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For my story I have an alien species who are detrivore. They are also an intelligent species on par with humans. But many people have pointed out to me that intelligent detrivores don't work, because their diets don't support a large brain or a large body.
My question is therefore whether intelligent de... |
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I have a species of ambush predators that are going to be sentient space-farers one day. But to get them on that path I need them to evolve hands, which will lead to tools, and so on.
They come from a world of wide open grasslands, mountainous regions and canyons, no large forests.
The predators themsel... |
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A group of space criminals collectively known as the Butchers is gathering enough power to be considered as a serious threat. Although they are nowhere near as powerful as the two major space empires, they are large, heavily armed, and able to be a serious thorn in the sides of the two major space empire... |
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Maneouvrability is a potentially significant advantage in almost any battle. But, the maneouvrability of a spacecraft with inhabitants is limited by the inhabitants's tolerance to accelerational forces. Humans generally can't tolerate high g-forces for a long time. Even to horizontal g-forces, which are ... |
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Could a structure similar to that shown in the image below inspired by Roger Dean’s “Close to the edge” actually exist in nature? If not could it be constructed artificially and if so how? Assume the two bodies of water obscured by the mountain on the right terminate in waterfalls and that the waterfalls... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w... |
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Imagine a terrestrial creature with a sail on its back, like a [Spinosaurus](https://en.wikipedia.org/wiki/Spinosaurus) or [Dimetrodon](https://en.wikipedia.org/wiki/Dimetrodon). Would it be possible to use this sail as a lung for oxygen exchange with the air?
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Lungs are basically a gas exchan... |
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I'd like a gravity room on my space vessel for long space stays to avoid osteoporosis. They would spend a few hours each day in this room, reading or doing paper work, to maintain bone-mass.
I'm imagining a chamber (it doesn't need to be large) where the astronauts stand against a wall as the room rotat... |
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Okay, I know I'm posting a really implausible question, please be understanding....
Many years ago, a powerful mage went mad (occupational hazard; one *does* encounter eldritch horrors and reality-altering magic when one is a powerful mage responsible for keeping the world safe), harnessed the powers of ... |
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Now I know this is a very weird and impossible question, there is clearly no civilization on Venus. But for the sake of the story I'm cooking up in my head, Venus remains habitable and develops life alongside Earth.
Now the details of how Venus doesn't turn into a hell world is moot and respectfully, not... |
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In my dream I have been chased by a plane which had chainsaw blades instead of wings. That woke up my inner worldbuilder and instead being terrified, I started to wonder if something is even possible. So I summon you, my fellow Worldbuilders to help me with this:
**Design an airplane which uses chainsaws... |
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It's the Olympics, and it'll be one the world won't soon forget. The sprinters are in position on the starting blocks, the signal is given and the runners are off! However, one man gives off a fart so huge that it significantly boosts his acceleration. This mother of all farts propels him all the way to ... |
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It's modern day, and aliens travel to Earth (cloaked so that no one is aware of them). They send huge robots down to a town or city and manage to kill everyone there, apart from a single survivor.
This survivor manages to make it to another town, where the first thing he does is run to the police station... |
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I have a civilization in my story structured around the idea of worshiping the sun(s) as gods. The Church is the ruling body of this interstellar civilization and ensures that the "Blessings of the Gods" (technology) are only operated by Priests and the Chosen Few. Anyone caught violating the Blessings o... |
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I was recently reading an medieval heroic fantasy book and I was disturbed by the usage of the metric system. Distances, heights were expressed in meters and it reminded me advanced civilization and French Revolution.
Maybe metric system is not the best unit system if we had to stay consistent in a medie... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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This question does not appear to be about worldbuilding, within the scope defined in the [help center](https://worldbuilding.stackexchange.com/help).
Closed 7 years ago.
[Improve this questio... |
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In the Terminator movies, time travellers arrive naked and then steal clothes and other items from the locals.
In my society this is also true. However they can carry some things internally in the same way that drug smugglers do.
