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I've been wanting to make an alien planet for a while, and though I don't want it to just be an 'earth but everything is wacky colored' type thing, I honestly do not have the patience to simulate millions of years of evolution. yes, this planet will have special circumstances that the animals will 'evolv... |
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The world is at danger because the death of one singular entity called heart of the world is dying.
[](https://i.stack.imgur.com/BTHml.jpg)
Copyright 2014-2020 [PeteMohrbacher](https://www.deviantart.com/petemohrbacher)
The question is how ... |
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Life points are creatures spawning in random places around the world, they grow to the size of an apple and resemble hearts made of crystal of various colours.
[](https://i.stack.imgur.com/0kkaL.jpg)
They get their names from the ability... |
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A thought occurred to me, and I wondered if it could be made practical...
This [video](https://www.youtube.com/watch?v=VNvzZfsC13o) talks about the possibility of electrical battery powered planes, and in short, while it may be practical to build *small* aircraft using battery power, unless batteries get... |
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Although I'm aware of the real life existence of [aerosports](https://www.youtube.com/watch?v=esZHktPU27k) involving planes, exactly how nimble can I expect my [planes](https://en.wikipedia.org/wiki/Mitsubishi_A6M_Zero), of a similar size, to be. If I were to design or have a racing course for said vehic... |
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Given the perfect environment, denser atmosphere, oxygen rich, maybe lower gravity, how large can a flying insect get and still be able to walk upside down on a surface?
This question starts to tackle it but doesn't give a definitive answer plus the OP states a particular weight which may be too heavy, [... |
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I'm looking for a bullet that makes **the target** explode. A bullet filled with explosives and explodes on impact does not suffice. It has to make **the target** explode somehow.
Currently, my only idea is a bullet that meets such a requirement is a heat bullet: when shot at a target with water (organic... |
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I'm fairly certain such a creature is impossible, but I was curious to see if anyone could come up with an explanation for such a creature. How would a two-headed giant evolve/function if it was a real creature?
[](https://i.stack.imgur.... |
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I'm thinking about making a dark (and I mean darker than Grimm dark) short adaptation of Cinderella. The gist of it is that, after a life of manual labor and emotional and verbal abuse at the hands of her stepfamily, Cinderella is extremely bitter and arguably evil.
I want to portray Cinderella as I woul... |
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Deep within each sperm cell is a fully formed, miniaturized individual called a homunculus. These microscopic "little men" simply need time to gestate until they grow large enough to be born. This is the basis of preformationism, which has risen to prominence in the 19th century.
Using alchemical science... |
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Inspired by One Piece by Eichiro Oda.
from <https://onepiece.fandom.com/wiki/Nikyu_Nikyu_no_Mi>
[](https://i.stack.imgur.com/6LbV8.jpg)
Fiction has many examples of humanoid animals - things like lycans or werewolves, cat/dog/rabbit folk... |
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Hal Clement's novel *[Needle](https://en.wikipedia.org/wiki/Needle_(novel))* was revolutionary in featuring a non-parasitic alien lifeform capable of inhabiting a human body.
Specifically, the Hunter in its independent form is a gelatinous mass capable of amoeboid swimming and slow crawling like a slime ... |
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I am having some trouble reasoning out some ideas, if any of you could help.
So I have in mind a planet, where there are many human cultures, but one of them is more advanced then others. So they have very advanced technology, like AI, holograms, vehicles, genetic modifications. Others are more like far... |
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A person is born with a certain amount of mana, which increases with age and peaks at a certain point. Individuals are born with all the mana they will ever have, but it can be refined with practice and training. This will determine how well it can be controlled and used to perform spells.
However, ther... |
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Basically what's in the title: If someone uses a spiky arm guard/bracer (long bracelet type armor not gauntlet) while bashing/battering an opponent (with or without armor) would this result in the wielder breaking their arm or bone or could they do it without harm to themself?
The spiky arm guard/bracer ... |
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Some astronauts have just arrived in Mars orbit! They're fixing to set up a small refueling station/outpost on Deimos. One problem, how might they keep their small habitat and associated structures from simply floating away at the slightest jolt in Deimos's low (only 0.003 m/s2) gravity?
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**Do... |
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In the world of [this question](https://worldbuilding.stackexchange.com/questions/124218/what-would-cause-termites-to-be-the-dominant-herbivores-on-a-savanna), ants and especially termites are the dominant herbivores by mass. There are no large grazing mammals competing with the bugs for the siliceous gr... |
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In my book series (link [here](http://sites.google.com/site/weaselworldofficialsite)), there is a blob creature (lime-green in color, has a radioactive glow, is sentient, has a bizarre and uncanny intelligence level (has the emotional intelligence and "street smarts" of the average 6-year-old but is capa... |
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Inspired by a brief comment converstaion [found here](https://worldbuilding.stackexchange.com/questions/118279/how-to-explain-why-humans-weren-t-encountered-by-alien-species/118364#118364).
