31 votes

Why would humans carry around live plants in a post-apocalyptic world?

The Plants Filter Out Toxins Part of the process of converting CO2 to O2 is storing the C (carbon), which is used to build the plant's biomass. So for a single plant to produce enough oxygen for a ...
BoomChuck's user avatar
  • 3,559
27 votes
Accepted

Ideal Apocalypse for Raising Well Adjusted Children

Zombie scenario works Assume that "zombies" are created by some technological process - virus, nanotechnology, invasive meme, whatever. Read Glasshouse by Charles Stross and/or Implied ...
KerrAvon2055's user avatar
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19 votes
Accepted

Will a Humans Tolerance Keep Going Until Full Immunity?

Full immunity is unlikely Let's give an example of a drug used in copious amounts in current society. Alcohol! With alcohol use you can see that people do get higher tolerances. They need more alcohol ...
Trioxidane's user avatar
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17 votes

Ideal Apocalypse for Raising Well Adjusted Children

If I understand, you want those happy children as a foil to investigate the traumatized mind, but if I were to read such a story I'd perceive it as offputtingly misinforming on a crucial dimension of ...
ariola's user avatar
  • 271
15 votes

Ideal Apocalypse for Raising Well Adjusted Children

Make the kids invulnerable. Or simply not explain at all. George Lucas made a great mistake explaining the magic of The Force You say: "None of the pressures of modern society" Oh, dear... ...
MichaelK's user avatar
  • 43.4k
15 votes

Why would humans carry around live plants in a post-apocalyptic world?

The average leaf produces 5 milliliters of air an hour. while a human uses around 16 liters of oxygen an hour, which makes for a need for around 3200 leaves. Assuming an average plant weighs 5 kilos ...
Nepene Nep's user avatar
  • 37.6k
15 votes

Why would humans carry around live plants in a post-apocalyptic world?

Breathing OUT is dangerous Imagine a world with some kind of insect that is attracted to the smell of human breath. If they smell you breathing, they will swarm you and tunnel through anything they ...
Nosajimiki's user avatar
  • 89.8k
15 votes

Post-apocalyptic automotive fuel for a cold world?

You can easily adapt any diesel engine to run on vegetable oil. https://www.caranddriver.com/features/a15129612/how-to-convert-your-diesel-to-run-on-vegetable-oil/ so if your people have all the ...
Till's user avatar
  • 1,465
15 votes

How much steel could be recovered from cities a few hundred years after a nuclear apocalypse?

Rusted steel is not a problem for metallurgy. Smelting is precisely the process of turning iron oxide into metallic iron. In principle 100% of the available rusted iron alloy is recyclable. The ...
L.Dutch's user avatar
  • 283k
15 votes

How might civilization develop if hunter-gatherers and/or early agrarian civilizations had access to highly advanced technology?

Near-immediate extinction People "without memory, identity nor culture" are basically helpless, especially since that list of deficiencies presumably means that they have no language to ...
KerrAvon2055's user avatar
  • 26.6k
14 votes

Ideal Apocalypse for Raising Well Adjusted Children

A pandemic, but more brutality and fewer deaths Confused? So pandemics generally have a scarring impact on populations by nature of their associated quarantines, fear factors, and so forth. Consider ...
dreamforge's user avatar
  • 1,302
14 votes

How long would it take for a civilization to forget how it began?

Myth or History? And, coupled with that question, what level of precision do you desire? As soon as they happen, events will be formed into a narrative which is used by the current generation to ...
o.m.'s user avatar
  • 114k
13 votes

What wild mammals could survive a nuclear winter?

Mostly the same sorts of mammals that survived the dinosaur holocaust. Rodent-like animals that live underground. They can and do feed on roots, grubs, worms, etc, in tunnels, they make for themselves ...
Kilisi's user avatar
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12 votes
Accepted

What is the most important objective for survival in a post-apocalyptic society?

Reinforcing their defenses and economy The biggest threats to any society are their bellies and their blood. If they can't maintain good foodstocks in the long run they'll die, and if they can't ...
Nepene Nep's user avatar
  • 37.6k
12 votes

Would improvised motor vehicles be feasible a century after the fall of industrial civilization?