There is only so much that they can carry. When they arrive, they have to ... |
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One of the early events in my story involves a 2x2 mile section of a suburban town that is encased in invisible walls 100 feet (30m) high and perpetually subjected to heavy rain at a rate of about an inch an hour. It will keep filling up with water until it goes over the 100 foot (30m) walls roughly 50 d... |
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An alien race was rubbed the wrong way by humans being humans and decided that humankind has to go. However, unlike many other science fiction stories, they do not intend to give the humans even a semblance of a sporting chance by sending their equivalent of an invasion force. These aliens are capable of... |
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Imagine a world full of islands. No continents, just average-sized islands. There are so many islands, that it would look a bit like this from space:
[](https://i.stack.imgur.com/EEuIi.png)
Now, imagine that the sea is very, very deep. I... |
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What I'm thinking about is simply an animal,any with a protective bony-like shell covering its eyes.
The shell must be openable for clear vision but when closed the animal still has the ability to see through the shell with roughly good visual definition. These plates are transparent only to its own spe... |
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There have been questions of the validity of combat mechs and the shape of police robots before, but the general consensus is that the main reason for a mech to be humanoid is to appear less threatening to the people they are defending.
But realistically, if mechs are to be used by authoritative forces, ... |
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In my alternate history, during the Islamic golden age (in this case, 9th century Arabia - present day Oman), my characters are building a series of glass towers.
They are like lighthouses traversing from present-day Muscat to Niswah; 6 towers, one every five miles (total 30 mile journey). For aesthetic ... |
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For this scenario, imagine your classical habitable tidally locked planet: hot desert on one side, frigid wasteland on the other, and the only thing that is good is in the twilight zone.
Now, assume that the planet evolves life. How would life on the planet sleep?
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Different forms of sleep exi... |
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An ancient kingdom covers a several rivers in a desert basin all converging on a central, hypersaline, lake. Because of its central location, and the importance of the salt, the lake has important religious and cultural significance. In particular, an island in the middle of the lake.
I thought about mak... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w... |
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An ancient human like civilization exists on a planet like our own but warmer, with more deserts and smaller oceans. Climate change is forcing the daytime temperature slowly upwards. What measures might such a civilization take to protect itself from the increasing heat and roughly what sort of temperatu... |
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As I understand it, a massive battle with lots of bloodshed can cause pieces of land to become infertile, due to the amount of salt in the blood the land has to soak up.
If this happened, **how long would it be until the land could support trees again?**
I realize that the answer to this question is pr... |
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What attributes of a species (not space-faring) or culture could lead to reasons to not **want** or even imagine to develop near instant planetary-wide communication (Internet) technologies?
The species can know about the possibility of near instant planetary-wide communication.
Edit to clarify: For the ... |
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The primary mechanism of “faster than light” travel in my story is via artificially formed wormholes that can be created to transport a craft to a reasonably precise location. Would the existence of the ability to create an artificial wormhole mean that time travel would also be possible, or even a s... |
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What I'm thinking for this question is that some kind of filter is put around the sun by aliens that prevents some kinds of solar energy from passing through but allows other types.
Like if it stopped visible light but allowed UV.
**Is there any way that the parts of light plants need for photosynthesis ... |
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It's 2018. Dr. Evil tried to [rob a bank/destroy the city/take over the world] using a [unstoppable robot army/death ray/zombie ninja T-Rex]. Just when hope is lost, Superdude comes flying in with a timely one liner and vows to thwart Dr. Evil's nefarious plans. Naturally, this means a super powered figh... |
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So in my urban fantasy story, among other things, new fantasy races suddenly start appearing in the modern world via the system I outlined in this thread:
[Reasons to voluntarily change into a fantasy race?](https://worldbuilding.stackexchange.com/questions/110352/reasons-to-voluntarily-change-into-a-fa... |
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In the two latter periods of the Stone Age, the Mesolithic and the Neolithic, technology improved significantly. Their predecessors, the Paleolithic people, used roughly hewn flints as weaponry and tools, but the Mesolithic saw the wider use of more sophisticated implements, composed of wood, bone, antle... |
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The setting is medieval fantasy (for example, D&D) with *some* magic (although I would prefer solutions without magic).
