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In what circumstances, if any, would clones or cyborgs be more efficient than robots?

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TheDemonLord
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42 views

Do Forbidden Lines in Stars Often Come in Groups

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Neil Iyer
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0 answers
36 views

Name for a Chinese colony-turned-state on Mars [closed]

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Ventifacts and Yardangs
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1 answer
128 views

Advice/Feedback on building a working Ocean Current model for my fictional world

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TripleShield
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5 answers
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Sci-fi soldiers with bulky armor brace their rifles on their chest plates. What do their rifle stocks look like?

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Nosajimiki
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1 answer
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Red Dwarf Gas Giant Moons?

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KEY_ABRADE
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Possibility of forced labour on a comet

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automaton
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1 answer
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What is required to support a 1950's era society? [closed]

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AlexP
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35 views

How powerful does an electric field have to be to turn any matter into a plasma

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user357329
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0 answers
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Can a third cylinder/sub-cylinder be added to the O'neil cylinder considering that it has its own gravity and rotation? [closed]

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NISHANT JHUNJHUNWALA
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12 votes
8 answers
3k views

Can lenses defend against lasers in space combat?

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Nosajimiki
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4 votes
1 answer
160 views

What is different about nocturnal humans' European manor houses?

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flox
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2 votes
3 answers
111 views

Is it plausible for a landmass to shatter in a tectonic/volcanic cataclysm?

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David R
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8 votes
15 answers
7k views

My Medieval kingdom has birth control, why is the population so high?

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JBH
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2 answers
297 views

Animals with fur that fluoresces under UV, and a star with high UV levels--how dramatic is the affect, and how badly would it mess up camouflage?

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The Square-Cube Law
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1 answer
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What could cause super-strong hair?

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Fictotum
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3 answers
423 views

How would you prosecute crimes in a world where everyone regenerates from injuries?

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Kilisi
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8 answers
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Space-ships and stations...made from cast-iron?

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barbecue
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28 views

Explosive Plant/Chemotrophs [duplicate]

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Evangel
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377 views

How close can a yellow hypergiant be to not affect a star system but also be important to the locals mythology

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The Square-Cube Law
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75 views

I've built a UFO, now what? [closed]

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Alma Do
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7 votes
9 answers
4k views

An atmosphere that gets denser with increasing altitude, to support these flying creatures

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Nathaniel Ford
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5 answers
185 views

How can I make the lowest plane of existence in my novel relevant and important? [closed]

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Mary
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1 answer
78 views

How to prevent radioisotopes from entering the crust of a rocky planet

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The Square-Cube Law
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0 answers
48 views

How would I create an unique thrusting based weapon that would function underwater? [closed]

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Xenovion
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0 answers
36 views

How would a massive underground cavern form? [duplicate]

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Inactive.
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4 votes
3 answers
316 views

Effects of breaking down the oceans plastic within 5 years [closed]

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Krišjānis Liepiņš
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11 votes
9 answers
4k views

Can 21 sports kits be visually distinct?

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William
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3 votes
3 answers
624 views

The late-victorian nuclear-thruster

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Richard Kirk
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0 answers
87 views

How much radioisotope must be present in planet's crust to be found in usable amounts?

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Bedlasky
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11 votes
3 answers
2k views

Rogue RKKV impacts the Moon

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Monty Wild♦
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0 votes
0 answers
98 views

How powerful can I make a character that controls electric fields [closed]

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user357329
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12 votes
5 answers
3k views

How long would it take for a Japanese-style castle to burn to the ground?

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Jay Sparks
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5 votes
5 answers
2k views

How big would a dog like the one described need to be to survive an attack by the big cat I’ve described?

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Russell McMahon
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15 votes
7 answers
5k views

Will a Humans Tolerance Keep Going Until Full Immunity?

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Lawnmower Man
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3 answers
99 views

What tissue / organ is most vulnerable to an attack from nanites? [closed]

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Demigan
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3 votes
6 answers
367 views

How to keep a city floating beneath the surface of an exoplanet's ocean in place?

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Negdo
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14 votes
12 answers
4k views

How long would it take for a civilization to forget how it began?

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GrimmReaper18B
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1 answer
114 views

What will happen to nuclear power stations / reactors if chain reaction suddenly stops to provide energy?

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L.Dutch♦
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87 views

What kind of technology could humans possess by 9700 CE in a world like this? [closed]

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Godzilla Louise
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1 answer
215 views

Can 'prions' help me avoid a genetic engineering temporal paradox?

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Monty Wild♦
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9 votes
3 answers
2k views

Will my Hydra sink into the bog?

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Shojo Dagger
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3 answers
178 views

How much time would it take to build a small medieval city/village/town with a wall surrounding it? [closed]

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ShadowOfHassen
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15 votes
17 answers
4k views

How can we meet aliens in an underpopulated galaxy?

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Gree
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6 votes
1 answer
883 views

Could humanoid life survive the violent formation of a planetary ring system?

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jdunlop
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0 answers
50 views

How would the current world react to a sudden ice age? [closed]

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GrimmReaper18B
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13 votes
5 answers
3k views

Is it possible for an artesian basin to go underneath a shallow sea while still being freswater?

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Slarty
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6 votes
6 answers
2k views

How possible is a habitable, liquid ocean-planet at temperatures below 0°C?

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LetEpsilonBeLessThanZero
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