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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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Exclusively underground creature experiencing sun-light for the first-time

3 answers  ·  last activity about 2 months ago by Prahara

biology reality-check xenobiology
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Water & Nutrient Cycle of an upside down forest

7 answers  ·  last activity about 2 months ago by Nosajimiki - Reinstate Monica

water flora megastructures gas soil water-cycle
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Can a Slime run?

4 answers  ·  last activity about 2 months ago by Murray

biology science-based creature-design alternate-reality
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How would Humans change, or evolve, to being Domed for many thousands of years?

2 answers  ·  last activity about 2 months ago by Hunt Castle

biology evolution humans apocalypse post-apocalypse
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What evolutionary pressures would lead to solitary hominids?

2 answers  ·  last activity about 2 months ago by icewar1908

biology evolution science-based races fantasy-races hominid
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What anatomical changes would you need to get 1 ton ride-able rodent?

2 answers  ·  last activity about 2 months ago by Failus Maximus

biology domestication creature-design xenobiology anatomy
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What needs to be changed about the plate tectonics of my world?

1 answer  ·  last activity about 2 months ago by devendoo

geography map-making tectonics
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Could complex Precambrian life be possible?

1 answer  ·  last activity about 2 months ago by Daikyu Maryu

biology time science-fiction prehistoric-times life
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How can my reptile like creature spray blood from its eyes containing Capsaicin?

2 answers  ·  last activity about 2 months ago by user3556983

science-based creature-design reptiles zoology
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A creature with a built in flashlight

2 answers  ·  last activity about 2 months ago by Chickenpeep Chickenpeep

biology creature-design
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If the Earth would break apart, how likely would the large debris stay in orbit?

2 answers  ·  last activity about 2 months ago by SKKennell

reality-check gravity apocalypse post-apocalypse earth science-fiction alternate-earth
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Can a galaxy be formed from a black hole?

3 answers  ·  last activity about 2 months ago by 01e5Dk

space reality-check black-holes galactic
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Could a Monotreme Griffin exist?

1 answer  ·  last activity about 2 months ago by icewar1908

biology reality-check evolution creature-design mythical-creatures
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How feasible would gliders or the like be on a flat plain, with no cliffs to launch from?

6 answers  ·  last activity about 2 months ago by AlexT

science-based technology
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Detection systems and trigger mechanism in a pre-electronic world?

5 answers  ·  last activity about 2 months ago by Trismegistus

technology engineering detection pneumatic
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How can I expand the definition and some specifics of pyrokinesis?

6 answers  ·  last activity about 2 months ago by quarterEpsilon

physics temperature super-powers fire
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With as much scientific accuracy as possible, how would chemicals injected in one's body be removed?

7 answers  ·  last activity about 2 months ago by scriptyshake

science-based chemistry science-fiction near-future dystopia biochemistry future
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How large would be the habitable area in a tidally locked planet?

2 answers  ·  last activity about 2 months ago by Mister Onion

planets
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Could special relativity be caused by aliens jamming the Solar System?

8 answers  ·  last activity about 2 months ago by o0'.

space travel science-based space-travel relativity
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Could a creature use lightning/electricity as its energy supply?

1 answer  ·  last activity about 2 months ago by AlexT

biology science-based creature-design
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Megamangrove Roots--Which Kind of Aerial Roots Would Best Support Their Large Size?

1 answer  ·  last activity about 2 months ago by JohnWDailey

science-based adaptability earth alternate-earth plant-design
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Could Sharks Survive a Longer PETM?

1 answer  ·  last activity about 2 months ago by JohnWDailey

science-based adaptability time earth alternate-history history prehistoric-times alternate-earth
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anatomy or musculature to achieve full rotate jaw?

7 answers  ·  last activity about 2 months ago by Li Jun

biology reality-check science-based creature-design anatomy
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Could penguins evolve to have fingers?

1 answer  ·  last activity about 2 months ago by Thormind

biology evolution creature-design avian
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To carry a person in its palm (like King Kong) how much pressure and at what speed would a kaiju need to apply?

2 answers  ·  last activity about 2 months ago by Luke Duffy

biology physics gravity kaiju
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recreational drug specifically for reptile?

