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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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If an ET has caramel blood, what it implies?

1 answer  ·  last activity 4 months ago by ‭raiden‭

biology science-based aliens creature-design xenobiology
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What organs or modification needed to have tree that gain energy from lightning or electricity?

5 answers  ·  last activity 4 months ago by ‭Li Jun‭

biology science-based flora xenobiology plant-design
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Would caves in general be practical lairs for a dragon?

1 answer  ·  last activity 4 months ago by ‭Mephistopheles‭

science-based dragons
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How could the display technology of self-rewriting books work?

1 answer  ·  last activity 4 months ago by ‭Mephistopheles‭

science-based computers robots optics
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Cons of Antimatter Weaponry

6 answers  ·  last activity 4 months ago by ‭Dawnfire‭

science-based antimatter power-sources weapon-mass-destruction science-fiction
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Could my leviathans exist?

1 answer  ·  last activity 4 months ago by ‭icewar1908‭

biology reality-check evolution science-based creature-design
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Exclusively underground creature experiencing sun-light for the first-time

3 answers  ·  last activity 4 months ago by ‭Prahara‭

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

7 answers  ·  last activity 4 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 4 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 4 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 4 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 4 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 4 months ago by ‭devendoo‭

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

1 answer  ·  last activity 4 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 4 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 4 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 4 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 4 months ago by ‭01e5Dk‭

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

1 answer  ·  last activity 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 months ago by ‭Luke Duffy‭

biology physics gravity kaiju
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recreational drug specifically for reptile?

2 answers  ·  last activity 4 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 4 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 4 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 4 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 4 months ago by ‭Arbiter Elegante‭

biology reproduction genetics archaeology xenobiology species
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Giant velvet mites?

0 answers  ·  last activity 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 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 4 months ago by ‭RandySavage‭

physics megastructures gas galactic
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More Human-Like Secretary Birds

1 answer  ·  last activity 4 months ago by ‭Failus Maximus‭

biology avian anatomy
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Proportions of a giant humanoid?

2 answers  ·  last activity 4 months ago by ‭Praearcturus‭

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

2 answers  ·  last activity 4 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 4 months ago by ‭RosesBouquet‭

atmosphere oxygen photosynthesis carbon-based
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Anatomically correct quadrupedal arthropod?

1 answer  ·  last activity 4 months ago by ‭Praearcturus‭

biology insectoid science-based anatomy anatomically-correct
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