I would like to investigate the design and development of an alien species whose technological development did not ... |
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I'm creating a developed country in South America with its development similar to that of Canada or Australia (little behind the US). See the map below - the white line surrounds fertile and populated areas.
[](https://i.stack.imgur.com/... |
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* In my world, there would be a tropical region very similar to real life rain forests, though underground there's still jungle. At a point underground, there are huge caverns that are populated by various tropical plants, trees, fungi, algae, along with other types flora and various fauna as well.
* I'm... |
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**The Background**
On a single fairly sizeable continent live two intelligent species. Regular humans, and a species of intelligent wolf-people.
The latter aren't actually descended from wolves, but a wolf-like social plains carnivore. Think carnivorous wolf-baboons. They're every bit as intelligent as h... |
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Premise: bio-tech golden age where "wetware" is the new IT meta, organic AI that can interface with our standard computing technology.
In this context, I'm imagining a future technology that would regulate data flow between the brain and external binary data.
Hyphal sheaths are a key element of mycorrh... |
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So in my world I've got a mostly human like species but they've evolved to camouflage, specifically colour change. The world is an earth-like medieval fantasy. The different parts that appear to change are:
Hair: They can change the colour of their hair (including body hair) at will, takes a couple of se... |
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My winged people just have feathers on their wings, and maybe small feathers on their back between their wings (from shoulder blades to mid back). Their bodies look generally human.
Here is a link to an image I am basing their structure off of:
<https://blue-hearts.deviantart.com/art/SB-New-Bones-57755... |
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Let's imagine a supernatural creature that can walk off all damage unless their heart is hit. (think Mr Sinister. The damage is done, it's just not lethal) These creatures exist in modern times, have similar anatomy to us, and any damage to their heart is as lethal as it is to us.
Modern armor is heavy, ... |
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The vampires I have in mind are a sub-species of humans: they share a similar immune system with us, however they evolved fangs and are capable of injecting some kind of substance into their victims, usually a human being.
This chemical not only prevents the blood from clogging, it can also paralyze the... |
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I'm in the midst of writing a space opera, and there are several characters that are sentient androids and I need some help with their physiology. I have them set up with small fusion cores for power, quantum computing brains, and nanite self repair. They obviously have no need to breathe and only have l... |
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So let's say I have a super cooling "battery" basically a brick that cools anything that touches one end of it to ~0k. Now, using handwavium I can thermally isolate it so that it doesn't just cool everything infinitely. What I want to know is:
given this "cooling battery" what is the best way to create ... |
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I have a world that consists of hundreds of different caverns inside an earth-sized planet. Each of these many caverns consists of many different biomes, such as plains, Jungles,deserts,etc.
However since the plants and trees in these caverns are photosynthetic, I created a carnivorous light producing pl... |
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I want to develop an intelligent species that communicates almost exclusively through touch. Their entire epidermis serves as a conductor like an electrode, so that when they touch they share thoughts. When they are too distant to touch, they can use sound vibrations to send simple messages, (such as "da... |
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In a world that will tolerate necromancy but will not tolerate the theft of bodies or the killing of others, it is possible to create zombie servants, if a necromancer can find a subject lawfully, and I am assuming this is a rare or uncommon occurrence. What would be the best way to preserve the zombie f... |
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The Inflatable Hedgehog or Zamba Zaraa is a creature, reported from the Gobi Desert of Mongolia.
It is described as looking something like a hedgehog.
When threatened, the animal strikes its tail against the ground (an alarm action that is used by many different types of animal) and then proceeds to inf... |
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Considering that much of the surface of the Earth is covered by water, what events have to happen to turn the Earth into a desert? What would happen to water that disappears from rivers and oceans?
