# All Questions

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### Practicality of Zeppelins for Temporary Agricultural Irrigation?

I'm building a colony that is an unintended eclectic museum of simultaneous, anachronistic stages of industry: Industrial, Machine Age, and Atomic+ (onward into more esoteric, advanced technologies ...
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### Is it possible an ice line from pole to pole in a tidally locked Earth-like moon?

I am aware that there are a lot of answers explaining the fundamentals of a tidally locked "Earth-like" moon around a giant gas planet. For example this one: Habitable moon of a gas giant: working out ...
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### Increasing structural integrity on Phobos, is it possible?

In Warlords Phobos is comparable to Ellis Island for Mars with its surface being home to many decent sized colonies and space ports (making use of the close proximity of Phobos to Mars) that ...
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### How quickly could a Norse longboat get from Denmark to “Vinland” (Newfoundland) and beyond?

Alright, departing from my usual fantasy setting to something of a thought experiment. Let's say, for argument's sake, some Dane longboat captain in the 10th or 11th century worked out how to make a ...
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### How to avoid cursing myself with my black magic?

My magic system works through runes,Each rune has a different effect and they need to be carved on different materials for different effects. Lets focus on curses,This curse name is "I rot your life",...
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### What factors would deternine the evolutionary pathways of chaos spawn?

In this world there are certain areas that are heavily radiated with energy that seeps in from another realm. In these places, evil creatures are born from out of nothing called chaos spawn. They ...
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### How would I create a planet with exaggerated aurora?

I want to create an earth-like planet with massive aurora, visible during the day, and from the equator. How would I go about doing this? Do I increase the strength of the planet's electromagnetic ...
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### How many dead bodies are required to stain a river red?

Historical accounts of battles sometimes talk of rivers running red with the blood of fallen combatants. Many Lancastrians were killed while fleeing; some trampled each other and others drowned in ...
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### Roller skating powered armor?

One common problem with powered armors is their limited endurance. This could be remedied with electric roller skates as an efficient and faster way of locomotion, capable of maintaining its speed ...
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### How much would unbreakable bones help with fall damage?

If a subspecies of human had bones that were made of an almost unbreakable material (let's just ignore any adverse effects this might have) how much would these bones help them to survive falls? ...
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### Taking control of the Human population with nanobots

Deep in an abandoned underground lab in Russia, a self-improving cybernetic intelligence has decided that he wants to take control of as many humans as possible using nanobots that he created within ...
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### How to cause a surge in large carnivore diversity, roughly 5-7 million years hence?

I have had an idea for a possible story, where the protagonists are some kind of future, sapient hominid descendants (Not descended from humans; bonobos or gorillas or something). The main premise of ...
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### Can an alien civilization develop without money? [duplicate]

I'm designing an alien civilization and I was thinking: Could a civilization exist without money or any other sort of economy but instead do everything to help each other? Now, I know most of you will ...
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### I need a way for a NASA spaceship to be able to dock with the hatch of an alien ship

I need a way for a NASA spaceship to be able to dock with the hatch of an alien spacecraft. The alien ship is automated so there's no communication, and being alien, the hatches on both ships should ...
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### How would we overcome the sinking problem as sediment builds up around urban areas? [on hold]

As sediment builds up over the earth, it is compacted into layers of rock, which can be seen in the geological record. However, urban areas typically have good maintenance which washes away any ...
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### How could the government not prevent a medical company from helping terrorists? [on hold]

Recently, the government has found out that the biggest medical corporation (responsible for plenty of technological progress) has been financing and providing material aid to an organization ...
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### What is the scientific explanation that 'curing' undead actually harms them? [on hold]

I don't understand why curing/healing the undead actually harms them. I always assume that curing is repairing, therefore it doesn't matter if you're undead, if you have damage (i.e wound) you will ...
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### Why Would an Enemy Army Retreat if they Will Die Anyway [on hold]

I am Kaine!! God king of the Wraith-men exiles. With my brother Carrion and his twelve sons and their hordes, we have laid waste to many realms. It is only when we went to war with holy city of ...
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### Is a pig-mounted cavalry possible?

Recently, my neighbour upset me. I have discovered that he plans to somehow improve his trebuchets to throw nasty things across the river. I told him that my pig-mounted cavalry will attack him. I ...
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### How could a medieval society catch a large number of birds in a short length of time?

I was lounging about in my throne room when a man came to speak to me. He had one leg cut off (recently, too) and claimed he was an alchemist. He says that he wants to get revenge on the king of the ...
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### Can you help me find Home Health Care datasets? [on hold]

I need some datasets about Home Health Care (HHC). I found one, but it does not have relative information and data. How can I find those?
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### Spaceship Emission Security

In my military scifi novel the military is, obviously, very concerned with security aboard its spaceships. They don't want other people to be able to receive any information about what happens on ...
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### How effective is a spoon to mutilate my former alchemist?

