Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question.

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2
votes
1answer
51 views

How might a sea wyvern adapt its flame breath?

Sea Wyverns (name not final) nest on small, rocky islands scattered throughout the sea and primarily catch fish going somewhat below the water. Basically, wyverns ingest a piezoelectric crystal which ...
4
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0answers
56 views

How would a Jupiter sized planet impact humanity? [closed]

So while worldbuilding I was pondering the effects of such a large planet on humans and their development alongside magic, technology, society, etc. So the planet is like Earth in water/land ratio, ...
6
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3answers
76 views

How would the weather and organisms and flora be affected on an Earth-like planet with floating continents?

I am currently writing a script for my graphic novel. My novel is in the fantasy genre and I use energy-based hard magic (that is energy-based magic that has its sort of "science" and rules). So I don'...
3
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1answer
69 views

How might someone live for thousands of years?

A long time ago during the last ice age an early hunter gather human encounter an unknown entity (likely a alien) who granted him the power of immortality with him living at least up into the middle ...
2
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1answer
59 views

Immunity from all infectious diseases?

The human body can create a quintillion variants of antibodies.   Resistance to infectious diseases is mainly carried out by the methods: White blood cells (white blood cells) and phagocytes. White ...
0
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1answer
105 views

I have a way of giving something negative mass. Did I just end the world,or usher in a golden age of space travel?

So, somehow, I have discovered a process that makes an objects mass negative. Not its weight, its mass (although, I guess that the weight would also become negative). The thing is, before I try it, I ...
8
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8answers
734 views

Why would humans be the dominant species?

Humans, in most fantasy stories including in my own, are the dominant species. Why is that? Firstly, I guess I should give every race in my story strengths and weaknesses. Humans (same as us) have ...
3
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4answers
72 views

Malicious Infection Transmitted Across Outer Space

If an extraterrestrial race were to send a signal to earth containing a virus (technological or psychological), how could that signal then infect our technology and then be received by humans?
7
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13answers
5k views

Effectiveness of a glowing hot tungsten sword against medieval era knights?

A blade made out of tungsten alloy that’s also electrically heated to 3000C. The shape and sharpness is similar to a katana. The user carries a battery pack that provides enough energy for the sword ...
1
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1answer
54 views

what organs or modification needed to have plants that drink liquid blood?

so in my world the rivers and lakes (not sure about the sea yet) are made of blood that'll never dry up. The blood maybe fresh or not (I still haven’t decided yet,probably both anyway) i also haven’t ...
2
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4answers
118 views

Perfect centrifuge crew quarters for a interstellar spaceship?

I want to design a realistic interstellar spaceship that uses centrifugal force for only the crew quarters. But while looking up for designs I found the most common ones are the torus or ring design. ...
3
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1answer
106 views

Anatomically Correct Orang Pendek

This is a submission for the Anatomically Correct Series The orang pendek is a cryptid that reportedly inhabits remote, mountainous forests on the island of Sumatra (likely evolving from orangutans) ...
2
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1answer
89 views

What adaptations should a utility fog, that's meant to be an air-fuel explosive, have?

I found a way to ensure that even if either the Japanese Self-Defense Force or the U.S Army invades my fantasy world, its inhabitants would still have a fighting chance. Utiltiy Fog Hall thought ...
4
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2answers
125 views

The eating habits of metabolic wizards

If wizards had to draw energy from their bodies, using only existing biological processes and bound to vanilla human metabolism rates, how would they be inclined to maintain their bodies and diets to ...
0
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0answers
51 views

Humanoid species with Fully rotatable and foldable joints

I am creating a humanoid species for my setting and I thought of the idea of ​​making it that can rotate its joints with a 360 angle and can bend its limbs in any direction. Sort of like owl's 270 ...
6
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1answer
97 views

Feasibility of an amoeba sea

Humanity has discovered entire worlds filled with creatures that would question their understanding of biology, but one creature, if it can be called, has brought up many many questions. Appearance ...
4
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2answers
96 views

Feasibility of a tree with a circulatory system

I recently look at a question on this site that questioned if a “world tree” is feasible, Would a 'World Tree' be feasible in real life?. If i remember correctly, it stated that one way to ...
2
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2answers
123 views

Anatomically Correct Dobhar Chú

This is a submission for the Anatomically Correct Series Residing in Ireland, the Dobhar Chú is a creature of Irish folklore being depicted as: being carnivorous resembling an Otter being 7 ft long ...
4
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2answers
114 views

Could bipedal humanoids evolve from bears?

