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Worldbuilding
Carl Witthoft
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24 Answers

Newest Activity Votes
27
How many people are necessary to maintain modern civilisation?
Jun 17 at 18:18
12
Biological refrigeration?
Aug 26 at 19:06
12
How to supply water to a coastal desert town with no rain and no freshwater aquifers?
Jul 2 at 17:31
6
The first McDonald's restaurant on Mars
Oct 29 '18 at 13:26
4
Creating Darkness
Jul 26 at 14:18
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
Designing a time thief proof safe
Sep 20 at 15:54
2
Underground Base
Jul 17 at 17:50
2
Odd-Toed Ungulates
Jul 1 at 17:56
2
Is acid blood possible?
Jun 14 at 15:28
2
How could polycephaly evolve as a byproduct of natural selection?
Feb 8 '18 at 18:54
1
How does targeting teleportation work without a pad or something?
Jul 12 at 14:59
1
Firearm ammunition surviving 200 years
Jun 14 at 15:23
1
How to protect your ship against TW-range lasers?
Jun 18 '18 at 18:56
0
Requirements for melting snow from orbit using EM radiation
Aug 2 at 16:58
0
The Giant Roc and Pulse Jet propulsion
Jul 12 at 14:53
0
How could a tree survive a volcanic blast?
Jun 17 at 18:20
0
How can sex lead to a boost in performance for competitive sports?
Jun 12 at 18:09
0
What would a Dragon have to exhale to cause rain?
May 15 at 12:04
0
How could indestructible materials be used in power generation?
Apr 4 at 17:33
0
Is there a single historic event which could be changed to cause the USA to use SI units?
Oct 19 '18 at 13:49
0
What could make a planet more radioactive at night?
May 14 '18 at 18:06
-1
How can a twin on Earth grow old slower than his/her twin sibling?
Jul 23 at 19:01
-1
How to make money from a browser who sees 5 seconds into the future of any web page?
Mar 22 at 11:57