**EDIT**: I'm thinking a near event, in about 2000 - 4000 years.
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The earth will be a lifeless ... |
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Alright, so I've been doing some research on hypercanes, which are, in short, theoretical hurricanes that may have ravaged Earth in its ancient past, when ocean temperatures were much higher (at least 120-some degrees Fahrenheit). These storms could reach sizes comparable to North America, wind speeds ex... |
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I've started planning a turn-based tactics game in the world I'm building, and I'm thinking of making the focus be on an airship assault force. The idea here is a transplant of the Vietnam-era UH-1 to 1910-1920s Ireland for the following purposes:
* Rapid response to various monster attacks;
* Search and... |
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Let's say we have a wild rabbit that can see a few minutes into the future. Being a non-sentient animal, it barely registers these abilities, and largely uses it to find food, avoid predators, save time seeking mates, and other such things rabbits do. After several months, some scientists finally manage ... |
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If people could travel in floating vehicles, fly with the help of a device and travel across the world in airships, would they still require roads designed for cars?
For instance, if you had something that looked like a car, but hovered, would it still require an asphalt road? Or if it flies high in the ... |
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I looked around and I don't think any other questions explore this specific issue, but a lot of stories use transformation magic and I find it confusing. In this situation specifically I'm referring to, say, a human, who can turn into a cat (like Professor McGonagall) as an example, which is a creature t... |
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I'm throwing around a rough concept in my head and wonder which effect it would have on the present world. How would the world as we know it change if this technology were invented (and nothing else changed)?
Imagine that we discover a way to build portals through space that connect distance points in sp... |
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So let's say you have a Dyson sphere that is ***5 kilometers thick*** . Now, it isn't solid. It's meant to be inhabited. There's the inner shell which is completely covered with solar panels and any other manner of power generation facing the star. It's 500 meters thick. There's the outer shell which aga... |
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An organism lives and reproduces inside the body of other animals. This organism pays back its host by protecting the DNA from viruses and radiation damage in 100% of all cases. The organism itself is also immune to viruses, bacteria and parasites.
Additionally, it boosts the immune system, supports the ... |
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Note: Magic is something that this world does still not fully understand making integration difficult, it would be mostly trial and error if at all attempted.
Magic and warfare stories are usually set in a time of swords and spears, but what would that world look like if its technological evolution conti... |
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**Scenario:** In my Evil Overlord plan, I release a poison into the wild which should kill all humans. However I made some sort of mistake in my poison design and I killed all [Vertebrates](https://en.wikipedia.org/wiki/Vertebrate) bigger than 0.5 cm.
The poison under discussion is a plot device, made ou... |
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All I know so far is, they're a developed culture of humans who live in cave networks underground, made fit for life. They speak their own language, and they have some contact with outsiders, with whom they trade. No one has ever been on the surface, and though concepts of "above" and "heaven" are captur... |
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They say all is fair in love and war. When we plan to invade our enemy's planet, we don't want fair. We want to strike them while they're down. We infiltrated sleeper agents in key points of their infrastructure. Those agents have laid down the ground work we need when the day comes.
Agent 2215 is a work... |
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The question is really all in the heading: is it possible for a macroscopic organism to subsist entirely on rocks and still gain enough calories to survive? I know of [Lithotrophs](https://en.wikipedia.org/wiki/Lithotroph) but all known lithotrophs are bacteria or archaea.
My idea at present is that exis... |
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Imagine, if you will, a world where aural communication is impossible. Everything is done through gesture - sign language and written language are common, but the spoken word is not used, and using any sound for communication is not possible.
Now, the obvious solution would be to simply make everyone dea... |
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>
> [The Hippocampus](https://en.wikipedia.org/wiki/Hippocampus_%28mythology%29) is a mythological creature and has typically been depicted as having the upper body of a horse with the lower body of a fish.
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***Considerations***
1. Gills or lungs? Would this creature come to the surface to take ... |
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So typically in a three - dimensional setting we tend to refer to people by their geographical point of origin (eg, Americans, Asians, even Jovians if we want to leave Earth).
My question is, what kind of names could we give people in a four-dimensional context where their time of origin is the distinct... |
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Transhumanism is an emergent philosophical movement which says that humans can and should become more than human through technological enhancements. Contemporary transhumanism has mostly grown out of a white, male, affluent, American Internet culture, and its political perspective has generally been a mi... |
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**This question already has answers here**:
[Is there a credible way a shapeshifter could gain/lose body mass when changing forms?](/questions/449/is-there-a-credible-way-a-shapeshifter-could-gain-lose-body-mass-when-changing-f)
(9 answers)
Closed 8 years ago.
I really do not want to do this howev... |
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Assuming medieval level technology. How long could a human remain unconscious without dying? What technology could be employed to preserve the life of an unconscious person?
I can see several specific challenges:
* Eating
* Drinking
* Defecating
* Pressure sores
* Muscle tissue loss
Would it be possible ... |
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This may be the first of a few questions in a series about building a medieval mountain fortress. I'll wait and see what the reaction is.
