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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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Are firefly-like vertebrates biologically plausible?

4 answers  ·  last activity 2 months ago by user3556983

biology science-based creature-design zoology
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Would a Jungle survive in a highly volcanic area?

1 answer  ·  last activity 2 months ago by Kyrrith

reality-check flora volcanoes
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Temperatures on an Earth with a week-long rotational period

2 answers  ·  last activity 2 months ago by Ryan Williamson

climate reality-check planets
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How could two AIs "battle" within a closed off computer?

1 answer  ·  last activity 2 months ago by Alex

computers intelligence artificial-intelligence
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Where to place an artificial oceanic island?

1 answer  ·  last activity 2 months ago by SilverCookies

geography megastructures gas ocean
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Weakspots of a Humanoid Iguana

3 answers  ·  last activity 2 months ago by sjzjjdjdjsn

science-based creature-design reptiles science-fiction anatomically-correct
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Online Anatomy Creator/Maker..?

2 answers  ·  last activity 2 months ago by WhimsyDoesIt

creature-design software-recommendations anatomy
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how big does my creature's organ need to blind or stun predator of all size?

4 answers  ·  last activity 2 months ago by user3556983

evolution creature-design sea light sea-creatures zoology
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Could my "erect penguins" exist?

1 answer  ·  last activity 2 months ago by icewar1908

biology evolution science-based creature-design
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What if we created a race of humans specialized for islands?

3 answers  ·  last activity 2 months ago by Popplio Lover

biology evolution humans creature-design
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Would it make sense to send potential human colonists on the initial manned expedition to a habitable, Earth-like planet?

5 answers  ·  last activity 2 months ago by Space_Cadet

space travel planets space-travel colonization space-colonization
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What if we created a race of humans specialized for a tundra biome?

1 answer  ·  last activity 2 months ago by Popplio Lover

biology evolution humans creature-design
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How would someone actively search for titanium ores or other minerals?

4 answers  ·  last activity 2 months ago by Wayward Astronaut

technology chemistry mining
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Could the common housefly survive on a diet of various grasses? If not, whats the minimum amount of other species they would need to survive?

1 answer  ·  last activity 2 months ago by Schwefel Kamm

biology evolution
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Rewiring the way one views his kind

4 answers  ·  last activity 2 months ago by ProjectApex

psychology
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How much volume does a liquefied human take?

8 answers  ·  last activity 2 months ago by Seraphim

biology mathematics
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Superhuman: Extreme Temperatures Pt.2

1 answer  ·  last activity 2 months ago by WhimsyDoesIt

biology temperature super-powers bio-mechanics body-modification
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What would it take to get the temperature of the human body to rise to 3,000 °F?

1 answer  ·  last activity 2 months ago by WhimsyDoesIt

biology temperature super-powers bio-mechanics body-modification
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Where would a technologically advanced group of people forced into space by a calamity obtain water from?

7 answers  ·  last activity 2 months ago by Niobium_Sage

space travel water space-travel food colonization space-colonization shipbuilding
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What will the abdominal muscles of non-primate humanoids look like?

2 answers  ·  last activity 2 months ago by Pierre

biology reality-check evolution science-based
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What percentage of stars would need to become Shkadov thrusters to move the whole galaxy?

1 answer  ·  last activity 2 months ago by RandySavage

space gravity megastructures gas galactic
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Would would occur if a person travelled from a wormhole in flat empty space, to one on Earth?

1 answer  ·  last activity 2 months ago by MrKred

space travel space-travel wormholes interstellar-travel interstellar
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What is the force of impact for a failing space elevator given the following conditions?

2 answers  ·  last activity 2 months ago by MUSE-42

space science-based technology space-constructs space-elevators
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How would one detect a black hole when there are no more light sources for it to refract?

5 answers  ·  last activity 2 months ago by In the name of the story

space travel spaceships space-travel black-holes ships science-fiction
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Is the existence of vertically shaped pupils, with a hawk eyesight, biologically possible?