I'm wondering whether it would be possible for humanoids to evolve from bears. bears share many characteristics with primates such as being amazing tree climbers and having the ability to use tools. ...
4
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2answers
108 views

How to construct an Earth-like world with very high wind speeds

I want to create a world where humans can live outside (perhaps with some protective clothing) but where very high winds exist in almost all potentially habitable areas making life outside impossible ...
2
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3answers
67 views

Ways to increase temperature and still be habitable by humans

I am designing a planet that humans can live on for a few tens of thousands of years, while they are hiding from some sort of inter-galactic police force (or whatever). Therefore, it's important that ...
6
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2answers
194 views

Possibility of creating a gun that can permanently paralyze a person?

I'm wondering whether it's possible to create a gun that shoots some kind of shock wave to permanently damage nerve cells and instantly immobilize a hostile target but leave them alive. Would such a ...
3
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2answers
121 views

Feasibility of a massive and nigh-permanent sandstorm?

In my military sci fi story in which a squad of private contractors have to contend with hostile creatures reliant on scent and mechanoreception to hunt, I wanted to keep the sci-fi 'hard' and ...
8
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3answers
160 views

What environmental factors would cause bipedalism underwater?

While reading this question about how non-primate mammals could develop a bipedal stance, I became curious about the broader reasons why animals could evolve to walk on two legs. I found some ...
2
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1answer
90 views

Anatomically correct cockatrice

In short summary A cockatrice is is essentially a a two legged dragon that has the head and body of a rooster, it also has a serpentine like tail and either has feather like wings or webbed like ...
3
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4answers
126 views

Feasibility of making a clone with the same identity

So you decide to clone yourself, obviously the clone is a infant, but other wise looks perfectly identical. However, you start to think of how your new clone could be perfectly like you, in body ...
6
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3answers
152 views

What would be the best way to capture a Wyvern?

Wyverns in a lot of ways are living weapons. They're huge (roughly the size of quetzalcoatlus), can fly, can support the weight of ONE unarmored human, and can breathe fire. Given these traits, it's ...
11
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3answers
198 views

Feasibility of humanoids that evolved from non-primate mammals?

I'm writing a fictional story where non-primate mammals (and marsupials) evolved into different species of humanoids which roamed the earth. In my world humanoids have evolved from animals such as ...
8
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4answers
155 views

Swallowing solids without a tongue?

As a thought project, I wanted to make an alien species that eats without any use of the tongue, but I've run into the problem that it's almost impossible to swallow solids without choking without the ...
1
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1answer
85 views

What would the view from a spaceship traveling through inter-galactic space look like?

My character is traveling aboard a spaceship through inter-galactic space (it has left the Milky Way). The ship is traveling at the speed of light or so and has been for the last six thousand years. ...
4
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2answers
150 views

Is it possible for the body to turn to ash upon death

Say you see a fellow human walking on the street, nothing special, nothing new, but suddenly, BLAM, they're dead. You reasonably run away from the scene out of fear, but when you look back, the body ...
8
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3answers
161 views

Liquid-breathing piloted craft

Let us assume at some time in the near future, medical science perfects a biologically safe liquid air solution. It can fill up the lungs of the adult human subject and they can breathe it potentially ...
1
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3answers
209 views

How long or how hard is it to develop a medieval fantasy into a modern or even sci-fi civilization.?

Our universe dies due to entropy, so what do humans do best??? COLONIZE! A near sentient AI found a way to cross realities and because our universe was dead, everyone took the chance. They (about ...
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3answers
89 views

whats the highest a group of Yetis live?