2 answers  ·  last activity about 2 months ago by Li Jun

science-based reptiles pharmacology
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biologically or anatomically is there a problem with this type of double mouth or jaws?

5 answers  ·  last activity about 2 months ago by Li Jun

biology reality-check science-based creature-design anatomy
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Would a sapient being sensitive to polarized light be able to see the angle of polarization in a photograph?

7 answers  ·  last activity about 2 months ago by user2352714

biology light anatomy photography
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How long can a human body function at safe levels in slightly higher and lower gravity?

1 answer  ·  last activity about 2 months ago by RandySavage

biology gravity
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Why haven't scientists found evidence of humans interbreeding with aliens?

6 answers  ·  last activity about 2 months ago by Arbiter Elegante

biology reproduction genetics archaeology xenobiology species
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Giant velvet mites?

0 answers  ·  last activity about 2 months ago by Praearcturus

biology science-based insects
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What would encourage multiple animal species to evolve human features simultaneously?

8 answers  ·  last activity about 2 months ago by Lizardsaurus

reality-check evolution genetic-engineering engineering ecology far-future future
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Are these traits for my planet mathematically accurate? Could it support life?

2 answers  ·  last activity about 2 months ago by Praearcturus

reality-check planets science-based habitability
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is it possible for quadrupedal or hexapodal flying monster to fly well while their limbs retracted?

2 answers  ·  last activity about 2 months ago by Li Jun

biology science-based creature-design xenobiology anatomy
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How to discretely sustain a plasma life-form?

3 answers  ·  last activity about 2 months ago by RandySavage

technology magnetism energy
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Earth-sized Moon with Host Planet launched from Star System

4 answers  ·  last activity about 2 months ago by user76027

biology planets moons orbital-mechanics rogue-planets xenobiology
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A light tower based communication system

5 answers  ·  last activity about 2 months ago by Mister Onion

science-based communication
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Could we build a roof over the Grand Canyon?

2 answers  ·  last activity about 2 months ago by Appleguysnake

reality-check science-based technology engineering
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Could a galaxy of Nicoll-Dyson beams hit a single target?

2 answers  ·  last activity about 2 months ago by RandySavage

physics megastructures gas galactic
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More Human-Like Secretary Birds

1 answer  ·  last activity about 2 months ago by Failus Maximus

biology avian anatomy
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Proportions of a giant humanoid?

2 answers  ·  last activity about 2 months ago by Praearcturus

biology reality-check science-based anatomy humanoid
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Most efficient actinopterygian jaw structure?

2 answers  ·  last activity about 2 months ago by Praearcturus

biology skeletons anatomy zoology
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Is it feasible to have an oxidizing planetary atmosphere without the presence of an organic photosynthesis of some kind on the planet?

1 answer  ·  last activity about 2 months ago by RosesBouquet

atmosphere oxygen photosynthesis carbon-based
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Anatomically correct quadrupedal arthropod?

1 answer  ·  last activity about 2 months ago by Praearcturus

biology insectoid science-based anatomy anatomically-correct
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A virus that can mutate a human body into having insane strength and dexterity

4 answers  ·  last activity about 2 months ago by Reaps

evolution zombies mutation mutants body-modification
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Is this a reasonable way to enforce a ban on exotic weapons in an interstellar setting?

3 answers  ·  last activity about 2 months ago by TheDyingOfLight

space politics colonization space-colonization weapon-mass-destruction science-fiction
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Properties of an Argon based gas giant

1 answer  ·  last activity about 2 months ago by RMurphy-Keith

atmosphere planets gas-giants gas
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Could a creature using electromagnetic forces or something to do with ions fly?

2 answers  ·  last activity about 2 months ago by Chickenpeep Chickenpeep

science-based creature-design magnetism electromagnetism
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How would hands or hand-like appendages evolve from ray-finned fishes?

1 answer  ·  last activity about 2 months ago by Double_S

evolution skeletons far-future anatomy future
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An alternative way to rotate or in this case rolltate

5 answers  ·  last activity about 2 months ago by Nanoshadow

climate astronomy physics solar-system alternate-reality
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