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General Q&A about worldbuilding and other speculative developments that can be extrapolated from science.

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Activity Age Score Native Lottery
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Could a centaur eat something that is poisonous to humans but not horses?

2 answers  ·  last activity 3 months ago by AshaC33

biology races centaur fantasy-races poisons
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Giant planet renders one side of its moon deadly, the 'shadow side' habitable. How?

3 answers  ·  last activity 3 months ago by N. Bleac

planets science-based radiation
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How Would I Believably Wipe Out an Entire Planet's Population and Culture Without Destroying Said Planet?

5 answers  ·  last activity 3 months ago by The Weasel Sagas

reality-check planets civilization apocalypse post-apocalypse death
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Life develops on a moon left in darkness?

1 answer  ·  last activity 3 months ago by Greenie E. - Reinstate Monica

biology science-based xenobiology
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How would three small moons, rather than one large one, effect an earth-like planet?

1 answer  ·  last activity 3 months ago by Puck

reality-check science-based moons
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How can a "magic" mirror flash blind people?

3 answers  ·  last activity 3 months ago by Mephistopheles

science-based technology light
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Technological "dungeon" designed to last for millennia

1 answer  ·  last activity 3 months ago by Bogdan 705

science-based technology dungeons
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A Mammal with Electrical Defenses

1 answer  ·  last activity 3 months ago by user3556983

biology electricity zoology city
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Would serial killers be a thing In a world where duels to the death are perfectly legal?

1 answer  ·  last activity 3 months ago by Jordy McCroquette

reality-check psychology
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Can cherenkov effect be used for telling how fast FTL spaceship moves?

1 answer  ·  last activity 3 months ago by user6760

science-based faster-than-light mathematics light science-fiction
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If Earth had a smaller second moon, what would the sky look like?

1 answer  ·  last activity 3 months ago by RobotPQ30

earth-like science-based moons earth science-fiction alternate-earth
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Language that cannot be divided into words?

20 answers  ·  last activity 3 months ago by lirtosiast

science-based aliens language
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I need a spacecraft to be pulled into the sun's gravity!

2 answers  ·  last activity 3 months ago by zengun309

reality-check gravity
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Could ocean and wind currents form on a tidally heated body

0 answers  ·  last activity 3 months ago by Samantha Clark

weather reality-check moons
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can spacecraft heat be 'vented' with entangled particles?

3 answers  ·  last activity 3 months ago by Daikael

space reality-check science-based spaceships ships science-fiction
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Where can you find berries that eat people from the inside out?

4 answers  ·  last activity 3 months ago by Clockwork Parzival

creature-design flora ecology alcohol
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What is the minimum and maximum gravity level that nearly all humans can sustain over a 5 year period?

4 answers  ·  last activity 3 months ago by galactic_analyzer

humans adaptability gravity health
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Evolution of flying skulls?

3 answers  ·  last activity 3 months ago by bio

reality-check evolution fauna creature-design
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A tiny fire-breather

2 answers  ·  last activity 3 months ago by user3556983

biology dragons zoology
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What would happen if a black person used genetic modification to turn off the MC1R gene?

2 answers  ·  last activity 3 months ago by Sabrine Crystal Santos

biology genetics genetic-engineering engineering
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Adjusting to the Sound of a Waterfall

5 answers  ·  last activity 3 months ago by Halfthawed

biology waterfall
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Werewolves and sense of smell, what is reasonable for them to accomplish with it?

3 answers  ·  last activity 3 months ago by Demigan

biology chemistry biochemistry werewolf
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Hematophagic Organism Body Size

1 answer  ·  last activity 3 months ago by Thalassan

biology evolution
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How could Ice Spikes naturally occur?

4 answers  ·  last activity 3 months ago by DigiAB

climate reality-check extreme-terrain
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Possibly of achieving prolonged immortality

3 answers  ·  last activity 3 months ago by RotNDecay

biology science-based death immortality
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So, how do I put the extra muscle, needed for flight, into a large flying creatures like dragons?

3 answers  ·  last activity 3 months ago by Mephistopheles

science-based creature-design dragons flight light bio-mechanics
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What's the largest a canine could realistically get?

1 answer  ·  last activity 3 months ago by icewar1908

biology evolution science-based creature-design
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What aquatic life would utterly deplete the soil of a specific nutrient?

3 answers  ·  last activity 3 months ago by user72058

biology culture geology agriculture chemistry zoology
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How do I calculate the total time dilation experienced by an accelerating ship?

1 answer  ·  last activity 3 months ago by Starsong67

space spaceships time ships time-manipulation
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How/why could dragons develop six limbs?

3 answers  ·  last activity 3 months ago by Puck

science-based creature-design
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How can elves prevent specialization among their species?

2 answers  ·  last activity 3 months ago by Incognito

biology society xenobiology
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Building an interstellar starship during transit

5 answers  ·  last activity 3 months ago by Adam Reynolds

space travel reality-check spaceships space-travel ships
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Could my Triclops exist?

1 answer  ·  last activity 3 months ago by icewar1908

biology evolution science-based creature-design mythical-creatures
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Effect of Prolonged Egg Diapause on Species

2 answers  ·  last activity 3 months ago by Thalassan

biology genetics
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Could a red tree exist?

6 answers  ·  last activity 3 months ago by RotNDecay

environment biology science-based
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Could Long, Dense Walls of "Megamangroves" Deflect The Deadliest of Storms?

1 answer  ·  last activity 3 months ago by JohnWDailey

weather science-based flora earth alternate-earth
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Time reversal by the means of lightspeed

1 answer  ·  last activity 3 months ago by El El

space travel spaceships time-travel time ships
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Can we safe FTL from paradoxes by using a Multiverse?

5 answers  ·  last activity 3 months ago by mart

science-based faster-than-light light
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What conditions would be necessary to have all of the world's mainland animals be subjected to island gigantism?

3 answers  ·  last activity 3 months ago by Niobium_Sage

science-based fauna apocalypse post-apocalypse
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Stability in Lowering a Space Elevator

1 answer  ·  last activity 3 months ago by Rusty

space reality-check science-based physics space-elevators
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What technologies could be made with the manipulation of quarks?

1 answer  ·  last activity 3 months ago by Shawn

science-based technology nanotechnology science-fiction
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Is it theoreticaly possible to phase shift between alternate universe and/or realities?

3 answers  ·  last activity 3 months ago by Hewholooksskyward

space science-based physics technology science-fiction
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How could an iceberg be created quickly?

2 answers  ·  last activity 3 months ago by George Brewington

science-based physics technology chemistry
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Methods for melting metals in space

3 answers  ·  last activity 3 months ago by Daikael

space science-based technology metalworking
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Can an animal develop a facial disk through muscle and bone alone?

1 answer  ·  last activity 3 months ago by ProjectApex

biology reality-check evolution science-based xenobiology
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How big does a pelican type creature need to be to carry a grown up human inside its mouth and still fly?

1 answer  ·  last activity 3 months ago by Li Jun

biology reality-check physics creature-design xenobiology
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How do I get strong storms on a slow rotator

1 answer  ·  last activity 3 months ago by Aezyc

climate weather
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Magnetic sail on rotating ship

2 answers  ·  last activity 4 months ago by Adam Reynolds

space science-based spaceships generation-ships magnetism ships electromagnetism
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Biology behind a monster that is able to remain invisible

3 answers  ·  last activity 4 months ago by Space_Cadet

biology reality-check creature-design xenobiology
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Anatomically Correct Diclonius

1 answer  ·  last activity 4 months ago by Arbiter Elegante

biology reality-check evolution creature-design
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