[MutantGecko]

this game: http://www.kongregate.com/games/lemmibeans/one-chance

[The Socktor]

(Original post by bestofyou)
humans have been extinct before. Just go and and look into extinct humans

I mean homo sapiens if you want to be that specific.

[Nick100]

(Original post by nmudz_009)
Well, we did in Dr who

The humans in Doctor Who only made it to the year 100 trillion; if we keep even a giant star's worth of hydrogen spare then humans might be able to last much longer - into the quadrillions of years.

[nmudz_009]

(Original post by Nick100)
The humans in Doctor Who only made it to the year 100 trillion; if we keep even a giant star's worth of hydrogen spare then humans might be able to last much longer - into the quadrillions of years.

I think, if we do get to that stage, we'd have a lot of power over space and time itself. We'd understand every rule and every piece of matter. Maybe we cud create our own stars, to keep the universe from "dying" We myt even have absolute control over every moving object (that isn't alive) in the universe so wud be capable of manipulating it like computer code, some we wudnt be enclosed by any natural law

[arnoob]

(Original post by Cannotbelieveit)
Right now, definitely war.

The amount of Nuclear Weapons owned by the US and Russia could wipe us out easily.

I am going to disagree only because Einstein said nuclear war will wipe out 2/3 of the planet.

[DeanFoley]

You don't have an option for humanity never going extinct.

[joey11223]

Personally I think it'll be between these two...

1) Pandemic. Possibly a genetically engineering virus, the original intent for it's creation may have been to help. However for what ever reason, either bio-terrorism or a virus which undergoes an unexpected mutation, a disease to which no one appears to have resistance and which kills fairly rapidly could wipe us out. Though it would have to be able to survive in the environment and be carried by winds, a zoonotic disease might be necessary for all of humanity to be wiped out, a super form of rabies for example.

2) Mass extinction event of another meteor impact. I'd say this would have to occur within a reasonably short time period because in the not too distant future we'll likely have more of a presence in space and may be able to more easily re-direct it.

3) Distant future of course, but human history shows we are not exactly a peaceful species. If we end up meeting multiple advanced species and punch above our weight, retaliation might mean our extinction.

I noticed an option was us evolving into something else. I don't think that's human extinction. If in 100 million years we look nothing like we do, we'd surely still keep our binomial name?

[ROYP]

Couldn't choose between war, genocide and scientific experiment gone wrong. I think people will cause human extinction

[tomclarky]

(Original post by FranticMind)
I don't think we will ever be eliminated. Once we start colonising other planets we will be too widespread.

What? You make it sound like hopping to another planet is like moving house. The nearest place which is even remotely habitable is 600 light years away.

I honestly think the human race will be extinct within 200 years. Most likely nuclear war or some kind of man-made, highly contagious super virus.

I think it's human nature to destroy ourselves.

[FranticMind]

(Original post by tomclarky)
What? You make it sound like hopping to another planet is like moving house. The nearest place which is even remotely habitable is 600 light years away.

I honestly think the human race will be extinct within 200 years. Most likely nuclear war or some kind of man-made, highly contagious super virus.

I think it's human nature to destroy ourselves.

Definitely the last part! But we are also excellent survivors!

Yes while it is true that to live and prosper on the surface the closest one is so far away. However we could inhabit mars and any planets with water, we would need to build a significant amount of infrastructure, but it could be done. Hence the mission to mars! You think they are just going there for fun?

[zaliack]

I reckon it'll be a super volcano, only because I remember my geography teacher kept warning us that we are gonna die from one.

[Nick100]

(Original post by tomclarky)
What? You make it sound like hopping to another planet is like moving house. The nearest place which is even remotely habitable is 600 light years away.

I honestly think the human race will be extinct within 200 years. Most likely nuclear war or some kind of man-made, highly contagious super virus.

I think it's human nature to destroy ourselves.

But there are at least two planets within this solar system (Venus and Mars) that could be altered for human habitation. And the nearest star with a "remotely habitable" planet outside our solar system is Gliese 581; it is only 20 light years away and it might be possible to alter planets in that system as well. Over the next millenium millions of humans will end up permenantly living in space, and if we can terraform Venus and Mars, or even an exoplanet then that number could reach the billions. A population of one million growing at a rate of ~3% per year will become a population of one billion in less than 3 centuries.

