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0 votes
1 answer
23 views

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

0 votes
0 answers
24 views

Space-ships and stations...made from cast-iron?

1 vote
2 answers
61 views

What kind of physique would a Voswuinian Mastiff need to fight a Voswuinian Liguar in the way described?

3 votes
2 answers
151 views

Biped species with trunk evolved to use for locomotion

4 votes
7 answers
2k views

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

4 votes
4 answers
2k views

Frozen Star- Red dwarf goes supernova, just because I froze it?

14 votes
17 answers
8k views

A weapon to kill angels

5 votes
2 answers
177 views
+50

Could plants orbiting an active enough star (one that’s around F-type) evolve photo-voltaic cells as the star “calms down”?

12 votes
5 answers
3k views

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

6 votes
3 answers
204 views

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

3 votes
1 answer
163 views

Visibility of My "Psuedo-Aurorae"

11 votes
3 answers
2k views

Rogue RKKV impacts the Moon

14 votes
12 answers
4k views

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

4 votes
8 answers
2k views

Will this super flying brick meet his identical copy in another universe?

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