Linked Questions

4
votes
4answers
132 views

Most important/useful animals and plants to save from the apocalypse?

So, nuclear war is on the horizon. I’m order for humanity and Earth to survive on, organizations, both public and private begin to construct massive underground shelters, each with the ability to ...
11
votes
5answers
2k views

How many people within a given population could reasonably be “noble” without inbreeding becoming an issue?

I have searched around the site and seen several population-related questions, but not one that is getting at what I'm specifically wondering (or that is at least explaining it in a way that my ...
4
votes
2answers
208 views

What is the minimum earth population required to keep up the current technologic state of the art long term?

I'm wondering what would be the minimum number of people living on earth required to keep our current level of technology, e.g., in each field the state-of-the-art. Many technologies have long ...
102
votes
31answers
26k views

If 120 experts in 12 different fields were sent back 10,000 years, could they recreate the 21st century in 100 years?

Ten experts (CEOs, professors) of each of the fields of math, physics, chemistry, economics, engineering, electrical engineering, CS, sociology, psychology, art, politics and education (120 total) are ...
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 ...
3
votes
5answers
318 views

Would having more than two sexes decrease the number of individuals required to have a sustainable population from a genetic perspective?

On a world made up of many small islands, each island cannot support a very large population. Although sometimes individuals from one island make it across the ocean to another, this is usually a ...
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 ...
5
votes
6answers
225 views

Does a large population make sense in a galactic society with automation tech?

So I am writing a Sci-Fi novel where humans are currently spread out over 440 Star systems ( ~ 2000 Light years). There has been several breakthroughs in Automation technology and all manual labor ...
-1
votes
5answers
448 views

What would be the human population 200 years after 8 slaves escape?

Okay so in my setting, long story short, it starts off with a group of humans escaping an alien fleet they were enslaved by and conscripted into, and they find an earth-like planet that's smaller than ...
2
votes
3answers
442 views

Travelling in space for 6000 years, how many persons are needed? [closed]

So a spaceship is on its way to a new planet. The crew needs to survive during 6000 years on board. They will not get any help and they need to survive on their own. How many persons would need to be ...
2
votes
0answers
122 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 ...
-4
votes
3answers
280 views

Future People on Earth [closed]

I watch the TV show The Last Man on Earth and there is only a handful of women and men living. In the show the few are trying to conceive. They haven't covered how eventually they will have to inbreed ...
3
votes
3answers
715 views

Long term living without sunlight

May be the wrong site, but researching for a writing project... What effect would there be on a group of humans living in a lightless and cramped environment (assume underground) for nearly 800 years, ...
3
votes
6answers
653 views

Ratio of passengers to cargo on colony flights

Sci-fi scenario with flights to a colony planet. Tech level is otherwise close to today (e.g. no androids or desktop nanofactories). Planet is quite similar to Earth, so e.g. agriculture works, you ...
0
votes
4answers
737 views

How does a small starting population affect diversity of a colony?

Scenario: A colony of 20,000 is founded, and has no access to any further inhabitants. Assuming this colony is humans of varying traits (genetics such as skin color, eye color, etc) with no single one ...

15 30 50 per page