In the middle of a series of mountains lies a [stratovolcano](http://en.wikipedia.org/wiki/Stratovolcano) capable of massive eruptions. A cutaway view would look somet... |
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What planetary conditions would have to exist to make computers and other complex electronics useless or at least difficult to maintain?
Would ionised atmospheric conditions, constant solar flares, and unusual elements affect electronics and would these things damage humans or make human life unsustainab... |
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I'm developing a species which lives primarily underground ([see this prior question](https://worldbuilding.stackexchange.com/questions/14741/what-would-be-the-evolutionary-adaptations-of-a-subterranean-fantasy-race)) and has limited vision as a result. This species does not have the same number of cones... |
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* **What would be the characteristics required to make one region as hot as possible?**
* **How hot can it get;** Can it be hotter than [Dallol](http://en.wikipedia.org/wiki/Dallol,_Ethiopia#Climate)?
**Setting:** an earth-like planet with all the same characteristics than Earth except that the geography... |
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Is an alien lifeform covering itself comfortably in flames as a defense mechanism to wane off predators possible? I've heard of microbes surviving the extreme condition of outer space in complete vacuum and receiving high dosage of radiation, and a community of crustaceans thriving in hostile environment... |
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What are the economic effects of achieving the technological singularity. In particular, will humans have to work anymore? If there are no jobs, what will humans do all day? It would be nice if robots could take care of everything for the humans, leaving the humans to pursue leisure things and conduct sc... |
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I have an idea for a short SF story, where an alien race infects a tiny village with a virus, which eventually spreads to entire Earth. And I need to know what minimum time is required to infect the entire population?
As I remember, there was an assumption in the movie "Outbreak" that initial infection o... |
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Given a planet about the size of Earth, and a moon the Size of the Moon, how could one destroy the moon without flinging the fragments onto the surface of the planet or into outer space?
How can one make the moon break up and form a ring around the planet, like Saturn did with his moons?
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"All... |
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I was pondering a situation where adamantine could be harvested from deep underground, amongst lavaflows, to work as a fuel source.
## Facts:
The Adamantine has been heated for millennia at thousands of degrees C. Additionally, adamantine is actually a really terrible conductor and a great insulator; so ... |
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So I have a [Koosh-like organism](https://worldbuilding.stackexchange.com/questions/238327/can-my-deep-sea-creature-use-its-bioluminescense-as-a-flashlight-to-find-prey) which uses bioluminescence. I've recently realized that there aren't really any organisms on earth which can direct their bioluminescen... |
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The Sun is slowly growing more and more luminous.
[As a result of these processes, multicellular life forms may be extinct in about 800 million years, and eukaryotes in 1.3 billion years, leaving only the prokaryotes.](https://en.wikipedia.org/wiki/Future_of_Earth#Solar_evolution)
Earth will become uninh... |
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Modern ships are loud.
So loud in fact, that [it is actively harming ocean life.](https://news.mongabay.com/2021/02/for-marine-life-human-noise-pollution-brings-death-by-a-thousand-cuts/)
Now, this alone is a serious issue that needs to be addressed. However, in my world the issue is compounded due to th... |
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So Jimmy (the collective name for his brains) has this one-in-a-handwavium-amount blessing/curse. Instead of one central brain, his head, each arm, each leg, and his torso have independently operating brains. Each brain wants to do what’s best for it’s part of the body. The legs can move the body, the ar... |
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I have a hive-based, man-sized creature based on a honeybee. It still builds combs and produces/consumes honey, but (I think) honey wax isn’t strong enough to support the massive increase in hive size, necessitating an alternative building material.
The hives are built around the trunks of massive conife... |
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I plan to subject an entire earth-like planet to about 300m/s^s acceleration, **what is the shortest duration I can get away with for non-scientists to realize something has happened, without everyone’s brain’s smashing to jelly against their skulls.** For this scenario, we can imagine a sphere approxima... |
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An advanced alien species in my story created smart matter similar to utility fog, nanobots with extendable arms which link to form programmed structures. When the species moves to new locations a small volume of nanobots can be programmed to replicate.
Eventually some of the nanobots no longer respond t... |
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The answer to a [previous question](https://worldbuilding.stackexchange.com/a/228648/61053) suggested life could have the time to begin and evolve on a planet orbiting a blue star if it was at first a binary pair that merged. The technical term is a blue straggler. How could we show this on a world? Star... |
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Beavers, asides from being the largest rodent in North America and making rather fetching hats, also have iron compounds within their teeth enamel which allows said tooth handle higher amounts of mechanical strength.
