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3 votes
1 answer
139 views

Could HIV-1 evolve to successfully infect rats?

In my world that is set in a far future, a mammalian species from the Euarchontoglires superorder descended from brown rats (Rattus norvegicus) evolved to become sapient. One of the deadliest diseases ...
7 votes
1 answer
140 views

What should my “dusty plasma” based life-form eat?

First time posting, so thanks in advance to everyone! I am working on creating a life form that is made of complex or “dusty” plasma. My inspiration is a 2003 study showing plasma forming into cell-...
  • 79
0 votes
2 answers
82 views

Biology — A group of humans that magically became aquatic [closed]

In my setting, some humans hundreds of years ago became aquatic due to magic (the same setting has vampires pretty much like in the original Dracula novel, who descend from one guy who became a ...
  • 9
-1 votes
1 answer
159 views

Harmonizing Lamarckism with Genetics [closed]

Many Science-Fiction worlds, whether or not by design, have their aliens arise by what seems to be a form of Lamarckism. While this is all well and good, these same worlds also make use of a lot of ...
  • 13.2k
4 votes
2 answers
1k views

How would my Homo autisticus evolve?

In a satirical white drama/lighthearted tragedy (the opposite of black comedy/dark humour) science-fiction live-action film I am writing that takes place in 8991 of the Gregorian calendar, it has been ...
5 votes
7 answers
232 views

How to plausibly justify a species growing mineral-based protrusions that resemble horns or spikes?

I'm currently designing a sapient species for a science fantasy setting that's supposed to be a herbivorous, physically resilient, and bulky sort. They currently bear some resemblance to boars or ...
  • 59
3 votes
2 answers
212 views

What traits would a species have if it eats electricity to survive?

Microscopic or more complex, what do I need to keep in mind to create a species that eats electricity. Like it touches an electronic equipment or battery or cables and sucks in their charge or stored ...
  • 587
12 votes
4 answers
294 views

Sand Plankton. Is it possible?

In many Sci Fi and Fantasy worlds, the deserts are filled with giant megafauna that swim through dunes of loose sand. The issue with this depiction of course is not just the size of said sand ...
  • 3,855
-3 votes
1 answer
144 views

Creating Genetically Engineered Individuals [closed]

Let's say I want to make a genetically engineered being, who doesn't have iron-based blood, and is an improvement on humans across the board: strictly stronger, more resilient, greater lung capacity, ...
3 votes
4 answers
404 views

Diversity of speculative evolution flight mechanics? Attempting to design a megafaunal, aerial diving predator

So, I'm trying to get a concept drawn up for this aerial predator, taking a lot of inspiration from Barlowe's Expedition and its Skewers. I would like to give it a unique mechanism for in-flight ...
  • 71
-2 votes
1 answer
79 views

Could my deuterostome-like species exist? [closed]

I am writing a science-fantasy story that is set in a pseudo-post-apocalyptic Earth ten million years in the future, and it is about a strange creature that looks vaguely a deuterostome called Céleste ...
17 votes
10 answers
3k views

How could a subterranean alien lifeform develop space travel?

I have a sentient lifeform populating an Earth-like planet in terms of gravity / composition. But since that world is close to an old K Type star, the atmosphere is evaporating and letting UV rays ...
  • 301
5 votes
2 answers
177 views

How would a species descended from dipterans become eusocial?

I am writing a script about a post-apocalyptic Earth. Technically, humans and many other sentient species survived, but almost all bee species are extinct. But mosquitoes survived and became the most ...
0 votes
1 answer
125 views

a tribe of neanderthals survive on a tropical island off of the coast of india into the modern day. how might they evolve?

lets say this island is an exact copy of the climate and ecosystem of tropical India. how might Neanderthals evolve in order to survive this environment?
  • 511
3 votes
2 answers
271 views

Eusocial colonies as individual, sentient organisms

An idea I’m toying with for a sci-fi story is a species where the individual organisms are colonies of smaller eusocial organisms. The idea initially came from “hey if a bunch of single-celled ...
  • 31
8 votes
4 answers
482 views

If humans were transplanted to a different Earth-like world that they didn't evolve on, how would they deduce how they came about?

I have a world where prehistoric humans were kidnapped and transported to another world. This other world is Earth-like, with mammals (also transported from Earth then later diversifying into other ...
  • 31.5k
4 votes
4 answers
937 views

How long would it take for an animal (feline, in this case) to evolve into a humanoid-type being?

The animal I'm particularly focusing on is a cat, for which I'm curious how long it would take for said cat to evolve into a bipedal, intelligent, humanoid being capable of complex language and all ...
  • 367
5 votes
3 answers
471 views

Plausible Xenomorph-like Life Cycle

I have a species that I wish to create whose life cycle is similar to a Xenomorph from the Alien series. By this, I mean to create a species wherein: A Xenomorph, or Species A, the base creature, by ...
7 votes
5 answers
924 views

How would a Creature that needs to be seen by Humans evolve?

For my question, I was wondering the idea of a creature that needed to be visually seen by Humans or else, if no sight on it by a human being has been made then it can only last for 24 Hours. I was ...
4 votes
1 answer
273 views

Mesas of hard(solid) light

I searched the site and found answers saying hard light can't exist. Apparently in the three years since the last question was asked, scientists started making inroads on making solid light a reality, ...
  • 1,260
5 votes
5 answers
726 views

What alterations without drastically altering their humanoid shape nor horns, can I make to my species that lower the risk of neck snapping?

continuing from the question I had asked yesterday, I have had another query come to mind. For my humanoid alien species to possess horns, it would surely put forward the risk of being the shortcut to ...
6 votes
5 answers
1k views

Is it plausible for a being to possess a singular halo-shaped 'horn', while other members of the species possess two 'regular horns'?

