Death of the Sun
Remember, on the other side of that screen is a real person. ( Missouri Mule )
Human over population easily because that also causes global warming, although pollution has been going down in recent years in more developed countries such as USA and Japan. As much as I hate to say it, we need a war or a plague. Or something like "Interstellar" to happen within the next 100 years. Ebola anyone?
"We’re going to close the unproductive tax loopholes that allow some of the truly wealthy to avoid paying their fair share. In theory, some of those loopholes were understandable, but in practice they sometimes made it possible for millionaires to pay nothing, while a bus driver was paying ten percent of his salary, and that’s crazy." -Reagan
Terribly worded poll.
The death of the sun is not a 'possibility', its a certainty. But its also a long, long way off...past the point where humans will still be humans, assuming evolutionary pressures will still apply in the future.
A meteor is also a certainty. But it wont 'kill' the planet. Good chance it may wipe out humans/post-human forms one day, but again, this could be millions of years in the future.
Overpopulation wont kill the planet. It will, of course, kill more humans, because the more humans alive, the more that die. Thats basic math. Its also doesnt seem to be an immediate threat, as population is predicted to level off by the end of the century.
Global warming, of course, wont kill off the planet nor humans, but it will make things extremely difficult for many, and it will do it in a relatively short time frame. But thats just educated research scientists who believe that, and we all know they dont know as much as conservative pundits.
Seems like nuclear war would be useful to put on the list if you are talking about the death of humanity. Thats still a real possibility.
Many Trump supporters have lots of problems, and those deplorables are bringing those problems to us. They’re racists. They’re misogynists. They’re islamophobic. They're xenophobes and homophobes. And some, I assume, are good people.
Well, it's a success in the sense that we've overcome the natural dangers and limitations of our environment. I agree, it's not as healthy in the long run for our species or the planet, if we don't find some eco-friendly equilibrium. It seems the technological intelligence of our brain has developed much faster than our emotional reasoning, or we'd easily see this problem and moves towards a fix.
Einstein, "science without religion is lame, religion without science is blind."
Sheldon Cooper procreating.
'What kind of sick and twisted toy factory is this?'
'We are all the sum of our tears. Too little and the ground is not fertile, and nothing can grow there. Too much, the best of us is washed away.'
"Better to be dead and cool, than alive and uncool."
If we're talking threats to the actual planet, then honestly I can't think of too many. Solar expansion would destroy the atmosphere and the oceans, and boil away a decent chunk of the earth's mass, but there's still be something there after the sun shrank back down. It would just be a lump of dead rock though. A nearby gamma ray burst could do something similar. A large enough impact could destroy the planet, but we're talking something incredibly huge, like the size of the moon or bigger.
If we're talking threats to humanity as a whole, then that opens up a lot more possibilities. Global warming is a threat to society, but not to the global population as a whole. Even if the earth warmed enough to melt all the ice caps and completely change the climate around the whole planet, humanity would survive. It would be tough, and the earth might not be able to support as large a population as it does now, but we'd survive. I don't see how overpopulation could be a threat to humanity, because it's self-limiting. If there are too many people to support, more people will start dying of starvation, disease, and/or lack of water, and the population will go down until we can support it again.
An asteroid impact like the K-T extinction would be a threat, but I think we'd get through that as well. Recent evidence has started showing that it wasn't just the asteroid impact that wiped out the dinosaurs. It was a series of things happening in a short period of time, and the asteroid was the nail in the coffin. An asteroid of that size impacting would be devastating, probably on a continental scale, but humanity would survive. A much larger (or faster moving) impact might wipe us out, but that kind of thing is extraordinarily rare.
A super-volcano erupting would likely have similar effects to an asteroid impact.
Nuclear war wouldn't wipe out humanity, there aren't enough nukes to do it.
I'm not really sure what's the most likely thing that could wipe us out, if anything ever does. I suspect if it did happen, we'd never see it coming.
If I have to guess though, I'm going to go with some kind of large-scale industrial accident. Nanotechnology gone wrong maybe, or a rogue AI. Or some kind of runaway reaction accidentally caused in a particle accelerator.
If you build a man a fire, he'll be warm for a day.
If you set a man on fire, he'll be warm for the rest of his life.