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Imagine there are two regions, one of which has a significantly higher level of radiation. Think of Pripyat (higher level of radiation) and its surroundings (lower levels). How can a person withou...
Came up with this question when I read this. Would Immortals feel pain? Pain is our bodies reaction to a stimulus, telling us that something is wrong and that we should stop doing what we are doi...
Back home, Earth's moon is 2159.2 miles wide and orbits 238,900 miles from its parent. But let's pretend that the moon is 2500 miles wide and orbits 200,000 miles from Earth. Would the nightscape...
This was inspired by the question How would tattoos fare on reptilian scales Let's assume for this question that humans never lost their hairy, hairy bodies and are covered in fur. How would tattoo...
Is there any way a catdog (like from the television program Catdog) could survive? If it could survive could it evolve? Are there any reasons it couldn't?
I've been imagining an RPG universe consisting of eight solar systems orbiting around a black hole in a finite universe with an edge, and I'm wondering what the night sky would look like to beings ...
What scientifically, socially and logically plausible mechanisms allow two (or more) sapient land-based species (either closely placed on the phylogenetic tree, such as Homo sapiens and Homo neande...
Hydrogenic photosynthesis reduces methane and water to build biomass ($\text{CH}_2\text{O}$) and releases hydrogen: $$\text{CH}_4 + \text{H}_2\text{O} + \text{photons} \to \text{CH}_2\text{O} + 2\...
As a series of anatomically correct myths, here we have the Nuckelavee. Is there a realistic way that Nuckelavee could evolve? Using Earth or near-Earth biology, how close could I get to the classi...
Let's assume that Captain Bob Tiberius Kirk has been injured in a space battle. The universe does not have FTL travel, and the nearest hospital where Bob can be treated is 5 years of space voyage a...
Let's assume I have a planet and the planet itself is made out of something solid. Around the floating rock is a layer of gas, then a layer of liquid and then a layer of gas again. Thus the sea fl...
Some time far in the future, biologists develop a compiler targeting DNA. We could now create any kind of lifeform we wanted. In the process, biologists also disassembled and decompiled human DNA ...
In my world I am working on, the species is similar to humans in almost every way except for the following thing things: They a much more slender They have very light hair colors such as blond ...
Follow up to my previous question, after botched registration. We have an Earth-like planet tidally locked to a star similar to Sirius A. The star does not belong to a binary system. The planet it...
How to justify evolving pointy ears that stick out from your head, on a humanoid. Like this: They can either start from the usual round-eared human(oids) with ears close to their heads, or hav...
As part II of anatomically correct myths here we have the Angel. Angels appear in many cultures and are most commonly seen as simply winged humans. Is there a realistic way that angels could evolve...
If an Earth-like planet was tidally locked to a star similar to Sirius A, at which distance from the star would the night side be able to have liquid water, possibly with an average temperature of ...
The movie Back to Future revealed that Mr. Fusion (MF) produced by Fusion Industries (FI) was in widespread use in 2015. What the movie did not reveal was the FI was privately funded by Bill Gates....
A common question seems to be how to survive tsunamis / floodings and the like. However I'm interested in what a building would look like after a year under the water. Depending on the depth and t...
I want to build a world with inhabitants living in a constant twilight zone, although the planet itself should still be rotating and not be tidally locked with the sun. Optimally I'd want it to be ...
I've read several books where a major city, often New York City, floods. People live in the skyscrappers, sometimes for years afterwards. What would it be like if a city full of high skyscrapers wa...
I would like to create a civilisation that develops near active volcanos. In ancient times, they would make good use of volcanoes like: Use lava as heat resource. Use lava as material to make bri...
The trope here is a world with 3-4 X earth atmosphere with high oxygen content (30%). Nice things about this are it enables heavy beasts to fly, and the high pressure smoothes out the negative effe...
I know a submarine would NOT make the greatest spaceship in the universe, but could it allow people inside to live in space? A submarine can resist pressure, can hold oxygen inside, and there is a...
There's plenty of iron oxide available on the surface of Mars--that's why it's called the Red Planet. So colonists would have no trouble getting ahold of iron for building stuff. The problem is, ...
