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Scaphism, also called "The Boats", was one of the yummiest and funniest most horrific and gruesome execution methods in Human history, invented by the Persians. The condemned would be tied between ...
Location: an interstellar gas cloud Situation: an alien family stops for about half an Earth hour in the middle of the cloud to have a snack along their trip (by stops I mean they get null relati...
Would it be possible for a small island to have both tropical beaches with a warm sea for swimming AND snow covered mountains suitable for skiing? If it is possible: how far apart would the beache...
On Earth, land vertebrates generally have four limbs. Other creatures such as insects can have more limbs, but those creatures tend to be small. I'm thinking of creating an alien ecosystem with rel...
My main character is a human with grey irises, and I want to know how I could realistically explain her irises glowing - as if the irises themselves are lightbulbs - red or purple during moments of...
Tech level: more or less contemporary, no tech that would put you in awe. I'm trying to make realistic, driverless, mass-transit system. The first idea was that "driverless" implies that in each ...
A gram of vaporized polonium can kill more than a million people and thus is the most potent poison known to Man. Having read this article, my crazy dictator immediately assembled the most experien...
We are talking about those comrades who come out on wet autumn days - you're right, normal earthworms, Lumbricus terrestris. Playing an important role in ecology, earthworms stand at the lower end ...
Start with present day "maker" culture. People, including youngsters, play with microcontrollers and machine parts, with synergistic technology like 3D printing, shoebox-sized robotic milling mach...
If you were to decide to live on a spaceship for the rest of your life, how would you farm? You have access to the necessary farming materials; Dirt, plants; etcetera. Ship is large enough to...
A scientist creates device that allows some degree of communication with the afterlife. The communication is very difficult and the dead can only pass small bits of information on, so there is a lo...
TL:DR You and 1000-2000 unprepared and untrained settlers are stranded in an uninhabited area that has never had any human development. If you had nothing but the knowledge of how things work and...
I've had a look around the internet and the only real classification system for planets seems to be the one from Star Trek, which I don't want to use. The real groups that planets fall under seem t...
Basically, I want to create an apocalyptic event that knocks out most electricity, for a long time, hundreds of years at least. Electronic devices that do work would be extremely rare, and people e...
The planet in question is this one. The atmosphere mainly consists of nitrogen and is approximately a quarter the density of Earth's; I chose surface temperatures ranging from -50°C to 0°C. I ne...
A planet approximately 70% the size of Earth with a surface pressure of approxiamtely 0.25 bar at sea level. The atmosphere consists of the following gases: Nitrogen (98%) Oxygen (1.5%) Carbon mo...
If I understand it correctly, moving in the absence of forces like gravity and without friction doesn't require energy, only accelerating and decelerating does. So you could move a spaceship a very...
A century ago, after a catastrophic event on our planet, many of us were were forced to find a new home. There was one world that caught our attention: a tidally-locked blue planet orbiting a red d...
Certain anatomical features distinguish the alligators, crocodiles, gharials and caimen from the other reptiles. A four-chambered heart, something also found in birds and mammals A unidirectional...
Would a species which developed on a world with no atmosphere (i.e. the moon) survive on a planet with an atmosphere, such as Earth?
Our planet is dying. Cliche, I know, but unfortunately true and we do not have superpowers or the technology to build generation ships to escape. We have maybe a hundred years left, and we have d...
I'm thinking of aliens that don't have hands but use their tentacles to make and use tools and, eventually, advanced technology. I would like to know whether this is a realistic idea. For the purpo...
This question is really about best possible travel times between celestial bodies. In my current sci-fi setting, the Human race is spaceborne, but incapable of FTL travel. Their thrusters are exc...
Would it be possible that other planets, or even other random celestial bodies, contain different types of pathogens? According to Wikipedia, the known types of pathogens are: virus, bacterium, pri...