# "The majestic canyon city of Hurr, the gem of the Durr desert or whatever"
[](https://i.stack.imgur.com/SsRfu.jpg)... |
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**Terraforming is the process of transforming a celestial body to become habitable by Earth-like life.**
Even when I try to imagine an advanced civilization, the cost, time and complexity to terraform a planet seems like a real challenge. Terraforming Mars seems like an easy job compared to other planet... |
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In a medieval fantasy setting, if you had to regularly deal with transforming into a beast that's taller, stronger, and that have a much larger build overall than your frail priestess body, what would you wear that could actually withstand the transformation without the need of constant repair, and how w... |
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The current world population is around 7 billion living people and 107 billion dead people. Since the population is increasing steadily and faster than ever, I was wondering if we could ever reach the turning point.
Given the 'facts' from [this source](http://www.livescience.com/18336-human-population-de... |
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Mounts are one of the coolest things about fantasy in my opinion. Riding around on raptors, dragons, elephants and even weirder things is one of the main draws to a lot of fantasy things.
However, justifying dragons and unicorns can be tricky. So, inspired by the hours I've spent riding a parasaur on ARK... |
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In my very lengthy story in the near future, there are some great 'Modern Marvels'. The next one I'm going to introduce might not be feasible, but if it is, I'd like to attach some numbers to it.
The Secretary for Urban & Regional Development with the Federal Highway Administration have secured the funds... |
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**Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers.
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**Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/239598/edit).
Closed 1 year ago.
The community reviewed ... |
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Rivers of lava are a staple of fantasy. But in the real world, lava flows are usually very short-lived phenomenons caused by volcanic eruptions.
Is there some plausible way on an otherwise earth-like world to have a naturally occuring river of lava which is several meters wide, several kilometers long an... |
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Take your typical Necromancer- able to raise/control/talk to corpses, summon/bind ghosts, wither an organism- things that revolve around 'death' as a theme, as opposed to manipulating life/death energy or just a specialisation of magic. Assuming that they don't have access to human corpses, what could th... |
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Could a war continue indefinitely? I see two parts to this question:
### Stability
A war is often unstable, in that a slight advantage gained by one side makes them more likely to win further battles and gain further advantage. This positive feedback loop makes power swing to one side or the other, rathe... |
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Suppose that there was a tribe of nomadic mermaids whose lives were primarily centered around following pods of dolphins to eat.
They live in the equivalent of the frigid antarctic seas. As they possess both lungs and gills, they can surface above the water or swim in the watery depths for hours on end w... |
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Self-explanatory. I have a planet-eating entity moving slowly across the solar system towards Earth and I wanna know how long it would take for us to notice its presence once it starts consuming Pluto (assuming we had no prior warning or knowledge of its existence).
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## Within Two Days *After*... |
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In the world I'm working on, magic has been Sufficiently Analyzed, and has been turned into a well-defined science. It takes the place of much of technology (why invent the forklift, when a magically-augmented human is just as strong, and far more agile?). It does, however, have two limitations:
1. It ca... |
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I am creating a world in which a society exists that is heavily inspired that ancient [Sparta](https://en.wikipedia.org/wiki/Sparta), specifically with a focus on [Spartiates](https://en.wikipedia.org/wiki/Spartiate) and their military education, the [agoge](https://en.wikipedia.org/wiki/Agoge). A charac... |
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I'm trying to imagine mystery setting when amateur astronomer stumbles upon a torrent which contains a 3D map of the Milky Way galaxy. The map contains all large objects: star systems, **planets**, nebulae, black holes.
Is there a way with our current knowledge to check is the map real or just an object ... |
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I've hit a wall in my tale of humans attempting to escape [the Singularity](https://worldbuilding.stackexchange.com/questions/6340/the-challenge-of-controlling-a-powerful-ai) or a [fate worse than death](https://worldbuilding.stackexchange.com/questions/6550/humans-as-pets) by running off into the depths... |
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**Captain's Log**
For some time we have been monitoring broadcasts from a planet that calls itself "Earth". We have noticed that it is fond of placing short documentaries in slots between the regular programs. They call these documentaries, "adverts".
