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Posts by Renan‭

34 posts
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Q&A Why do flying saucers have to spin while flying?

What L.Dutch said, plus whatever process is making the hull rotate is making it act like a turbine from a wind or hydro power plant. From a certain point of view, the whole outside of the ship is a...

posted 5y ago by Renan‭

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Q&A Why would merfolk have hair?

In a fictional world with merfolk, the hair could not be a part of their body at all, but some kind of algae or other organism that would look like hair to a human or humanoid observer from another...

posted 8y ago by Renan‭  ·  last activity 8y ago by Renan‭

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Q&A Exploding vertebrates

Colobopsis ants explode when they are losing a fight, a behavior which is probably meant to discourage predators from hunting that species. It may also turn tides when in ant wars for territory. W...

1 answer  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

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Q&A Can an atmosphere be thicker at higher altitudes?

Can a world exist where the atmosphere is actually thicker at some altitude than at sea level? If so, what mechanisms would be involved?

5 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Anatomically correct banshee

The original, irish lore around banshees has it that they merely foretell the death of someone, but do not cause that death. American pop culture has changed this, so they do bring death and destru...

6 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Anatomically correct diegetic singing princess

I recently watched Wifi Ralph. There is a scene where Disney princesses teach Vanellope a mechanism that allows her to unlock the wonderful, magical power of diegetic music. Didn't want to r...

1 answer  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

Question music anatomy
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Q&A Anatomically Correct Whomping Willow

The whomping willow is a fictional tree from the Harry Potter series of books. It is a magic willow that can move its branches to punch people who come close to it. Small animals such as cats an...

4 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

Question creature-design
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Q&A Moving mountains

In our world, mountains generally only move up (while forming) or down (while eroding or sinking). Otherwise they follow the tectonic plates they happen to be on. In island chains like the Hawaiian...

4 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Would it be possible to have a GMO that produces chocolate?

I am inspired by some people who apparently believe chocolate milk comes from brown cows. I know that for sweet, delicious chocolate to come into existence, we need to do things to cocoa. Ferment ...

7 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Algae using UV light from auroras for photosynthesis

I was reading some questions on Quora and I found this claim: The polar regions have a very odd reason for them to have so much oxygen production. You see the Polar aurora run day and night in ...

2 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A How to evolve human-like eyes that can stare at the sun without protection?

Imagine a species that is very much like humans in shape, size and physiology. But they are able to stare at the sun for long periods without suffering any harm, and without needing any artificial ...

7 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Can the poison from Kingsmen be concocted?

In the movie Kingsmen, there is a poison which behaves differently from most other poisons. It has to be ingested in order to kill, but that is not enough. It is harmless until a radio signal is b...

10 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Could a passive radar-sighted creature see by space radio emissions?

I am working on a world which is very dark due to an opaque gas layer in the hight atmosphere; but it is opaque mostly in the terahertz range. The creatures in this world therefore rely very little...

1 answer  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Rivers without rain

On Earth, rivers are possible because rain and snow deposit water in high places. That water then forms rivers when flowing to lower places. Would it be possible to have the phenomena of rivers fl...

12 answers  ·  posted 5y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A How to create an artificial hurricane?

Imagine a civilization capable of interstellar travel and building Dyson structures, so technological advancement and energy acquisition are not a concern. They found a planet that is very Earth l...

1 answer  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

Question weather
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Q&A Is it possible to place a permanent probe on Uranus?

Before anyone points the finger saying this is a tasteless joke, there are some actual good reasons to pick that specific planet for exploration among the giants in our solar system: Smallest mas...

2 answers  ·  posted 6y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Anatomically correct metalhead, part 2 - physiology

In the Land of Metal, there exists a tribe that has upheld the gospel of Manowar with such zeal that it modified their bodies. Metalheads descend from humans, and may look human at a glance. A mor...

3 answers  ·  posted 6y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Anatomically correct metalhead, part 1 - headbanging

In the Land of Metal, there exists a tribe that has upheld the gospel of Manowar with such zeal that it modified their bodies. Metalheads descend from humans, and may look human at a glance. A mor...

4 answers  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

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Q&A How much medical information could we gather from a wrist-worn device?

Context I have been thinking about the Pip Boy device from the Fallout series of videogames. It is a portable, wearable computer that can gather a lot of data about the user. It looks like this: ...

3 answers  ·  posted 6y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A Space vacuum food preservation

In a world I am creating, some people have colonized Ceres-like and Moon-like worlds - that is, they live in domes or underground, in pressurized buildings. The planets have no atmosphere for all p...

3 answers  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

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Q&A Explosion-powered low-tech elevator

I am making a world where people live without access to many raw materials, including metals and wood. Among other things they harvest their own dead for a paper analogue. Another thing that is ha...

2 answers  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

Question reality-check
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Q&A Seismotrophic microbes

Earthquakes release a lot of energy, and some places on Earth have quakes happening very often. I have seen sources quoting the Earth having quakes from 20 to 1,400 times a day, depending on the Ri...

1 answer  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

Question biology
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Q&A Anatomically correct sharknado shark

Raining animals is a rare meteorological phenomenon in which flightless animals fall from the sky. Such occurrences have been reported in many countries throughout history. One hypothesis is tha...

5 answers  ·  posted 6y ago by Renan‭  ·  last activity 5y ago by Renan‭

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Q&A How to make it rain men properly?

In a certain world there is a ruler who runs a very powerful country with an iron fist. A faction of oppositionists has been giving her lip and has made some mean comments implying she brings the c...

1 answer  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭

Question weather
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Q&A Biological adaptations necessary for weaponized (or otherwise made useful) reflux

I have been thinking about which mutants from Marvel are most realistic and Zeitgeist comes to mind. Long story short, his power is weaponized acidic vomit. He can spew it a few meters away at will...

2 answers  ·  posted 6y ago by Renan‭  ·  last activity 6y ago by Renan‭