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There was an apocalypse. Humans left cities in swathes, leaving their canine companions behind in the ruined cities. My question is, which types of dogs survive? Criteria -The dogs are going to be...
On my world there is a creature that has a 'split' in the plumage of its wings and tail. Instead of having a singular D-shaped surface (when viewed from above, the bird facing to the left), it is ...
Whether exhaust from a solid rocket engine, or something released by spaceships in flight (like aerobatic smoke in the atmosphere), could extended trails behind a ship be created that would not dis...
Ok so I was thinking about a way to hypothetically have undiscovered elements with bizarre properties (for unobtainium purposes). And an idea hit me: replace nucleons with heavier but stable counte...
So I heard about this thing on vsauce a while ago, where scientists use this thing called "acoustic levitation". They use ultrasonic frequencies to levitate various substances, for use of studying ...
In a fantasy world I've been working on Dragons are venerated by many for their ability to seemingly summon rain where ever they roam. It's common for the peasantry of the south to leave offerings ...
Armageddon is coming. A giant Texas-sized meteorite on a collision course with planet Earth is discovered in 2020. It will hit Earth in 2030 and will wipe out 90% of living things including humanit...
This one is rather straightforward. A character falls into a magically-induced coma for about 10,000 years and then wakes up to find the world around him different in quite a few ways. There's not ...
Mariliths are these D&D creatures that are basically nagas except with six arms. OK, technically this image is from Final Fantasy, but you get the point. What environmental factors could cau...
Imagine a creature much like ourselves that can control the usage of their own mind. For example, a dying ancestor may tell some parting words which are so important that the individual explicitly...
Due to the moon's gravitational pull, objects at Earth's surface directly under the moon are slightly lighter. This tiny lessening of gravity would also take effect if the moon were on the exact op...
I would like to create a map with the help of tectonic plates. I didn't really care before. Can tectonic plates have all possible sizes and shapes? As an extreme example, could a continent the size...
I am writing about a blood magic cult, and they drink/paint with collected blood to preform rituals and bursts of magic. Most of their supply is garnered through the use of human cattle, but in a p...
Around the American Civil War period, TNT and nitroglycerin were discovered. This made me wonder... what if a more effective recipe for TNT was developed, and efforts were made to manufacture it? ...
I've seen multiple posts on destroying the Earth, but is it possible for humans to reverse the spin of Earth? In order words, considering modern technology at our disposal, is it possible for hum...
This is question is related to the medieval world from my earlier question in which several types of intelligent hominids evolved in isolation, until they were rediscovered, conquered, and bred int...
In the near future humanity discovers a spatial anomaly at a point located somewhere between the orbits of mars and earth. This anomaly quickly induces delirium in anybody who approaches it and eve...
...It's paradox. They left us these technological marvels, yet with all their might and knowledge they failed to prevent their own doom... Excerpt from a lecture by the High Historian of Berli...
Below is a diagram showing transverse cross sections of skulls representative of the two subspecies (A and B) of the Trilateral* species. Is it plausible that such obvious differences "“ noting the...
I am looking for medically viable reasons why we might discover it to be more difficult than expected to bring pregnancies to term in space. This is for a society based approximately 75 years in th...
The starship 'Exciting Undertaking' has set off on a brand new five and a bit year expedition to explore the galaxy. To make such a starship possible, an artificial gravity generator had to be inve...
BACKGROUND I'm working on a medieval world in which homo sapiens domesticated several other species of intelligent hominids during their prehistory, at first enslaving them to take advantage of sp...
So I have been doing some thinking and I now am trying to design some aliens who can exhale very cold gasses or cool the atmosphere around them as a side effect of their metabolism and also survive...
Many worlds have an apocalyptic/cataclysmic event. If mine is a Great Flood, how long would it take for much of the world to be habitable land again? Keep in mind, by the events of the present, the...
They don't posses any advanced knowledge, their knowledge is in fact irrelevant, just their possible actions (it doesn't matter how irrational those actions might be) that would cause significant e...