Often there appear to be some creatures that are bred... |
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**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
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This question does not appear to be about **worldbuilding**, within the scope defined in the [help center](https://worldbuilding.stackexchange.com/help).
Closed 3 years ago.
[Improve this que... |
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For the sake of simplicity, my species is similar to humans but far more advanced. We will also assume that they live in a solar system similar to ours, and that they are advanced enough that they can 'catch' an asteroid and land on it.
These people wish to create a research base which orbits the sun, no... |
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In most representations of mermaid cities, they either live in implausible magical palaces, or in some more or less elaborate cave systems.
Assuming the only difference with our world is the presence of the mermaids (so no magic), and that those follow the typical image of lower part fish, upper part hum... |
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The [Hollow Earth](http://en.wikipedia.org/wiki/Hollow_Earth) theory is/was a pseudoscientific idea that our world is actually on the inside of a large sphere. The "sky" points inward towards the center, where the "Sun" (a light source) is, while the "ground" points outward.
Let's assume that we have a p... |
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No, not [that one](http://en.wikipedia.org/wiki/USS_Enterprise_(NCC-1701)). [This one](http://en.wikipedia.org/wiki/USS_Enterprise_(CVN-65)).
I want to see the USS Enterprise fly, but I'm curious how it would be accomp... |
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In a Sci-Fi setting, if there is a vast amount of non-humanoid intelligent life in the universe, like perhaps 20 or 30 species, would this make 4 or 5 species that look similar to each other, or similar to humans more believable?
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## The default humanoid is more believable than you think
A lif... |
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A friend of mine was telling me about a story where a man clear cut a diverse ecosystem of plants in an area similar to size and shape of a small caldera (not necessarily a caldera itself). Eventually, he noticed other plants were sprouting up that no one has ever seen before, as they were ancient seeds ... |
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The idea of a collective consciousness (Or Anthill) is pretty simple: instead of cells you have small sentient animal that make up a larger creature. This is different from a hive mind in that the individuals of a hive mind are all sapient, but in a only the collective is.
When I tend to think of this sp... |
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Let's say Earth suffered some technological catastrophe and the planet is now entirely or almost entirely only water and at today's commercial technological level. Putting aside the reasons and consequences of the apocalypse, people now live exclusively on ships, specifically big tanker/oil ships, that w... |
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I am currently brainstorming the history and logistics of the dragon species in my urban fantasy story about immortal mythical creatures. The way I currently envision them, dragons have their stereotypical signature hoards of treasure because they essentially use gold like solar panels: the celestial ene... |
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# Background
The Apocalypse came on Tuesday, and no one was ready. For us soft city folk, survival was mostly a matter of luck. If you fell in with the right group of people with the right skills and the right equipment, you had a chance to make it. It certainly didn't help that the Tuesday in question w... |
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Fantasy settings frequently include giants or dragons or similar creatures with human-like or superior intelligence who are also much larger than humans, and weigh many tons. If our giants or dragons live in or near human-majority settlements, they need vastly more living space to achieve the same qualit... |
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I'm thinking about using this as a sort of meta explanation for how Orcs (and possibly other things as well) are different than humans (in muscularity), but I'm not entirely sure what the result of this would be.
What would be the expected appearance of a humanoid race with a suppressed myostatin gene? (... |
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**UPDATE!!!! - FINISHED THE SCULPT :D**
[](https://i.stack.imgur.com/bk4lR.jpg)
[**UPDATE**: Much Much bigger response and feedback than i anticipated... |
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Goal: **Achieve a society where the average person is a creative and/or analytical and/or strategic genius and/or physically phenomenal (as measured by our current standards, of course).**
Steps:
1. Start with a regular extant human society. It can be the United States, North Korea, Sudan, Singapore, an... |
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By request, these are the two previous questions in this "series":
[Low Voltage Lightning and Alien Nitrogen](https://worldbuilding.stackexchange.com/questions/88956/low-voltage-lightning-and-alien-nitrogen)
[How To Make Lightning](https://worldbuilding.stackexchange.com/questions/90263/how-to-make-light... |
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An abandoned outpost from a long extinct race is discovered. It can easily be repaired and would make an ideal location for a colony, however it has been breached and any usable air has been long lost to space. The outpost has its own power systems that we are capable of turning back on and using, howeve... |
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I'm inventing a constructed world for a personal exercise in writing, and I was wondering if a theoretical cube shaped planet could have a moon. Is that physically possible? I am going on the assumption that the planet is artificial, and I intend on it being a rogue planet.