It also makes their teeth orange.
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In a high jump sport on land, athletes would adopt Fosbury flop technique to cross over a bar. This bar is the indicator of how high an individual can jump with reference to the ground, so I wonder could a mermaid adopt this technique to leap over the "dragon gate", the legendary height barrier for a mer... |
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In the world I'm creating, I have merfolk who have human-level intelligence, live in pods/tribes of 10-50 (but are connected to each other and trade and exchange information frequently). Most worship a goddess of the sea who created them, and some have magic (mostly power over tides and currents).
They w... |
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Imagine that a ordinary human being was suddenly teleported to a distance 10AU from the center of the Milky Way. What would happen to them (in terms of things like pressure, temperature, radiation, stellar activity, etc.)?
I'm asking because I want to design a space station for my universe at that distan... |
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[I thought I had it.](https://worldbuilding.stackexchange.com/questions/212684/habitability-zone-around-a-supermassive-black-hole)
I thought I had finally found the solar system with enough light to produce hundreds if not thousands of Earths. I thought that a black hole 12 billion times more massive tha... |
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SCUBA equipment is pretty amazing, allowing us to breathe underwater and explore.
But they have drawbacks: they're noisy, cumbersome, and time-limited.
It seems like a futuristic scenario would include something lightweight and elegant that would allow me to survive underwater.
The guys in the video here... |
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Edit: This question has been reopened!
Medieval castles are mostly designed towards delaying or obstructing ground attackers. The only real threat a castle faces from above, at least from humans, comes from arrows volley fired up towards the battlements and arcing downwards or siege equipment. These thre... |
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Following on from [a recent question about animals](https://worldbuilding.stackexchange.com/questions/198406/how-dangerous-are-animals-with-no-history-of-human-contact), concerning a group of people traveling sideways in time, to a world that resembles Earth as it would have been had humans never evolved... |
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I was listening to a worldbuilding discussion on another site and somebody came up with an idea for a dystopian setting that they called "the worst of all possible worlds". **Basically, the idea was you have a setting where instead of the evil dictator being installed by inheriting the throne, manipulati... |
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According to Google, the sea is salty because the rainfall dissolves land minerals and salt, which then washes away to the oceans, and over billions of years that process raised the salinity of the oceanic water to the current undrinkable condition.
So is my thinking correct that if this is the case, the... |
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Organisms on earth have a wide variety of ways to detect the presence of other objects. Echolocation, electrolocation, vision, etc. One kind they're missing is detection based around bouncing microwaves off things, i.e. radar.
On my planet I have a taxon of flying creatures that live their lives complete... |
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**This question already has answers here**:
[Would evolution happen the same exact way if Earth restarted?](/questions/115747/would-evolution-happen-the-same-exact-way-if-earth-restarted)
(17 answers)
Closed 3 years ago.
When we go into speculative biology for worldbuilding, we often go straight t... |
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I'm wondering if it would make sense to replace Cattle with Goats,
in mountainous regions of my Dwarfen Kingdom.
I was thinking about creating a special bigger bread that is similar to an ox.
Would it be possible and if what do I need to consider when implementing it?
Also if making just transportation m... |
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**This question already has answers here**:
[Is it possible to genetically modify a being after birth?](/questions/1092/is-it-possible-to-genetically-modify-a-being-after-birth)
(5 answers)
Closed 3 years ago.
My story is Dystopian placed after a nuclear fallout, in a small group of isolated citie... |
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This is a small but critical part of my story; I need to kill off most of humanity (leaving a 5- or 6- digit number of survivors) and render the planet uninhabitable long-term, but survivable for a short time (as short as a few hours is OK). So I've been thinking about this scenario:
A large comet/astero... |
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Bear with me :) The aliens in my story are gastropod-like entities and I would really like them to communicate through the mucus they excrete. What could such communication look like?
Preliminary research into snails, slugs and their friends has turned up no leads, but I'm thinking of a few possibilities... |
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Primarily a biological question, but I'd also love to dig into social implications.
Here's the story -
Humans have colonized at least one other planet and trade / communication remained open for some time before a *massive* and *catastrophic* event took place that effectively isolated the planets complet... |
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I think I have established democracy, but I am very unintelligible on how they are called in the real world because I doubt I invented something new, I am just politically dumb. **Could you please say which type of government I created for my settings so I can look up some details and further inspiration... |
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If humans had the ability to physically travel to a universe similar to our own, how different could its fundamental constants be and still allow humans and other terran life to survive there long-term?
This would obviously require that matter, stars and planets are still able to exist, and that Human bi... |
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