Linked Questions

4
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3answers
1k views

How many people does it take to run a self sufficient colony [duplicate]

How many people would it take to to run a self sufficient colony? I'd say it would take from 20-1,000,000 to live comfortably and still be a colony. But I want to know if it's possible with less than ...
0
votes
1answer
2k views

What is the minimum number of people you need to have a diverse enough gene pool to last about 2 centuries? [duplicate]

Other questions have looked into founding successful colonies, meaning healthy populations that thrive indefinitely. However, many stories concern a colony that is discovered some specific (and ...
2
votes
1answer
639 views

On a generation ship, How many different families would you have to have to prevent inbreeding [duplicate]

Outfitting an generation ship. How many unrelated people would you have to have in order to have a big enough genetic pool for mating to prevent inbreeding?
2
votes
3answers
274 views

If a major disaster wiped out most of humanity, how many survivors would there need to be in order for them to rebuild? [duplicate]

I have a story set about five thousand years after a major disaster reduced the world population from billions down to... well, that's the question. How low could it have gone, and still provide the ...
2
votes
0answers
163 views

What is the minimum viable population to avoid genetic decay? [duplicate]

There are a couple of other questions that get CLOSE to this one, but mine is much more basic. The other estimates are for colony size or country size, and these take into account technology, ...
2
votes
0answers
98 views

How many people would it take to colonize Mars? [duplicate]

To ensure a self-sufficient colony, there would need to be enough people to ensure a diverse gene pool, a wide variety of technical experience, and enough bodies to work farms and such. How many ...
107
votes
16answers
14k views

How many humans can I abduct without getting noticed?

Humans as Pets is now a thing. But not for AI (as in the linked question) but for the aliens. This celebrity was seen with their human pet and now every alien kid is begging their parent to get one ...
45
votes
13answers
14k views

Could humanity survive if all except a few males died in a plague?

Tomorrow, a sudden airborne plague comes around that kills nearly all human males - women are unaffected. The UN and different nations try their hardest but fail to find a cure. There are riots and ...
24
votes
10answers
12k views

Could human civilization live 150 years in a nuclear-powered aircraft carrier colony without resorting to mass killing/ cannibalism?

An un-treatable virus starts infecting and killing people. Societies are on the brink of collapse, and it is decided the best way to save the most amount of people is to move everyone who can fit into ...
39
votes
10answers
56k views

How many people are required for a healthy re-population of the Earth (Post-Apocalypse)?

In my particular Earth, much has remained after the human-killing virus, and nature is thriving - even taking over the cities. It's beautiful. But I have separated the healthy populace in orbit ...
11
votes
12answers
4k views

How plausible is a system of clans of pure-blood wizards?

In this medieval world, I want to set up a clan system that builds up every kingdom. Every kingdoms will have at least 3-4 big clans/families, each is unique to the theme of the magic they use. For ...
24
votes
6answers
3k views

How many people need to be born every 8 years to sustain population?

So I'm doing some worldbuilding for a small, isolated village on the coast. The winters are harsh, but making sure everybody has enough food generally isn't an issue because they have good trade with ...
14
votes
5answers
4k views

Colonizing a planet: how much food would we need to bring?

Assuming that the planet is 20 light years away (so back and forth trips would be impractical) we have no clue whether there is any edible life forms on the new planet hibernation (freezing/thawing ...
25
votes
7answers
6k views

What is the minimum size of a self-sufficient industrial country?

Imagine there is a country in which there are all important natural resources (oil, gas, metal ores, wood, etc.) in their natural form and which lies in a temperate climate region. There may be some ...
9
votes
7answers
4k views

What is a reasonable amount of population growth for 900 years?

Starting with about 500 humans and allowing for 900 years to pass, about how many people would there be at the end? (Just asking for a rough estimate, maybe a range.) Assuming: People are generally ...

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