1 answer  ·  last activity 2 months ago by Mike

biology races fantasy-races
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I want ten Earth-years long day on my planet. Can I have it?

6 answers  ·  last activity 2 months ago by Zjerzy

climate planets day-night orbital-mechanics
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Why would a sleeper ship be designed to only wake one person in case of emergency?

36 answers  ·  last activity 2 months ago by Joe Bloggs

space travel space-travel colonization cryogenics
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How can I make the supporting pillars of an underground city less obstructive?

22 answers  ·  last activity 2 months ago by Mephistopheles

science-based underground architecture engineering
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Specific gravity change for my world

0 answers  ·  last activity 2 months ago by NRJohnson

gravity mathematics science-fiction
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Are there *plausible* planetary conditions where jet aircraft just don't have much advantage over propeller-driven aircraft?

2 answers  ·  last activity 2 months ago by Tristan Klassen

atmosphere science-based vehicles
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Plausibility of a six limbed, four legged giant

2 answers  ·  last activity 2 months ago by The Humbug

biology science-based creature-design xenobiology
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Is my planet realistic?

4 answers  ·  last activity 2 months ago by LonelyCryptid

reality-check planets solar-system
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Humanity is doomed because of succubi

2 answers  ·  last activity 2 months ago by Kay

evolution humans survival
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Creature that increases its own lifespan by killing other animals

1 answer  ·  last activity 2 months ago by Kay

reality-check creature-design immortality anatomy anatomically-correct
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What might cause a civilization to be unable to colonize a large moon but live in space stations around it instead?

25 answers  ·  last activity 2 months ago by Topcode

space science-based moons colonization space-colonization
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Net shift of humans towards introversion?

2 answers  ·  last activity 2 months ago by subdermatoglyphic

reality-check society science-based psychology humans
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What is the tallest mountain possible in any gravitational environment?

2 answers  ·  last activity 2 months ago by Slarty

planets science-based physics gravity alternate-worlds
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What laws of physics would need to be broken in order to travel in space faster?

4 answers  ·  last activity 2 months ago by LukeN

space travel science-based spaceships space-travel ships science-fiction
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What events would trigger linguistic hyper-evolution in a spacefaring civilisation?

1 answer  ·  last activity 2 months ago by System

science-based language
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The most suitable martial art for birdpeople?

6 answers  ·  last activity 2 months ago by Mephistopheles

science-based martial-arts
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How much energy would be needed for a sentient plant species

1 answer  ·  last activity 2 months ago by RotNDecay

reality-check science-based flora
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Would it be possible to build numerous spaceships that could transport 10 million people in the late 2100's?

2 answers  ·  last activity 2 months ago by Niobium_Sage

space travel reality-check spaceships space-travel food space-constructs ships
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Binary Star System Build - Alpha Centauri

1 answer  ·  last activity 2 months ago by user72655

space planets science-based orbital-mechanics solar-system
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What binary poisons could work when ingested?

5 answers  ·  last activity 3 months ago by Mais

science-based chemistry poisons low-fantasy
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Could a "multicellular" virus exist?

6 answers  ·  last activity 3 months ago by Topcode

reality-check science-based fauna creature-design viruses
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toilet for mermaid?

2 answers  ·  last activity 3 months ago by Li Jun

science-based technology races mythical-creatures fantasy-races furniture
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How much brain power per KG/volume?

3 answers  ·  last activity 3 months ago by Demigan

biology computers
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Despite almost zero energy consumption why does my spaceship scheduled cryostasis in shifts?

12 answers  ·  last activity 3 months ago by user6760

space travel technology space-travel cryogenics
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Meteorological consequences of walls reaching into the sky, enclosing a large area

1 answer  ·  last activity 3 months ago by Mark Gardner

weather reality-check science-based megastructures gas
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Through Uterus/Reproductive System

4 answers  ·  last activity 3 months ago by Aezyc

reality-check evolution creature-design reproduction anatomy
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