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user98816
  • Member for 1 year, 6 months
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30 votes
17 answers
7k views

Are there ethical ways to profit from uplifting?

27 votes
4 answers
6k views

Would extracting hydrogen from the sun lessen its lifespan?

18 votes
14 answers
3k views

Are artificial genes discernible from natural ones?

16 votes
15 answers
3k views

Justifying why a nanoassembler can only produce inorganic things

14 votes
15 answers
2k views

Designing a portable space elevator

14 votes
16 answers
5k views

Justifying why mind uploading destroys the brain

13 votes
7 answers
4k views

What genetic enhancements would maximise “luck” in humans? [closed]

13 votes
17 answers
3k views

Why do pantropy (genetically modified humans) and terraforming both exist?

12 votes
6 answers
2k views

Under what conditions could a gold planet form?

12 votes
8 answers
2k views

Minimising the environmental effects of my dyson brain

12 votes
5 answers
3k views

Could aquatic aliens use bubbles in microscopes?

11 votes
5 answers
2k views

How fast does this planet have to rotate to have gravity thrice as strong at the poles?

11 votes
2 answers
5k views

Could a planet have 1/2 the Earth’s mass but 1 g surface gravity?

11 votes
13 answers
3k views

How would a holographic “touch-screen” work?

10 votes
3 answers
697 views

Is it a good idea to harvest the sun to terraform Venus?

9 votes
14 answers
3k views

How do we create an interstellar communications system?

9 votes
1 answer
2k views

How could crustaceans evolve lungs?

9 votes
15 answers
687 views

Explaining the need for human representatives in an AI controlled society

8 votes
5 answers
2k views

Would a brain transplant suffer immunorejection if the new body was cloned from the original?

8 votes
4 answers
2k views

How can I get a huge Saturn-like ringed moon in the sky?

8 votes
8 answers
2k views

What would the easiest planet to terraform look like?

8 votes
7 answers
5k views

How can I deliver 4 x10^19 kg of hydrogen to a planet in 30 years?

7 votes
4 answers
983 views

Would a rotating habitat work on the surface of a moon?

7 votes
4 answers
1k views

What do Titanians drink instead of alcohol?

7 votes
7 answers
2k views

Creating a second earth: How to make a continent?

7 votes
11 answers
5k views

Could a race with 20th century computer technology plausibly develop general-purpose AI?

6 votes
4 answers
712 views

Why would bioluminescence evolve in a Europa-like world?

6 votes
4 answers
639 views

How long is a terraformed mars likely to remain habitable without plate tectonics?

6 votes
5 answers
2k views

Creating a supercomputer powered by tidal heating

6 votes
4 answers
467 views

Maximum size for this dome habitat

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