It's human nature to survive in difficult circumstances; barring total destruction of Earth's crust there is no way that humans will go extinct within 200 years. Societies have existed in the Arctic circle and in the Sahara desert without any of our modern technology; with modern technology it will be possible for large numbers of humans to survive even the worst catastrophes.

[The Socktor]

(Original post by arnoob)
I am going to disagree only because Einstein said nuclear war will wipe out 2/3 of the planet.

Is that counting the indirect death toll though? Because, even if all the world's nuclear weapons, targeted at the most populus cities on Earth couldn't render us extinct, the soot that would be released by the explosions could result in Global Dimming (basically the opposite of Global Warming), which could disrupt rainfall and cause acid rain, making the growing of food more difficult, and so, the remaining 1/3 of the world may still starve to death.

[arnoob]

(Original post by The Socktor)
Is that counting the indirect death toll though? Because, even if all the world's nuclear weapons, targeted at the most populus cities on Earth couldn't render us extinct, the soot that would be released by the explosions could result in Global Dimming (basically the opposite of Global Warming), which could disrupt rainfall and cause acid rain, making the growing of food more difficult, and so, the remaining 1/3 of the world may still starve to death.

We will find a way to survive, so far throughout history we have survived extinction.

[tomclarky]

(Original post by Nick100)
It's human nature to survive in difficult circumstances; barring total destruction of Earth's crust there is no way that humans will go extinct within 200 years. Societies have existed in the Arctic circle and in the Sahara desert without any of our modern technology; with modern technology it will be possible for large numbers of humans to survive even the worst catastrophes.

Nuclear war could wipe us out easily. Think of all the problems the world is going to face in the future. Rising population, ageing population, resources running out, the economy. Look how badly global warming is being dealt with. Humans are greedy and power crazy and will surely go to war again.

[Cariie]

I think it'll be the result of overpopulation. The world will go past it's carrying capacity, and we will run out of resources before we can develop a way to cope without them. Everywhere will become industrialised in a race to be developed, leaving little arable land for agriculture (and poorer countries unable to buy plants which could cope in polluted soils), whilst pollution makes even more land and water unsuitable for use. Inevitably this will lead to water wars (which is already a threat in the Middle East and Africa, see GAP project Turkey and the upper Nile) and disease spreading more rapidly through dense populated areas. Famine and drought lead to break downs in society as governments can't provide/afford a solution, industry falls, nothing is produced, we fall flat on our faces. Just my prediction. . .

Happy times

[RadiantA]

(Original post by KCosmo)
Sun reaching red giant stage, because it will definitely happen, just not very soon, and there's no real way to stop it. I suppose we need to hope that by that point we can hop to another hospitable planet, although we are so far away being technologically able to do so. At least we have some time to start working on it!

Andromeda will collide into the Milkyway waaay before that.

[The Socktor]

(Original post by arnoob)
We will find a way to survive, so far throughout history we have survived extinction.

That's what the dinosaurs thought.

Seriously though, we've only lived for about 200,000 years. That's increadibly short compared to most species.

[ThatPerson]

I think the most likeliest cause of human extinction is war, and the irony is that humans will be responsible for the extinction of their species. There are currently more nuclear bombs on this planet that are need to destroy the entire earth.

The North Korea situation is pretty tense right now, it's the same with Iran. If Japan/South Korea shoots down NK's Missile Test, North Korea could use that as an excuse to gain the morale high ground and do a nuclear test instead.

Iran is also pretty keen to get it's hands on Nuclear Weapons, and that can also spark a war. Basically, NATO/UN is on the brink of 2 separate wars. Humans have war-like nature, and so I think that War is the most likely event that would trigger a human extinction.

[Dalek1099]

Terrestrial natural disaster because there is normally a major one every 80 million years or something and normally they are terrestrial,the last one was an asteroid though and Global Warming could make the Earth uninhabitable for humans and humans don't seem to put the planet first and only think of their personal needs.If humans do survive to the end of the universe,they wouldn't be humans because of natural selection-Doctor Who is quite stupid in that respect.