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  • Member for 5 years, 2 months
  • Last seen more than a month ago
214 votes
19 answers
19k views

What's the most reasonable way to fit Monsters in your Pocket?

194 votes
18 answers
79k views

How could dragons be explained without magic?

  • 12.2k
153 votes
20 answers
107k views

What is the minimum human population necessary for a sustainable colony?

  • 2,682
144 votes
12 answers
17k views

How do Glass Ants create their tunnels?

  • 65.4k
109 votes
11 answers
32k views

This sword is forged from meteorite iron - but how is that any good?

  • 32.7k
96 votes
13 answers
19k views

A mosque on Mars?

84 votes
15 answers
16k views

How Long Could an "Eternal" Fire Last?

  • 1,049
81 votes
30 answers
45k views

Plausible Reasons for usage of Combat Mecha

74 votes
12 answers
17k views

Is it possible to create a practical sword that's naturally toxic?

  • 14k
74 votes
20 answers
8k views

Taxing the superhero industry

74 votes
8 answers
7k views

How often must carnivorous grassland eat?

  • 65.4k
73 votes
13 answers
15k views

Are flying plants possible?

  • 16.6k
71 votes
28 answers
18k views

How can I prevent the collapse of the Soviet Union?

  • 55.2k
69 votes
11 answers
16k views

Is a pig-mounted cavalry possible?

  • 1,697
67 votes
26 answers
28k views

Would a full body diamond armor and sword guarantee survival and victory against a medieval battalion?

  • 46k
65 votes
29 answers
12k views

What realistic way could limit an FTL drive to only travelling between stars?

64 votes
6 answers
21k views

Other blood colors

  • 55.2k
64 votes
12 answers
7k views

Is there a more effective way to build a language than a word frequency list?

  • 5,016
61 votes
28 answers
14k views

Could extreme climate zones exist next to each other?

59 votes
12 answers
17k views

Is a man-eating plant realistic?

  • 2,919
58 votes
3 answers
27k views

Creating a realistic world map - Currents, Precipitation and Climate

  • 76.1k
58 votes
21 answers
19k views

Are gunswords feasible?

  • 55.2k
54 votes
25 answers
8k views

Lifeform - resistant to gunfire but vulnerable to melee

54 votes
11 answers
11k views

How could mushroom/fungi forests be possible?

52 votes
5 answers
9k views

How long would people live in the US if an immortality treatment was available?

  • 783
51 votes
6 answers
23k views

What does a medieval army cost?

  • 2,087
50 votes
12 answers
8k views

How would you know your floating island was losing altitude?

  • 1,039
50 votes
11 answers
14k views

Could medieval people produce automatic firearms if they had access to the schematics?

  • 10.3k
50 votes
12 answers
7k views

How would a Martian colony be able to celebrate Christmas?

47 votes
23 answers
13k views

What would be best way to re-melt Mars' mantle and core to revive its magnetosphere

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