I am currently working a humanoid roughly deer-like species in a sci-fi roleplay setting, and one of the developments I have had with such species has me stuck trying to explain it in a way that makes ...
7 votes
3 answers
510 views

What practical forms can a "branch-tailed" organism have?

So, I made the slight mistake of worldbuilding by starting off with just a planet's local sentient species and working from there. This species, the Trillek, have a more or less theropod appearance ...
4 votes
1 answer
267 views

Pandora- superorganism eywa

I've recently became curious about the moon wide super organism on Pandora known to the natives as Eywa. Eywa is theorized by human scientists to be a superorganism of all living things on Pandora. ...
3 votes
3 answers
1k views

If humans descended from raptors rather than apes [closed]

In my scifi novel, all intelligent life eventually reaches what we might consider a humanoid form. Likewise, life on other worlds generally follows a semi-parallel evolutionary path, meaning that life ...
10 votes
3 answers
2k views

Anatomically Correct Asari [closed]

This is a submission for the Anatomically Correct Series The Asari are one of the iconic races from the popular Mass Effect games and universe, and while the image above isn't from any official media,...
  • 1,127
20 votes
14 answers
8k views

How do you "devolve" a species?

I am writing a story where a species undergoes devolution. Is there any scientific or plausible way to do this? The process can be instantaneous or may take ages, I do not mind which as I need to ...
  • 1,085
6 votes
4 answers
1k views

Creating a sturdier spine

I've been spending a lot of time developing aliens for a comic I'm working on, in the skeletal structure department I've run into a bit of a roadblock, how to design a spine for a species that is kind ...
  • 259
0 votes
1 answer
173 views

Is elemental based evolution possible [closed]

I am dealing with Giants and Titans in my world, and I would like to know if there are any natural ways for a creature to naturally grow elemental bodies, like resistance to fire, or ice naturally ...
  • 37
-3 votes
2 answers
179 views

Something similar to immortality [closed]

Imagine if you could decelerate the activity of the cells, or some growth related hormone or gene. Could you cause an aging deceleration to some extent? Almost like being able to 'freeze' the body of ...
-1 votes
3 answers
102 views

Zero Gravity Evolution in People part 2 [closed]

While gravity is a constant force, is it possible for an animal to evolve within a low gravity environment to walk along the ground? Yes or no and if yes how? Thanks folks!
3 votes
3 answers
268 views

Zero Gravity Evolution in People

So in the story I'm trying to write, I'm having trouble getting the gravity on my fictional to seem realistic, and I would like to know if it seems technically possible? A group of astronauts travel ...
6 votes
6 answers
337 views

Biologic advantage of magnetoception

Humanity is often said to have 5 senses, but this isn't entirely accurate. This is one question of several in a series I am asking regarding going beyond the 5 senses. Magetoception is one of the ...
8 votes
5 answers
1k views

Sexual Cannibalism in Advanced Races

Horny and Hungry "You're like a father to me." "Yeah, I wish you were dead, too." "Thanks, Dad!" I have a world in my stories in which the inhabitants evolved from a race that practices sexual ...
-1 votes
1 answer
293 views

Human evolution on Exoplanet [duplicate]

Let's imagine that an advanced alien civilization came to visit us about 200,000 years ago, and that they kidnapped a human group at the beginning of the development of the homo sapiens species. They ...
  • 1
3 votes
2 answers
303 views

Alien "rabbit ears" [closed]

Why might an alien species have evolved long, narrow appendages/protuberances that resemble rabbit ears but aren't ears, horns, or antlers? They attach at the top and/or back and/or sides of the ...
  • 12.9k
4 votes
2 answers
190 views

How would a group of survivors with a rebel criminal get along stranded on an alien planet? [closed]

The rebel criminal committed something terrible that gave them their fate to be stranded on the planet. The other survivors believe that he is the one to blame since he's the only person from an anti-...
7 votes
2 answers
1k views

Evolution of Vampire Zombie

A parasite starts its first stage of life with the reproductive phase by cloning itself to infect as many people as possible without leaving any signs of its presence. After two days, the parasite ...
  • 3,862
3 votes
4 answers
1k views

Evolve back to human

If a tribe of homo evolves into a wild animal that doesn't resemble at all a hominid, is there any chance for this animal to evolve back to the original humanoid shape through atavism/other means? ...
  • 3,862
30 votes
13 answers
9k views

Humanity after 100 million years?

I'm writing a science fiction novel set 100 million years in the future, but humanity is still the same basic form we have today, biologically speaking. Would 100 million years of evolution ...
  • 403
13 votes
5 answers
2k views

Redesigning the human body to flourish on a high-gravity world?

This answer states that "guided evolution" would help babies develop under constant 3-4g's. This answer has inspired me to ask , what sort of genetic tinkering would help humans adapt to ...
  • 11.8k
10 votes
18 answers
3k views

Could a world where two neigbouring countries, only one of which uses 'magic', exist?

Of course, my question isn't about the existence of magic. It's about coherence of the story. Imagine two neighbouring countries. One of them resembles our society – it's science based, no magic, ...
  • 571
7 votes
5 answers
1k views

How quickly could a population of humans evolve into a different species?

I was thinking of a sci-fi story where a large population of human beings (let's say anywhere between hundreds and millions) live on a planet with robot guardians. But after a certain amount of time ...
113 votes
26 answers
34k views

Would intelligent life evolve any other body plan than humanoid?

Disclaimer: This question uses some liberal wording to get key ideas across. It's not meant to be academically rigorous, so please try to focus on the ideas and not the exact definitions of the terms ...
  • 4,230