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It should be poss... |
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Okay, so based on some quick research, there don't appear to be any real-life cases in genetics of "circular dominance" where, for example, allele A is dominant to allele B, B is dominant to C and C is dominant to A, sort of like a genetic game of rock-paper-scissors. However, what I'm wondering is wheth... |
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Before we begin, I know full-well that the answer changes based on the time-period, size of the estate, number of people being taken care of, amount of money available, and so forth. **A correct answer would be able to give a [resident:staff] ratio or an accurate algorithm/formula to give an easily adjus... |
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I am trying to write a sci-fi setting in a not so distant future in which analog signal (brainwaves, in this case) processing is one of the main points of the plot and pretty much required to explain some of the mechanics going on in the universe.
Thing is, analog to digital conversion is expensive, and ... |
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Details:
A culture of dryads has a strange death tradition.
When a dryad dies there's usually a medic, or better say a "shaman" that rips a strange looking organ or gland off their head. The gland, shiny and the size of a hand, is then grafted into a tree.
After several centuries the tree is able to fi... |
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Suppose a species of obligate carnivores had convergently evolved human-level intelligence and body plan. How would this affect their agriculture/food production, and would it lower their maximum population
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Before asking such questions, you should provide as much information about the physio... |
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Some science-fiction books I've read (including more than a few by Ray Bradbury) have men from Earth living on Mars, walking around outside of enclosures. I know that this is currently not realistic, because Mars' atmosphere is [too thin to support human life](https://scifi.stackexchange.com/a/11166)1.
... |
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On Earth, photosynthetic organisms require additional nutrients to survive; in addition to "feeding" off of sunlight, plants respire and absorb water from the ground in order to grow.
However, the Earth is a closed system chemically speaking, so fundamentally all chemical resources are recycled through ... |
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I'm writing a story taking place in the semi-recent aftermath of a period of Human-Dragon warfare. The main character falls into a pit used during this period by dragons to trap/store/dump prey (humans).
For aesthetic purposes I'd like there to still be recognizable human bones, possibly still bits of f... |
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Assuming that human civilization in the future will spread from earth into the galaxy, how long would it take for the human population to exceed one trillion (10¹²)? I doubt this is possible if humans remain on Earth, and it may require humans to colonize exoplanets, depending on how many planets in our ... |
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In the very near future, humans (somehow) travel to a distant planet - and discover aliens who turn out to be uncannily like us. Their appearance is, to put it bluntly, freakish, but they *are* humanoid bipeds, and their life cycles, family structures, and basic needs are all reminiscent of human biology... |
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So I'm writing a story that has a species that's immune to being burned or suffering any kind of ill effect from being heated, functionally regardless of the temperature (I'm not planning on tossing these dudes into a sun at any point in the story). This is being accomplished by a species-wide magic/boon... |
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**This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information.
I kn... |
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In my world, I am attempting to design a primitive organism to be the ancestor of life on an artificial planet with all chemicals necessary for life. I want the organism to be as small as possible (say 50 nanometers in diameter). Is such a small size possible?
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50 nanometers is awfully small. ... |
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This is part of the [Anatomically Correct Series](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series/2798#2798). I've been wondering how an anatomically correct [pegasus](https://en.wikipedia.org/wiki/Pegasus) could evolve.
### Pegasus characteristics
*They are pretty... |
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I am interested in the concept of a chitin *endo*skeleton (rather than exoskeleton).
In the role of a humanoid internal structural skeletal system, how would chitin compare to bone? Would it be as strong? More flexible, or less so? Would it resist breakage better, or be more susceptible to fracture? Perh... |
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So at some point in the future, humans have small colonies on the Moon, on Mars and many space stations in orbit of all the planets in the solar system. Everything is going great until one day something happens on Earth that sparks a global nuclear war.
