So basically I have been looking around the world, and it seems to me that almost every problem that is happening will not kill everyone on Earth, or even get close.
1. Nuclear War; China and Russia; I don't think this will kill as many people as you think. For one thing, Humanity could survive nuclear winter by growing crops indoors, using GMOs, and using artificial light. But I don't even think it will get that far. The Russians and Chinese don't maintain their submarines, their bombers will get shot down, their hypersonics are too expensive, and their ICBMS I suspect aren't in good shape due to poor maintenance. I think they are buffing somewhat, and while I don't think they will kill 0 Americans, Asians, and Europeans in a war, It will turn out like the Urkaine War where the West will disable lots of Chinese, and Russian Nuclear weapons by nuking them or via cyber warfare, saboteurs, and defenses on US ships.
2. Climate Change; I actually think this will kill lots of people, but it will be limited to 3 degrees. Unless it's 4 degrees, it won't kill everyone. However it will make life harder so we will need more and more climate change policy, and business innovations to counter it. I think that can be done but the damage to South Asia, South America, Africa, and East Asia will be large. However, due to lower population(and thus demand for goods), remote work, and schooling, beyond meat, renewables and nuclear, and so on we are getting closer and closer to 2.5 to 2 degrees C.
3. Asteroid strike, we could literally just fire some SpaceX rockets to alter the course of it. Fire more for larger ones.
https://web.archive.org/web/20160305101217/http://neo.jpl.nasa.gov/neo/report2007.html
4. Disease
I don't think so. For one compare the Spanish flu to Covid in its entirely, and you will see it's killed a lot fewer people, and we could just deploy a vaccine for it unless it's a lab-grown super virus, and even then the world's largest superpower, the US under Nixon thinks bio-weapons are weak and destroy its development to gain brownie points with the world.
5. Chemical Weapons of War
Also weak, and are a worse nuclear weapon.
6. Armed conventional conflict that kills every single person: I had a professor who argued that it's possible using statistical software. The problem is that humans will almost always gang up on the aggressor so whoever starts this would need a large alliance with numerical superiority, and why they do so if they had that given that they would have more to lose.
7. AI: No, they may take our jobs, but killing us is hard since we are the apex predators of this planet who have climbed through thousands of years of evolution through the corpses of dead animals. That and any AAI(advanced artificial intelligence would be simulated, then if it does anything bad in said simulation, it gets deleted or gets another simulation.
So what could kill all of humankind?
1. Alien invasion by an alien race that is trying to kill any future potential upstarts, we would be like a caveman trying to stop a carrier battlegroup. And no our resources aren't valuable, oil and coal arse the only thing we produced that can' be found on other planets that we know of due to life creating them, their sun/black holes, or another space-based resource like anti-matter, or black holes would be way more energy-dense.
2. The sun dying/expanding due to humanity not doing anything to get to another viable solar system for a long time. likely won't happen, but I can't rule it out due to human apathy. Also, we could mine the sun, and make it smaller which will prolong its life in the future.
3. Yellowstone; it's literally a supervolcano that will black out the sun. I guess we could try to alter the interior of the volcano, but I don't know if we are doing so right now.
1. Nuclear War; China and Russia; I don't think this will kill as many people as you think. For one thing, Humanity could survive nuclear winter by growing crops indoors, using GMOs, and using artificial light. But I don't even think it will get that far. The Russians and Chinese don't maintain their submarines, their bombers will get shot down, their hypersonics are too expensive, and their ICBMS I suspect aren't in good shape due to poor maintenance. I think they are buffing somewhat, and while I don't think they will kill 0 Americans, Asians, and Europeans in a war, It will turn out like the Urkaine War where the West will disable lots of Chinese, and Russian Nuclear weapons by nuking them or via cyber warfare, saboteurs, and defenses on US ships.
Russia's Problems with Military Professionalization
Even if Russia manages to take control of the territory of Ukraine, the Russian military's underlying problems with professionalization may handicap these occupiers in their efforts to maintain control over that country for the long-term.
www.rand.org
Poorly made Chinese tires – A new theory on Russia’s slow advance
An interesting new theory has emerged explaining the slow advance of Russia’s armoured convoy into Ukraine, with online experts suggesting that substandard vehicle maintenance and poorly made Chine
www.defenceconnect.com.au
2. Climate Change; I actually think this will kill lots of people, but it will be limited to 3 degrees. Unless it's 4 degrees, it won't kill everyone. However it will make life harder so we will need more and more climate change policy, and business innovations to counter it. I think that can be done but the damage to South Asia, South America, Africa, and East Asia will be large. However, due to lower population(and thus demand for goods), remote work, and schooling, beyond meat, renewables and nuclear, and so on we are getting closer and closer to 2.5 to 2 degrees C.
3. Asteroid strike, we could literally just fire some SpaceX rockets to alter the course of it. Fire more for larger ones.
https://web.archive.org/web/20160305101217/http://neo.jpl.nasa.gov/neo/report2007.html
4. Disease
I don't think so. For one compare the Spanish flu to Covid in its entirely, and you will see it's killed a lot fewer people, and we could just deploy a vaccine for it unless it's a lab-grown super virus, and even then the world's largest superpower, the US under Nixon thinks bio-weapons are weak and destroy its development to gain brownie points with the world.
5. Chemical Weapons of War
Also weak, and are a worse nuclear weapon.
6. Armed conventional conflict that kills every single person: I had a professor who argued that it's possible using statistical software. The problem is that humans will almost always gang up on the aggressor so whoever starts this would need a large alliance with numerical superiority, and why they do so if they had that given that they would have more to lose.
7. AI: No, they may take our jobs, but killing us is hard since we are the apex predators of this planet who have climbed through thousands of years of evolution through the corpses of dead animals. That and any AAI(advanced artificial intelligence would be simulated, then if it does anything bad in said simulation, it gets deleted or gets another simulation.
So what could kill all of humankind?
1. Alien invasion by an alien race that is trying to kill any future potential upstarts, we would be like a caveman trying to stop a carrier battlegroup. And no our resources aren't valuable, oil and coal arse the only thing we produced that can' be found on other planets that we know of due to life creating them, their sun/black holes, or another space-based resource like anti-matter, or black holes would be way more energy-dense.
Relativistic kill vehicle
A relativistic kill vehicle (RKV) or relativistic bomb is a hypothetical weapon system sometimes found in science fiction. The details of such systems vary widely, but the key common feature is the use of a massive impactor traveling at a…
en-academic.com
2. The sun dying/expanding due to humanity not doing anything to get to another viable solar system for a long time. likely won't happen, but I can't rule it out due to human apathy. Also, we could mine the sun, and make it smaller which will prolong its life in the future.
The Sun Will Eventually Engulf Earth--Maybe
Researchers debate whether Earth will be swallowed by the sun as it expands into a red giant billions of years from now
www.scientificamerican.com
3. Yellowstone; it's literally a supervolcano that will black out the sun. I guess we could try to alter the interior of the volcano, but I don't know if we are doing so right now.
What would happen if a "supervolcano" eruption occurred again at Yellowstone? | U.S. Geological Survey
If another large, caldera-forming eruption were to occur at Yellowstone, its effects would be worldwide. Such a giant eruption would have regional effects such as falling ash and short-term (years to decades) changes to global climate. Those parts of the surrounding states of Montana, Idaho, and...
www.usgs.gov