A long time ago a group of proto-giants moved high up into a the Sodo-Himalayas. Yetis commonly live up on high mountain plains some of basic characteristics of Yetis are: are as intelligent as ...
2
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4answers
178 views

Are (near) instant data transfers feasible on an intergalactic scale?

Inspired partially by this comment on one of my answers, I got to thinking on what the quickest way to communicate would be on an intergalactic scale. Say humans have colonised the galaxy, and use ...
3
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6answers
177 views

What Else Could Reduce Global Sea Levels?

Anyone who has studied ice ages would know that during the last two-and-a-half million years of Earth's history, there have been periods where there was enough ice to suck up a lot of water. As a ...
19
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13answers
8k views

Are mechanical walking vehicles useful in combat?

This is a highly contested issue on this site, and I have seen many different opinions on this topic. Are mechanical legged vehicles (or mechs) useful in combat in a near future scenario? If so where?
3
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3answers
154 views

Anatomically Correct Mothman

This is a submission for the Anatomically Correct Series Residing in west virginia, Mothman is depicted as: Being 7 feet tall Being nocturnal Having red eyes (or at least appearing to) Having wings ...
5
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1answer
58 views

Creating a realistic Sea Boar [duplicate]

In medieval art depicts a verity of odd animals one of which are these Sea Boars now it's mostly likely that they were based off whale bones which were misconstrued as boars. but let say that they ...
2
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2answers
143 views

Is a sulfuric acid dragon possible?

So, aqua regia is a somewhat safe material for a living being to work with, but the problem is that it isn't metal enough. Somebody suggested in an answer to another question, that dragons would fare ...
7
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2answers
146 views

Is popping corn still viable as seed stock? [closed]

In a very near-future (as in, assume no spectacular technological advances or changes to society) post-apocalyptic situation, would a group of survivors scavenging a store after all of the fresh ...
0
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1answer
85 views

Feasibility of humanoids with bird heads

Humanity has spread out in the cosmos, colonizing various worlds, cataloging countless creatures, the usual interstellar species activities. One day, however, humanity finds a species that is arguably ...
7
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3answers
2k views

How to control a nanobot swarm

Say you somehow invented 50 thousand nanobots that are the size of medium sized bottle caps. Each are capable of hovering for a limited amount of time but do recharge with both solar energy and plug ...
21
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5answers
4k views

Realistic Unicorns

Contrary to popular belief, Unicorns are not related to horses but instead are descended from the Siberian Unicorn. Over time: their fur became whiter they became slightly smaller they have an above-...
4
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2answers
190 views

Whats the largest a kraken could get? [duplicate]

Krakens are commonly depicted as being large enough to bring down entire ships: The largest animal ever, the blue whale can reach up to 33.8m (111ft) long but it seems that they've reached the limit ...
1
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2answers
124 views

How could the most destructive spell work in my Barrier Magic?

The core concept is a bastardized fusion of utility fogs, and the magical barriers of witches from the anime Puella Magi Madoka Magica. Utility fogs are swarms of 100 micrometer robots, foglets, that ...
1
vote
1answer
65 views

how might flame retardant feathers work?

male Wyverns collect shiny objects in their dens to attract mates it quite common for Wyverns to get into territorial fight. Now Wyverns are capable of breathing fire but they are also covered in ...
4
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3answers
132 views

Creating a plausible Wendigo fever

It is believed that Wendigos are supernatural beings with an insatiable hunger for human flesh, or humans who are selfish and commit cannibalism and while the latter is more accurate, Wendigo fever is ...
4
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1answer
51 views

what kind of biology/evolution to create Xing Tian/Blemmye type of humanoid/monster?

here what Xing Tian look like and the description in the wikipedia. Xingtian appears in chapter 7 of the Shanhaijing (Classic of Mountains and Seas), which states that he fought and lost against ...
8
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2answers
241 views

Anatomically Correct Leviathan

This is a submission towards the Anatomically Correct Series The leviathan, (in biblical terms), is describes as being a colossal serpentine like creature, it’s back is covered in scales that are ...