Worldbuilding
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Carl Witthoft
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48 Answers

Votes Activity Newest
27
How many people are necessary to maintain modern civilisation?
Jun 17 '19 at 18:18
15
Is it possible for a planet to have the same seasons in both hemispheres?
May 21 at 14:20
13
How to supply water to a coastal desert town with no rain and no freshwater aquifers?
Jul 2 '19 at 17:31
12
How Would I Make an Oceanless World Feasible?
Apr 2 at 17:31
12
Biological refrigeration?
Aug 26 '19 at 19:06
10
Why would a sleeper ship be designed to only wake one person in case of emergency?
Apr 24 at 14:24
8
How much volume does a liquefied human take?
Apr 28 at 15:38
6
The first McDonald's restaurant on Mars
Oct 29 '18 at 13:26
5
Shooting through the earth
May 20 at 13:17
5
How Can An Alien Ship Harness Nuclear Energy?
May 12 at 13:47
5
Reality Check on Forest Placement
Feb 5 at 16:20
4
Anatomically Correct Creatures that can't be effectively dispatched with guns, but only swords, spears, clubs, quarterstaffs and their like
Jul 22 at 13:27
4
Creating Darkness
Jul 26 '19 at 14:18
3
Could somebody get temporarily stuck/“glued” to a wall by way of energy or some other force?
Mar 5 at 16:03
3
How would a Grey Goo robot compute given that it has no fixed form?
Feb 5 at 16:24
3
In what era or tech level in earth's history did people have the ability to cross a super-earth's ocean 50,000 km wide?
May 3 '18 at 14:45
2
How would normal colors be affected if a planet's atmosphere was green?
Mar 5 at 16:13
2
Designing a time thief proof safe
Sep 20 '19 at 15:54
2
Underground Base
Jul 17 '19 at 17:50
2
Odd-Toed Ungulates
Jul 1 '19 at 17:56
2
Is acid blood possible?
Jun 14 '19 at 15:28
2
How could polycephaly evolve as a byproduct of natural selection?
Feb 8 '18 at 18:54
1
A sound reason for vampires to be weak to sunlight?
Mar 24 at 17:09
1
Where do producers get nutrients in an airborne ecology?
Jan 28 at 15:07
1
Skysteading: How to build a flying city
Jan 3 at 14:56
1
How does targeting teleportation work without a pad or something?
Jul 12 '19 at 14:59
1
Firearm ammunition surviving 200 years
Jun 14 '19 at 15:23
1
How to protect your ship against TW-range lasers?
Jun 18 '18 at 18:56
0
Biplanes landing on top of skyscrapers by means of a wind tunnel in retro-future Earth
Sep 18 at 12:00
0
Would a sapient being sensitive to polarized light be able to see the angle of polarization in a photograph?
May 26 at 13:58
1
2