We are united? You're joking right? NK wanting to kill just about everyone. ISIS attacking people left and right. Russia and the US can't get along for beans. But yeah, we are united.
I don't need proof of anything being an immediate threat. If you want something more immediate, then take a look at how we don't get along. How wars are still being fought. I am more along the lines of trying to discuss the future, as is what the op asked for. The future is simple. We could be killed by so many things that can be avoid if we would stop threatening each other for five minutes and combine our resources and smarts.
Don't dwell on "the news" - despite what the media like to report (because blood, violence and fear sell), globally infant mortality is down, deaths by violence are down, war is down, disease is down, and education and healthcare are up. The human race as a whole is literally better off than it's ever been.
http://thinkprogress.org/security/20...human-history/
http://blogs.reuters.com/great-debat...s-why-its-not/
That said, if you want some cynicism, human civilization is going to crash hard when the current run of globalization runs out, and the longer it goes on, the worse the crash will be; and just to make things extra fun, we're now living in a world that can only feed a tiny fraction of its population without global industrialization and we're headed for the Thermopocalypse. Barring pie-in-the-sky technological revolutions of a magnitude to make fire, printing, industry, and IT all look like has-beens, the human race is going to catastrophically crash within 200 years, probably a lot sooner - our systems are unstable and subject to all sorts of nasty positive feedback.
http://www.theguardian.com/environme...udy-scientists
http://www.theguardian.com/commentis...aring-collapse
So pick whichever interpretation lets you sleep at night, tell yourself I'm a nut for mentioning the other one, and get on with your life.
"In today’s America, conservatives who actually want to conserve are as rare as liberals who actually want to liberate. The once-significant language of an earlier era has had the meaning sucked right out of it, the better to serve as camouflage for a kleptocratic feeding frenzy in which both establishment parties participate with equal abandon" (Taking a break from the criminal, incompetent liars at the NSA, to bring you the above political observation, from The Archdruid Report.)
And there won't be, until we get smacked, hard. Imminent asteroid impact is bordering on being an Outside Context Problem, "the kind of problem that most civilizations would encounter just once, and which they tended to encounter rather in the same way a sentence encountered a full stop".
"In today’s America, conservatives who actually want to conserve are as rare as liberals who actually want to liberate. The once-significant language of an earlier era has had the meaning sucked right out of it, the better to serve as camouflage for a kleptocratic feeding frenzy in which both establishment parties participate with equal abandon" (Taking a break from the criminal, incompetent liars at the NSA, to bring you the above political observation, from The Archdruid Report.)
You think a virus deadly enough to wipe us out wouldn't be spread? We have the means to spread one easily. Guess you got a third, more immediate point of what is threatening us if we don't work together. In the form of what @ringpriest said.
We need to come together as a whole and solve major issues. You cannot just keep putting them off until Oops, its too late. They need to be addressed now in order for our species to thrive and survive. This fighting among ourselfs is of no use and will ultimately assure our downfall.
I cannot agree with this comparison. A sentence would stop from a surprise, sudden, unforeseen event. We have seen the devastation an asteroid could bring. We just refuse to work together as a whole to find a solution to prevent it from happening again. only this time, to us instead of the dinosaurs.
And how would that happen? All out war? We are not capable of ensuring the human race stays at any levels when we wont even work together. Why should we? If we work together, a solution is all the more likely than if we remain separated in the various fields of research.
First, what major, global crisis has this world, in its entirety, come together to solve?
Second, what makes you think we could regulate that as we are now? Some countries may choose to kill people off. Others may see this as a chance to kill other countries to ensure their own countries survival. What reasons do you have to believe the entire world would agree to that vs the leaders looking out for their own nations / countries instead.
Not sure what this is honestly. So I cannot speak about that.
That is my point though. The sun and asteroids are both natural things that could cause great devastation. We know about them being a possible threat, yet we don't work together to premptivly attempt to solve the issue. The same thing applies to this scenario as well. If we work together, there wont be a collapse.Because if we don't then nature will regulate it for us.
Prolly the same way we have survived throughout history though all the things you mentioned were happening. To that end I would challenge you to find the period of time in history when those atrocities weren't happening.
Use the light from your computer display, since you are looking at that currently anyway. The fact that you can see that is proof that humanity has survived before and the evidence that suggests we will continue to.
"Take the time to sit down and talk with your adversaries. You will learn something, and they will learn something from you. When two enemies are talking, they are not fighting. It's when the talking ceases that the ground becomes fertile for violence. So keep the conversation going."
~ Daryl Davis