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-1 votes
0 answers
63 views

Reasons/excuses to evolve and retain handlike manipulatory appendages [closed]

As you may know, humans' arms and hands are a direct callback to the times when our ancestors lived in more arboreal settings (monkey swing on tree type stuff)... we needed to be able to grip branches ...
Max Bird's user avatar
  • 517
4 votes
3 answers
191 views

Is it possible for plant life to evolve (and adapt) on a low CO2 planet?

C4 photosynthesis, which can operate in Carbon Dioxide levels as low as 10ppm A question related to these two questions: Habitable inner planet with large oceans, fast rotation and earth-like ...
casualworldbuilder's user avatar
6 votes
3 answers
1k views

Would human-shaped sperm cells work?

After looking at videos of sperm cells, they reminded me of someone swimming. I've decided this was a neat idea for me to integrate in my worldbuilding. For lore reasons, I have a group of people with ...
Dmyt's user avatar
  • 797
2 votes
2 answers
82 views

Role of mouth size in ability to replicate human phonemes

(If you're uninterested in any of the background info, boiled down question is in the second paragraph) As part of my worldbuilding, I have become very interested in conlanging; of particular interest ...
Max Bird's user avatar
  • 517
3 votes
1 answer
116 views

Is it reasonable that my human-habitable alternate universe look different?

In the story I am planning, I wanted to have two universes, one just like ours, in which humans evolved, and another that is sufficiently similar to our own that humans may survive, but in which ...
Monty Wild's user avatar
  • 63.4k
11 votes
8 answers
3k views

Mechanism behind a pink human skeleton

I have a group of genetically engineered humans with pink $\color{#fe019a}{\text{(#fe019a)}}$ skeletons. The humans are naturally born with it so it isn't transplanted. Furthermore, the skeletons are ...
Dmyt's user avatar
  • 797
0 votes
0 answers
41 views

Can the hemoglobin be fed something besides iron to make blood a different color? [duplicate]

A bit of context here. A species of Fairies in my world have silver-colored blood, and while researching for that, I learned that hemoglobins essentially require blood to be red because they need iron ...
Nightmare's user avatar
  • 163
6 votes
5 answers
2k views

Evolution of predatory elves

One concept I've toying with for a while is the idea that elves are a species of Homo that have adapted to a more predatory life style. With the idea that their agility and strength is derived from ...
Seraphim's user avatar
  • 4,971
1 vote
3 answers
202 views

How can decades-long ageless sleep work without either warping time or allowing biological immortality?

I am working on a setting with interstellar travel but no faster-than-light travel; since generation ships require almost perfect recycling technology and are unlikely to be socially and culturally ...
Choroflorocarbon's user avatar
3 votes
4 answers
618 views

multiple retinas in one eye

is it possible to have multiple retinas, would there be advantages to this? Or would it just not work at all? I have a diagram (a shitty one) and more explanation if needed Edit: sorry for the ...
spiderwriter's user avatar
7 votes
3 answers
1k views

Could variation of the universal constants affect computation?

One of the obstacles to realistic - yet interesting - space battles is that of effective computation. If all trajectories and whatnot can be computed much faster than a human could follow, it leaves ...
Spitemaster's user avatar
1 vote
0 answers
66 views

Could an organism breathe SO2 (Sulfur Dioxide) and reuse the sulfur atom for bones made of S8 (Octasulfur) and AlO3 (Aluminium Oxide)?

Problem Background I want animals on my fictional planet to use 6 SO2 (Sulfur Dioxide) instead of 6 O2 (Oxygen) to react with C6H12O6 (Glucose), to make 6 CO2 (Carbon Dioxide), ATP, 6 H2O (Water), and ...
PeanutbutterCat's user avatar
2 votes
4 answers
152 views

observable consequences of perfect healing

What are the Consequences of Perfect Healing? Or stated another way, what short-to-mid term observable consequences would there be after altering a human being to be in a perfect state of health, ...
A_K_M's user avatar
  • 101
3 votes
3 answers
170 views

A Better Genetic Polymer?

This is a long one. (TLDR at the bottom) The prospect of alternative genetic polymers has attracted the interest of people for almost as long as we have known about DNA. Indeed, many alternative ...
Baron_vonCernogratz's user avatar
7 votes
4 answers
1k views

Could an ecosystem entirely made up of parasites be possible?

One of the settings for a story I'm writing is gigantic worm-like animal. Being so large it stands to reason that there would be comparatively smaller animals living within and on the surface of it. ...
Graham Payton's user avatar

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