I did it. I found the alchemist that turned my pigeons into spoons. He also turned my wife into a giant spoon. Sure, she speaks less now, but I'm still upset as I need to find a new one... He is too ...
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### Clouds on a planet surrounded by a giant “meridian” wall

I am writing a fan-fiction (thus the world that my story is set in is not mine though some modifications can be done in accordance to my story's timeline and setting in relation to the canon universe) ...
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### What is the distance between binary planets? [on hold]

What should be the distance between two Earth-like binary planets, each having its own moon? Each planet is rotating about a barycenter in a plane of their solar system and the moons are rotating ...
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### Peeping at Antipodes: How long would it take to peek around the sun using modern technology?

Assuming humanity was suddenly highly motivated to do it, how long would it take a probe launched from Earth to get into a position to record and broadcast images of the position in the opposite orbit ...
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### How fast would a Martian space elevator travel?

READ EDITS I am writing a passage about the main character of my book travelling up a space elevator to the spaceport that rests in geostationary orbit above Mars. This means that the elevator would ...
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### What could trigger an Inverse Chronological Order experience? [on hold]

In the movie "Memento", we as the viewer see the movie from what's called Inverse Chronological Order experience, where we see the ending first, and then the subsequent events leading up to the "...
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### Self-destructing messages

I need a way to send messages that can only be viewed once, and then become permanently unreadable (physical media destroyed, encrypted, any method as long as the message cannot be feasibly recovered ...
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### Could the genetic makeup of two parents theoretically combine just right to make a superhuman, or at least semi-superhuman child?

Basically I want my character to have only gotten their powers through the luck of two parents with the right genes mixing. Technically, given enough time and enough generations of breeding, couldn't ...
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### Largest Population for Ancient World Migration/Encampment [on hold]

Young-adult fantasy involving time travel to ancient Egypt to participate in the (Biblical) Exodus. Trying to work out the number of people this journey can reasonably accommodate. My goal is to ...
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### What could explain why trees only have 12 rings?

A colony of space travelers makes their way to their new home planet. After landing and establishing their base camp, a wood worker begins to cut down trees and notices that none of the trees have ...
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### What does a solid, 1 mile diameter subterranean glass sphere look like?

There is a solid glass sphere that is 1 mile in diameter. It is completely covered in dirt and rock, except for one small room that is built adjacent to the sphere. One of the four walls of this ...
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### boron based life- blood

I've been working on the anatomy of my boron based life using alternative biochemistry. But I've recently came across a problem that I can't solve on my own. In oxygen breathing life on earth, the ...
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### Applications of Electromagnetism in “Force Fields”

Lengthy Explanation of Why I'm Here: TLDR; "force field" made of electromagnetic radiation. Recently, I've decided to compile a list of possible technologies available in the 22nd and 23rd centuries,...
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### How long does it take to build a medieval city wall?

There is a medieval city that, for multiple reasons, doesn't have any kind of structural defense, but they decided to build a wall now as there is risk of a war in the bordering kingdom, which can ...
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### Extinction Equilibrium: 50%

The last time I asked a worldbuilding extinction question, I asked on what sorts of factors would create an extinction event in which 96% of all terrestrial species and only 70% of marine species died ...
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### Could humans wipe out all remaining wild vertebrates on Earth in one year, if no effort is spared in doing so?

Humans already exterminated more than 50 % of wild vertebrates individuals since 1970 1, 2. I was wondering if it is possible to wipe out the remaining 50 % in less than a year ? Note that, in this ...
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### How could embryonic diapause have naturally developed in humans?

embryonic diapause is a reproductive strategy that is used by a number of mammals. In embryonic diapause, the embryo  does not immediately implant in the uterus after sexual reproduction has created ...
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### Fantastic gas, part 1: could a gas be 'polluted', 'rarified', or otherwise react negatively to electricity, excluding methane-like explosions?

I previously asked a broad enough question about designing a fictional gas but it was advised by two users to split it into smaller questions. So here I am. The main property I want this gas to have ...
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### What can I do to make my son's snowman survive, using medieval technology?

What my son likes the most with winter is making a snowman. What my son hates the most with winter is melting of his snowman. I really would like to make him happy and make the snowman survive for ...
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### Electric power system connecting the Earth and the Moon

It’s year 2050 and within 10 years, all fossil fuels will be used up. All countries signed an agreement to approve an international construction, described as follows: A track will be built on the ...
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### How to evolve fully terrestrial sharks, 100 million years in the future?

This is part of the same world I am making that this question I once asked is set in: How to evolve a reptile into a wyvern, 100 million years in the future? I might call these questions related to ...
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### What other technology exists that are safer and simpler then cellular wavelength communication? [on hold]

Communication without all the hassle. Is it to be presumed that cellular technology is the only form of external communication the world has to offer.
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### How would a child with a thousand years of experience behave?

Here's one to ponder: what would an immortal eight-year-old be like after one thousand years? In most stories involving immortality, the immortals are fully formed adults. When those stories do ...
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### Defensive capabilities of a pyrokinesis using superhero?

I’m creating a superhero story, and one of the heroes is a character named Joseph Kroger, AKA The Phoenix. He can create fire with mind, and manipulate it. He also has a high tolerance for heat and ...
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### Winterizing a Municipal Water System

I'm the last person in a large city. Everyone else has left and I don't know when they will be back, if ever. I'm planning on staying in the city as long as I can. I want to avoid, or minimize, a ...