I would like to write a science fiction novel where, as of today (30 April 2023) all humans disappeared from the universe. All other animals, plants & fishes exist, just not humans.
What would be the impact of this?
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1"What will be the impact?" We can't possibly predict that. "Can you assist me?" What with?– F1Krazy ♦Apr 30 at 8:27
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3We cannot write your novel for you.– user55858Apr 30 at 9:12
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3Your questions always, always seem to circle back to "I have this great idea for a novel, can it be turned into a documentary or movie?", to which the answer is always "write the novel first, and if it's good enough, maybe someone will want the rights to it". I don't understand what else you want us to tell you.– F1Krazy ♦Apr 30 at 13:32
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2Ok, but you're still going to need some characters and a central conflict before this becomes a 'story'.– wetcircuitMay 1 at 3:39
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2Please stop adding extra questions. You won't make it on-topic by doing that, you're just making it off-topic and too broad. It's not fair to Amadeus, after he put in the effort to answer your initial question, to suddenly change the goalposts and ask for extra information.– F1Krazy ♦May 1 at 17:59
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1 Answer
The impact of no humans on Earth is already known, there are several scientifically oriented TV shows that have tackled what happens after humans go extinct. Nature reclaims the planet, everything we've made decays into unrecognizable rubble in a few thousand years, maybe ten thousand at the most, although, as we see on ancient sites of extinct civilizations, some natural stone works (not concrete) can last nearly indefinitely (like Mount Rushmore, marble or granite sculptures, thick block stone buildings, like the Pyramids, or many stone works from Roman times like the Coliseum (in disrepair because of an earthquake).
The forest will pretty quickly creep back into cities, take over roads, vegetative growth (and earthquakes and floods and winds and lightning strikes and heavy snowfalls and decay) will break apart buildings and obliterate roads and highways.
One of the hardiest materials we make is stainless steel (like many sinks).
Except for those and the stones, look back to Earth about 10 million BC. If you don't mind the stone artifacts and some stainless steel, look to about 40,000 BC (e.g. Gobleke Tepe era). Or many other megalithic sites built by humans without any extraterrestrial help you can see on the travelogues called "Ancient Aliens", that are really about "Ancient Quite-Intelligent-All-On-Their-Own-Thank-You Humans".
