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I have devised a semi-aquatic sapient species known as the Hexapi who until now I thought were trichromats. However, after doing my research on the evolution of the eye, I found out that colour vis...
It's my first time writing an original story and I have this idea, but I don't know if it could be scientifically feasible. My story would be medieval fantasy with magic, but I wanted to add a twis...
I remember reading Tarzan by Edgar Rice Burroughs. The protagonist is a an extremely strong man, capable of hand to paw combat with lions. The origin of his strength is attributed to living among g...
I'm working out the back story of a flying castle run by a king who has a squadron of 200 air cavalry. All the knights ride hippogriffs: head and wings of large eagles, bodies of horses. Horses ea...
Can using blimps to hold power lines and implement laser filamentation of ablout 7 meter span from the source of power for a contact free power supply to power an electric engine (designed to run o...
"The most sophisticated of the galactic elite crave the most exotic delicacies and few come more exotic or delicious than diamond cheese. This cheese made only on a small agrarian world on the oute...
Many people think that in the future, all jobs will be taken by machines and AI. Why then, would anyone bother doing anything at all, such as invent things, fight in combat, etc - in other words, h...
I will be writing a short story about humans landing on an earth-like forest planet with a gravitational force of about 3 meters per second squared (In contrast, Earth has a gravitational accelerat...
On earth, as far a we know, there are two main ways that bacteria gain energy. there is Photosynthesis, the transition of light into chemical based energies such as ATP. there are chemical proce...
I am writing a sci-fi novel, set in a 1984-style dystopia, so a society which is obsessed with order and surveillance where non-predictable behaviour is punished. My protagonist is a person with a ...
If you had a planet with hostile conditions (25 atm pressure, 400° surface temp) would it be possible that a cave system could exist beneath the surface at a different temperature and pressure, or...
I am building a science fiction world with technology comparable to the Halo Universe (AKA Warp Drives are a thing). The story is set in a section of the galaxy with various nations controlling mul...
Essentially all the members of an alien species live within a single relatively sparsely inhabited megacity. The city has a surface area of about 30,000km². The species happens to be almost exclu...
My character kills a goat in the mountains and eats some of it for dinner. What kind of plant or mineral could he use to preserve the meat to carry with him so that it stays fresh and doesn't becom...
This is a world with underwater merfolks and other humanoids. They have opposable thumbs, so they can use tools humans can use. Lets assume there's different subspecies and races of these merfolks,...
I'm picturing an universe where FTL travel was invented as a sort-of-fluke, and artificial gravity technology isn't available. Transit between star-systems takes at least a few days and a star's gr...
I'm imagining that a group of humans was transported to a different planet almost 100 thousand years ago. The planet is similar enough to Earth that they can survive, and already had other earth-...
My experience with mousetraps has intrigued me to think that way. They exploit every flaw again and again to get the food out of the trap. Once a trap holds on to one they all learn to avoid it. Th...
So, normal humans can tolerate up to 4g of acceleration. If I had the tech to freeze and thaw people, would being frozen aid in tolerating high-g forces, or would the brittleness of your froz...
In my RPG campaign setting the orcs are tougher than most other races. In hard times they can eat wood (small bushes and fresh pieces of trees). In really hard times they can eat healthy soil and...
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 ...
I need you guys to help me out here. I'm developing clothing ideas and I need to understand what animals and plants may be used to create such clothes. Part of a story that I'm creating is a wate...
This question is related to Deadly, Heavier than Air Gas, and Is a world with two different types of air possible? but has several different criteria. I've also looked at https://chemistry.stackexc...
For simplicity assume hypothetically we make multiple copies of earth: XS, S, M, L, XL. The only difference between them is their size (radius), everything else is the same. S is half the size of...
I have a new fluid, called Unobtaniol, which is a room temperature frictionless superfluid. It has the same physical properties as liquid helium, but with less freezing everything. A friend of min...
