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Reasons for a colony to use Arcologies

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4 answers
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What would crops and livestock look like if farmers tended to breed the least desirable members of their crops and livestock?

16 votes
19 answers
8k views

What could cause a society to collectively forget about an event?

10 votes
6 answers
2k views

designing an elven magic system that blends with a WW1-esque world

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1 answer
33 views

Can a Dragon carry a human?

8 votes
8 answers
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How do floating plants get their trace nutrients?

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Could an exomoon be bombarded by electromagnetic radiation from its parent gas giant and still be habitable enough for life to evolve?

8 votes
2 answers
199 views

Sky color other than blue

2 votes
4 answers
407 views

Evidence of lightning-caused mass extinction

19 votes
6 answers
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Stealth In Space Calculator

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30 views

How many miles/km of tunnels would be required to replace all airports in the world

7 votes
4 answers
506 views

Would the equatorial region on an alternative Earth spinning on two axes still be +/- 5° above the median "equator?"

2 votes
2 answers
88 views

How to calculate the surface area of a lake in an endorheic basin, where evaporation is the only "outflow"

7 votes
11 answers
2k views

How can I record pain during a ritual sacrifice in my fantasy world?

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