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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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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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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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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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Feasibility of six inch space-faring aliens

3 answers  ·  last activity 4 months ago by ‭RotNDecay‭

biology reality-check science-based
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Are large meteor craters possible with the survival of most human society?

1 answer  ·  last activity 5 months ago by ‭Cascader‭

reality-check science-based natural-disasters meteor
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How can a massive ship be partially destroyed in reentry, but have the top part still intact?

7 answers  ·  last activity 5 months ago by ‭Topcode‭

space travel spaceships space-travel ships re-entry
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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 large could an aquatic humanoid get?

1 answer  ·  last activity 4 months ago by ‭Praearcturus‭

reality-check science-based creature-design sea sea-creatures humanoid
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Putting together a research expedition to an alien planet - what kind of scientists am I taking with me?

4 answers  ·  last activity 5 months ago by ‭Faz‭

planets scientific-development exploration
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Could a "multicellular" virus exist?

6 answers  ·  last activity 5 months ago by ‭Topcode‭

reality-check science-based fauna creature-design viruses
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How can the effects of a Gene become weaker with each new offspring?

4 answers  ·  last activity 5 months ago by ‭Incognito‭

biology genetics
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What events would trigger linguistic hyper-evolution in a spacefaring civilisation?

1 answer  ·  last activity 5 months ago by ‭System‭

science-based language
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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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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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Making Immobile carnivore

1 answer  ·  last activity 5 months ago by ‭RotNDecay‭

biology evolution science-based
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(Semi) Believable way to quickly submerge a large landmass

3 answers  ·  last activity 5 months ago by ‭Blue Devil‭

geography physics geology tectonics geophysics
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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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How Would Hominids Evolve to a Mountain Environment

1 answer  ·  last activity 5 months ago by ‭Capillary Cumorah ‭

environment climate mountains biology evolution xenobiology
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Is it theoreticaly possible to phase shift between alternate universe and/or realities?

3 answers  ·  last activity 6 months ago by ‭Hewholooksskyward‭

space science-based physics technology science-fiction
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Plausibility of "multi-type transmissible animal cell tumor" to form more complex structures.

0 answers  ·  last activity about 2 months ago by ‭Cazadorro‭

medical animal tumor cell
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Treating Postpartum Depression when Reproductive Mortality is ~100%?

2 answers  ·  last activity 5 months ago by ‭Logan R. Kearsley‭

psychology aliens
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What will the abdominal muscles of non-primate humanoids look like?

2 answers  ·  last activity 5 months ago by ‭Pierre ‭

biology reality-check evolution science-based
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Methods for melting metals in space

3 answers  ·  last activity 6 months ago by ‭Daikael‭

space science-based technology metalworking
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Can a perpetually darkening atmosphere exist and yet still allow life to evolve?

3 answers  ·  last activity 6 months ago by ‭QUESTER42‭

biology atmosphere planets xenobiology
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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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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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What species will benefit most from humanity's having been here?

17 answers  ·  last activity 4 months ago by ‭Henry Taylor‭

biology evolution apocalypse post-apocalypse
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Can we safe FTL from paradoxes by using a Multiverse?

5 answers  ·  last activity 6 months ago by ‭mart‭

science-based faster-than-light light
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How could an ability to project fire from your body occur plausibly?

1 answer  ·  last activity 6 months ago by ‭DEMI‭

biology physics super-powers mutation
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Restricted Directions for an Alcubierre Drive?

2 answers  ·  last activity 2 months ago by ‭lsusr‭

science-based spaceships science-fiction
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How would head shaping affect the ligament attachments of a gorillas skull?

2 answers  ·  last activity 4 months ago by ‭MandaloreUltra‭

biology culture fauna bio-mechanics anatomy
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How can I prevent the invention of skyscrapers?

27 answers  ·  last activity 5 months ago by ‭subdermatoglyphic‭

society science-based cities alternate-history history infrastructure
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What technologies could be made with the manipulation of quarks?

1 answer  ·  last activity 6 months ago by ‭Shawn‭

science-based technology nanotechnology science-fiction
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Without powered greenhouses or trade, what's the coldest possible climate for a sustainable nation?

1 answer  ·  last activity 6 months ago by ‭Mae‭

environment science-based fauna flora
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Would Chemosynthetic plants have any reason to grow tall?

4 answers  ·  last activity 5 months ago by ‭Chickenpeep Chickenpeep‭

science-based flora chemistry biochemistry
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creatures that uses sounds/vibrations as a defense mechanism

2 answers  ·  last activity 6 months ago by ‭user3556983‭

biology fauna zoology
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Binary Star System Build - Alpha Centauri

1 answer  ·  last activity 5 months ago by ‭user72655‭

space planets science-based orbital-mechanics solar-system
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Planet with double the orbital period of Earth

4 answers  ·  last activity 6 months ago by ‭Julianne‭

planets science-based rogue-planets science-fiction
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Are Geologically Dead Planets Habitable?

9 answers  ·  last activity 7 months ago by ‭The Weasel Sagas‭

reality-check planets solar-system habitability
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What laws of physics would need to be broken in order to travel in space faster?

4 answers  ·  last activity 5 months ago by ‭LukeN‭

space travel science-based spaceships space-travel ships science-fiction
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Could a marine plant have a salt-filtration system for when plants suck up the sea-water (providing a source of fresh water?)?

3 answers  ·  last activity 6 months ago by ‭Topsy-Scurvy‭

flora sea health ocean plant-design
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All planets and stars flat, how to bring day and night effect?

1 answer  ·  last activity 7 months ago by ‭Amruth A‭

astronomy
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How large can an animal's eye realistically get?

1 answer  ·  last activity 4 months ago by ‭Praearcturus‭

biology evolution anatomy
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Physiological changes necessary to scale an insect's size up while maintaining a catapult jumping mechanism and jump/body ratio?

1 answer  ·  last activity 7 months ago by ‭Delirium‭

biology aliens creature-design science-fiction xenobiology
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Could a round legless creature be able to move by bouncing?

3 answers  ·  last activity 4 months ago by ‭Chickenpeep Chickenpeep‭

science-based creature-design
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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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Can You Evolve a Second Pair of Pectoral Muscles Without The Need for Flight?

2 answers  ·  last activity 7 months ago by ‭JohnWDailey‭

evolution science-based humans earth anatomy alternate-earth
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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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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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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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