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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
71%
+3 −0
Wings going from locomotive purposes in juveniles to sexual purposes in adults, plausible?

0 answers  ·  last activity 11 days ago by ‭Lundin‭

evolution sex species
71%
+3 −0
How do I realistically keep my large mammalian predator hidden from other pack hunters.

3 answers  ·  last activity 17 days ago by ‭Lundin‭

biology creature-design mammals abilities
66%
+2 −0
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
75%
+4 −0
Magnet strong enough to rip the iron out of your body feasible?

2 answers  ·  last activity about 1 month ago by ‭DonielF‭

biology magnetism electromagnetism
55%
+3 −2
How to Terraform a Dead Earth

1 answer  ·  last activity about 2 months ago by ‭Olin Lathrop‭

science-based terraforming science-fiction alternate-earth
71%
+3 −0
Would a 200-Pound Dwarf Still Need to Wear Clothing?

1 answer  ·  last activity 2 months ago by ‭pnuts‭

biology science-based adaptability humanoid alternate-earth
71%
+3 −0
Avoiding Incidental Ion Drive damage to Following Vehicles?

2 answers  ·  last activity 2 months ago by ‭dmckee‭

space-travel ion drive
81%
+7 −0
Would a huge amount of asteroids hitting Earth change its rotation speed or destroy the planet?

1 answer  ·  last activity 3 months ago by ‭HDE 226868‭

asteroids earth
77%
+5 −0
How efficient can a Dyson sphere be?

0 answers  ·  last activity 3 months ago by ‭HDE 226868‭

physics dyson-spheres megastructures energy materials
75%
+4 −0
Competently Mobile Photosynthetic Animal?

1 answer  ·  last activity 3 months ago by ‭Cazadorro‭

biology science-based plant animal
81%
+7 −0
Is it possible to create a beam of non-relativistic neutrinos?

1 answer  ·  last activity 3 months ago by ‭dmckee‭

physics technology relativity particle-physics
75%
+4 −0
What conditions would cause an extremely dense (dark) coniferous forest to grow?

1 answer  ·  last activity 4 months ago by ‭Olin Lathrop‭

climate forestry ecology
66%
+4 −1
Black as color of magic

2 answers  ·  last activity 3 months ago by ‭Aliza‭

vision colors
50%
+0 −0
Would caves in general be practical lairs for a dragon?

1 answer  ·  last activity 4 months ago by ‭Mephistopheles‭

science-based dragons
50%
+0 −0
How could the display technology of self-rewriting books work?

1 answer  ·  last activity 4 months ago by ‭Mephistopheles‭

science-based computers robots optics
60%
+1 −0
Could my leviathans exist?

1 answer  ·  last activity 4 months ago by ‭icewar1908‭

biology reality-check evolution science-based creature-design
71%
+3 −0
Restricted Directions for an Alcubierre Drive?

2 answers  ·  last activity 2 months ago by ‭lsusr‭

science-based spaceships science-fiction
50%
+0 −0
Exclusively underground creature experiencing sun-light for the first-time

3 answers  ·  last activity 4 months ago by ‭Prahara‭

biology reality-check xenobiology
50%
+0 −0
Can a Slime run?

4 answers  ·  last activity 4 months ago by ‭Murray‭

biology science-based creature-design alternate-reality
50%
+0 −0
Cons of Antimatter Weaponry

6 answers  ·  last activity 4 months ago by ‭Dawnfire‭

science-based antimatter power-sources weapon-mass-destruction science-fiction
50%
+0 −0
Could complex Precambrian life be possible?

1 answer  ·  last activity 4 months ago by ‭Daikyu Maryu‭

biology time science-fiction prehistoric-times life
50%
+0 −0
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
60%
+1 −0
Can a galaxy be formed from a black hole?

3 answers  ·  last activity 4 months ago by ‭01e5Dk‭

space reality-check black-holes galactic
50%
+0 −0
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
50%
+0 −0
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
50%
+0 −0
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
50%
+0 −0
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
50%
+0 −0
Detection systems and trigger mechanism in a pre-electronic world?

5 answers  ·  last activity 4 months ago by ‭Trismegistus‭

technology engineering detection pneumatic
66%
+2 −0
How large would be the habitable area in a tidally locked planet?

2 answers  ·  last activity 4 months ago by ‭Mister Onion‭

planets
50%
+0 −0
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
50%
+0 −0
Could a creature use lightning/electricity as its energy supply?

1 answer  ·  last activity 4 months ago by ‭AlexT‭

biology science-based creature-design
50%
+0 −0
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
50%
+0 −0
Could penguins evolve to have fingers?

1 answer  ·  last activity 4 months ago by ‭Thormind‭

biology evolution creature-design avian
50%
+0 −0
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
50%
+0 −0
recreational drug specifically for reptile?

2 answers  ·  last activity 4 months ago by ‭Li Jun‭

science-based reptiles pharmacology
50%
+0 −0
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
50%
+0 −0
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
66%
+2 −0
Do seasons occur on a tidally-locked planet?

4 answers  ·  last activity 4 months ago by ‭HDE 226868‭

astronomy planets seasons astrophysics tidally-locked
50%
+0 −0
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
50%
+0 −0
Giant velvet mites?

0 answers  ·  last activity 4 months ago by ‭Praearcturus‭

biology science-based insects
60%
+1 −0
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
50%
+0 −0
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
50%
+0 −0
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
60%
+1 −0
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
50%
+0 −0
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
50%
+0 −0
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
50%
+0 −0
A creature with a built in flashlight

2 answers  ·  last activity 4 months ago by ‭Chickenpeep Chickenpeep‭

biology creature-design
50%
+0 −0
Could we build a roof over the Grand Canyon?

2 answers  ·  last activity 4 months ago by ‭Appleguysnake‭

reality-check science-based technology engineering
50%
+0 −0
Could a galaxy of Nicoll-Dyson beams hit a single target?

2 answers  ·  last activity 4 months ago by ‭RandySavage‭

physics megastructures gas galactic
50%
+0 −0
A light tower based communication system

5 answers  ·  last activity 4 months ago by ‭Mister Onion‭

science-based communication
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