The USA, Russia, China, India, Pakistan, UK, France... |
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I've got an image in my head of a world where it's just normal that the star is black with a golden halo around it - in other words, where the planet is in a state of perpetual solar eclipse.
Are there any mechanisms that could lead to this occurring naturally? It seems like a tidally-locked moon around ... |
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The fantasy creature I am imagining (planning a short story or two around) satisfies the following analogy:
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> Human is to Chimpanzee as "This Thing" is to Badger.
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That is, the creature has a clear relationship to badgers, such as similar anatomy and behavioral inclinations. But it has also be... |
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> **Defining what is a super intelligent civilization:** An industrial civilization
> that invest on scientific progress and that builds and manipulates
> computers, robots and nano-machines, has efficient automatized
> communications and understand and manipulates physics and chemistry to
> a lev... |
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In my story, which should be taken entirely seriously, mankind encounters a region of space occupied mostly by giant exo-householdobjects.
That is, planet sized kettles, saucers, teacups, cutlery, etc. There is even a giant Russell Hobbs branded teapot, because this is how serious a story it is. They orb... |
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I am making a science fiction computer game where you can travel between planets. I would like the planets all to have some kind of differing materials. Now I have no idea about which kind of "materials" exist. I know an element is defined by the number of protons and the only thing that can change then ... |
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Got this idea from [Antarctica](http://legendmarielu.wikia.com/wiki/Antarctica) in the *Legend* series by Marie Lu
Imagine that we've become so technologically advanced that every person, ages 3 and up, has an implant in their head that tracks everything you do. You get points or reputation when you do g... |
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This is a submission for the [Anatomically Correct Series](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series/2798#2798)
## How would you evolve a harpy?
A harpy is defined [by Wikipedia](https://en.wikipedia.org/wiki/Harpy) as a flying creature with:
* **Long, human ... |
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Well folks, 2015 has come and gone, and we still don't have widely-available [flying cars](http://backtothefuture.wikia.com/wiki/2015#Actuality). While there is some promising work being done on "flying cars", which are more like road-capable airplanes, it looks like we're a long way away from the type o... |
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Brown dwarf stars are cool. Both literally and figuratively; the temperature profile for cool brown dwarves runs somewhere between 225K and 600K. It's possible if not probable that there exist some brown dwarves at room temperature (≈300K or 80°F). With such a hospitable temperature, is it possible for h... |
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As human population continues to grow and need for raw resources grow, various nations and private organizations begin colonization efforts of our Solar System beyond the blue and green sphere we call home.
For this question we are assuming that there have been no drastic changes to:
* World cultures
* ... |
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I have a work-in-progress scenario where an interstellar generation/ark/cryogenic ship has reached its destination, but there are no habitable planets. There's no turning back, and so now the colonists have to try and eke out a living in space and/or airless planetoids. At least initially, there is no su... |
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I envisioned this method of maintaining breathable oxygen. So each ship would have these gardens generating oxygen like the plants on Earth do. How plausible is this and how would it likely work?
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The [Atomic Rockets Web Site](http://www.projectrho.com/public_html/rocket/) has all you could wa... |
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In my own medieval fantasy setting, I have different countries that all have different populations. I admit that I have no idea of how many people should live in X or Y. Just using the numbers for the whole country is not really precise. I try to compare them to real medieval countries but I'm unsure of ... |
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In the Carl Sagan novel *Contact* and the [1997 film of the book](http://en.wikipedia.org/wiki/Contact_(1997_US_film)), aliens from Vega have picked up TV pictures of Hitler opening the 1936 Olympics, which is depicted as the first TV signal powerful enough to reach the stars. The idea of aliens picking ... |
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Suppose that there is a moon, orbiting a gas giant, and that gas giant is a rogue planet - it moves freely through the universe, unbound by the gravity of a star. This means that one, the moon will never see the light of day, and two, there will be no sun to warm it.
But say that the processes of volcani... |
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