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In my setting, every humanoid creature in our worlds mythology is part of a different species that branched off from humans millions of years ago. I'm trying to devise a way to prevent crossbreedin...
This is a bit hard for me to put into to words, but it is an idea I have been working on for a few days, with input from a few other people. I have actually brought up part of this in a previous qu...
Suppose you want to mine material from, and eventually completely disassemble, a neutron star. Presumably, you would be extracting heavy elements from the crust, and expecting the neutron-degenerat...
Sci-fi is full of examples of engineered diseases that spread as viruses and usually they are so powerful that they kill almost everyone, and the possible cure is always the slowest possible, vacci...
I'm in the early stages of designing a city, and would like some advice about to structure its roads realistically for transport. The city is circular, with large roads entering the city at north...
I'm working on some physics questions for dragon riding, mostly regarding changes in temperatures at different altitudes and how that might endanger dragons and their riders. Recently I started won...
Consider: A spacecraft is travelling between planets. It accelerates at a constant rate for the first half of the trip, and then decelerates on the other half. Throughout the journey, aside from ...
Ever since Tolkien most, if not all, works of fiction including orcs portray them with tusks. Though this achieves the effect of portraying them as animalistic, what would the real world applicatio...
Post-apocalypse how well would photo-voltaic solar cells hold up? They are solid state so I expect they would do okay for a while, but would they remain functional for 100+ years. I know that du...
I was lucky enough to witness the total solar eclipse crossing the US this past August, but while it was impressive, it was also fairly short - lasting just under two minutes at my location. I'd l...
In the dystopic/post-apocalyptic world I'm building, civilization has been split into two different societies. One is the rich who live in very large, protected cities that have giant walls surroun...
I am envisioning an apocalypse scenario where a majority of vehicles and electronics are disabled and a vast majority of Grid infrastructure is destroyed. The Carrington Event in the 1800s produced...
Prompted by a question about the impact of dietary iron in elves (How would Fair Folk-type elves deal with dietary iron?), I wondered whether haemocyanin could be an alternative to haemoglobin in c...
One of the beliefs about the Fair Folk is that they are repelled or even damaged by iron. For purposes of this question, let's focus more on the latter: namely, how would an elf manage to live to a...
What other ways are there to save a human for a very long time. I know only about cryostasis. Let's say we have a spaceship traveling several hundred light years to a distant galaxy.
Assume Humanity was really wrecked by some malignant force, and a group managed to escape and find a habitable planet and 'settle' it. They weren't able to bring along much in the way of advanced t...
So I am aware of this question, which deals with large plants (trees) and animals, but I am interested in adaptations present in smaller animals on this planet, and how those might be stretched in ...
Basically I am trying to build a mass surveillance and MRI mental condition analysis network to manage law enforcement at small and medium scale inside threats to national and civilian security. I...
On my alternate earth, elves originally evolved their phenotype (pointed ears) in the forests of Africa and migrated to other forest biomes afterward. After settling down they developed the racial ...
This is my first post, I apologize in advance if my English is not accurate, it is not my first language. My question is: in a world where very advanced civilizations have achieved intergalactic t...
There seems to be a connection between orbital revolution (one year) and distance from the star the body orbits. For example, Earth orbits the sun at a distance of 93 million miles and completes o...
I'm interested in the viability of the following scheme for (relatively) fast space commerce within the Solar System: have a fleet of space stations essentially built around a long linear acceler...
The title fairly well sums up the question. We all know elves have pointed ears. Whether they be LotR style with slight tapers, or full blown foot long impracticalities, all elves have pointed ears...
A little while back, I went to see Valerian and the City of a Thousand Planets (honestly unsure of what reaction this is going to get), and there was a particular scene that showed a desert planet'...
Apparently these lizards have loads of Biliverdin in their blood making their blood green! Besides a defense against parasites I figure this is also an effective defense against predators. I woul...