No, at least not sustainably. After a century, you might have both machine tools and decent steel left. Ignoring those, constructing something like a diesel or gasoline engine requires the forging of ...
o.m.'s user avatar
  • 114k
12 votes

Ideal Apocalypse for Raising Well Adjusted Children

There's actually a whole subgenre of fiction that deals with this, sometimes called "Cozy Apocalypse Fiction" the general premise is that the Apocalypse was such that areas of denser ...
hszmv's user avatar
  • 10.9k
12 votes

Ideal Apocalypse for Raising Well Adjusted Children

Another planet Humans have found a Goldilocks planet to colonize. They start by sending automated ships to establish the basic utilities for them: solar panels, water treatment plants, and farms. ...
Ryan Spencer's user avatar
12 votes

How long would it take for a civilization to forget how it began?

Basically, as soon as most of the people with lived experience of Earth's civilisation die. A few decades, perhaps. The main problem is that oral tradition is not very good for passing knowledge. It ...
ihaveideas's user avatar
  • 3,868
12 votes

How much steel could be recovered from cities a few hundred years after a nuclear apocalypse?

Let's look at ore grades to see if they would bother. So, according to wikipedia, to be viable, an iron ore mine needs ore with 25% iron. To produce this, they expect 3 tonnes of regular stuff will ...
lupe's user avatar
  • 5,317
11 votes

Hazard symbols for exclusion zones

Exclusion zones are only a thing if you have the population pressures to require them and the strength of government to enforce them, likely neither being the case in your proposed scenario. You're ...
Separatrix's user avatar
  • 118k
11 votes

How might civilization develop if hunter-gatherers and/or early agrarian civilizations had access to highly advanced technology?

Try to picture what would happen if you left a kid with no experience or education in a room full of various gadgets: the kid would start playing around with them until they would get either hurt or ...
L.Dutch's user avatar
  • 283k
10 votes

Would improvised motor vehicles be feasible a century after the fall of industrial civilization?

A century after an apocalypse event, the biggest problem with any attempt to build machinery is the memory of what was. People will try to recreate what was, such as buggies and motorcycles, when the ...
David R's user avatar
  • 5,192
10 votes

Post-apocalyptic automotive fuel for a cold world?

Short answer: Rapeseed and sunflower oil Rapeseed and sunflower oil are common biological energy sources. Palmoil and soybeans work great as well, but probably don't agree with the climate you ...
Matthias's user avatar
  • 1,926
10 votes

What wild mammals could survive a nuclear winter?

It is already suggested, but I would bet on small mammals that live underground and can eat anything they can find. After all, mammals were the survivors of the asteroid impact that killed the ...
cconsta1's user avatar
  • 1,074
10 votes

Will a Humans Tolerance Keep Going Until Full Immunity?

It depends on the drug Let's take opiates (as an example). People who regularly use opiates build up a tolerance. It also becomes part of how their body functions (we'd call this a physiological, ...
lupe's user avatar
  • 5,317
9 votes

Would improvised motor vehicles be feasible a century after the fall of industrial civilization?

I can't remember where I heard this, but I remember someone saying that you can have steam powered trains running almost indefinitely - because all you need is blacksmithing tools (assuming no ...
David Rouse's user avatar
9 votes

Would improvised motor vehicles be feasible a century after the fall of industrial civilization?

100 years will not destroy the world's supply of vehicles. Quite a lot of pre-apocalypse vehicles are likely to survive the apocalypse, not intact, but with key parts such as the engine block still ...
Therac's user avatar
  • 4,918
8 votes

Feasibility of the distributed prison

Have fewer actual prisoners Before the mid-1800s, the idea of prisons barely existed. An entire town might have a single jail cell which they only used for short-term holding while someone awaited ...
Nosajimiki's user avatar
  • 89.8k
8 votes

Post-apocalyptic automotive fuel for a cold world?

Assuming ethics are not an issue in the new society, render the blubber of marine mammals to get oil. Whales might be difficult, but natives managed with small boats and hand launched harpoons. ...
James Cook's user avatar
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