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58 Answers

Votes Activity Newest
3
Epidemic friendly time traveller
Mar 13 '20 at 13:21
0
Would human civilization develop at a slower pace if Earth was 5.8x larger?
Mar 13 '20 at 8:33
1
Unworkable metal
Mar 12 '20 at 19:32
-1
How many people can live on planet Earth?
Jan 2 '20 at 10:28
0
What would cause vast differences in lifespans between the sexes?
Dec 22 '19 at 10:02
1
If I have an Earth-like world with Earth-like fauna, and I want brightly-colored mammals, what would be a realistic way of causing that to evolve?
Nov 26 '19 at 9:23
-2
What is the minimum earth population required to keep up the current technologic state of the art long term?
Nov 5 '19 at 9:09
0
How would a civilization without reading and writing develop general-purpose computers?
Nov 5 '19 at 6:36
0
Could an all-male society exist?
Sep 24 '19 at 16:00
0
Beyond Futuristic Technology for an Alien Warship?
Sep 24 '19 at 13:08
1
How could a planet have one hemisphere way warmer than the other without the planet being tidally locked?
Sep 7 '19 at 16:05
0
Can a mammal and Oviparous have child together if they have similar external body structure?
Aug 1 '19 at 23:08
0
How to check what is edible on an alien world?
Jul 28 '19 at 20:35
2
Why would a staff increase the magic power of a mage?
Oct 17 '17 at 15:54
3
What single change would have given the best chance for the Soviets to win the Cold War?
Oct 17 '17 at 13:31
3
Can estrogen be used to lower the criminal rate of a civilization?
Jul 8 '17 at 18:59
3
Pure vacuum zero-g spaceship design
Jul 8 '17 at 18:42
0
Making political system that encourages extremist parties?
Jul 3 '17 at 8:23
1
How do you solve the copied consciousness conundrum without killing anyone?
Jun 26 '17 at 20:27
4
How to make rich have more children?
Jun 26 '17 at 11:46
3
A poison that only works if you know it is there
Jun 13 '17 at 15:33
0
Variations of biomes in low-tilting worlds
Jun 13 '17 at 15:27
1
What natural phenomena could make an island unreachable?
Jun 13 '17 at 6:52
0
What conditions may lead to an intelligent civilization employing only bio-machines?
Feb 15 '17 at 2:50
0
Could a branch of canine creatures (instead of apes) evolve into humanoid animals?
Feb 13 '17 at 22:34
6
How do scientists know whether a virus is man-made or not?
Feb 6 '17 at 0:54
3
How can I create a poison that kills a person after a specific amount of time, and is treatable by an antidote?
Feb 6 '17 at 0:46
4
Why would the whole of mankind live in a single, gigantic city?
Feb 6 '17 at 0:30
6
What crime would be illegal to uncover in medieval Europe?
Nov 7 '16 at 10:33
3
How can I prevent the collapse of the Soviet Union?
Sep 23 '16 at 19:26
1
2