like [solarpunk](https://solarpunkanarchists.com/2016/05/27/w...
[Question] [ I've read that Roman catapult were made out of iron and I was wondering if it was possible to replace that iron with bronze instead. In a world where bronze is readily available, copper and tin..etc are abundant while iron/steel aren't. [Answer] ## Yes, and they did Not only is it possible, but many R...

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