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This Is the Way the World Ends

Dave Knott writes "The CBC's weekly science radio show Quirks and Quarks this week features a countdown of the top ten planetary doomsday scenarios. Nine science professors and one science fiction author are asked to give (mostly) realistic hypotheses of the ways in which the planet Earth and its inhabitants can be destroyed. These possibilities for mankind's extinction include super-volcanoes, massive gamma ray bursts, and everybody's favorite, the killer asteroid. Perhaps the most terrifying prediction is the reversal of the Earth's magnetic field (combined with untimely solar activity), a periodic event which is currently 1/4 million years overdue."

54 of 394 comments (clear)

  1. Tsk Tsk Tsk by antifoidulus · · Score: 5, Funny

    not a single one of them even considered the possibility of streams getting crossed...for shame!

    1. Re:Tsk Tsk Tsk by daniorerio · · Score: 4, Funny

      I thought seeing Bee Movie *was* the end of the world...

    2. Re:Tsk Tsk Tsk by ElizabethGreene · · Score: 4, Insightful

      A much more interesting top ten would be the myriad ways that civilization could end. The next article on the main page discusses possible environmental causes of a 50% drop in sperm counts. Double that a few more times and you get a tidy end to civilization, attrition. Then there are natural or man made pandemics, massive climate changes, global thermonuclear war. How about a subtle shift in one of the universal constants of physics? The universe isn't going to keep expanding forever either. Too far fetched? Take heart, evolution is cooking up lots of nasty little things to use against us too.

      My personal favorite end-of-civilization would be the global spread of a hardy airborne virus that causes plants to be unable to photosynthesize. Fin.

      Now back to the news,
      -ellie

    3. Re:Tsk Tsk Tsk by John+Bayko · · Score: 4, Funny

      Would that mean that I'd have to go outside once in a while? Dangit!

      Naked.

      So bees can get at your stamen.

  2. I already know how the world end. by stonefoz · · Score: 4, Funny

    Wait till I find my r-37, space modulator.

    --
    I think I just cashed out all my cool points.
    1. Re:I already know how the world end. by Anonymous Coward · · Score: 3, Funny

      where is my earth shattering kaboom?! i wanted an earth shattering kaboom!

    2. Re:I already know how the world end. by NightRain · · Score: 4, Informative

      It's actually an Illudium Q-36 explosive space modulator

  3. Um, global thermonuclear war? by coder111 · · Score: 4, Insightful

    We still have those bombs, remember?

    What about that? I think it's still much more likely than the other options listed. It wouldn't end the Earth (nor would for example Gamma burst), but it would end the civilization and/or kill all humans.

    --Coder

    1. Re:Um, global thermonuclear war? by sleeponthemic · · Score: 4, Insightful

      We still have those bombs, remember? What about that? I think it's still much more likely than the other options listed. It wouldn't end the Earth (nor would for example Gamma burst), but it would end the civilization and/or kill all humans. --Coder

      There are humans all over the place. In some cases you'd have detonate a bomb in one area to kill a couple of people. Seems unlikely. It'd be devastating but unlikely to occur in any civilisation destroying volume.

      --
      I record my sleeptalking
    2. Re:Um, global thermonuclear war? by ionix5891 · · Score: 4, Funny

      its ok Obama will save us

    3. Re:Um, global thermonuclear war? by coder111 · · Score: 5, Interesting

      Unless we get nuclear winter, and plants cannot grow anymore- no more food. Or radiation levels become so high that people die before reaching adulthood or cannot reproduce.

      The conventional bombs we have to detonate to kill a couple of people are peanuts compared to MIRV missiles with 10 warheads each having 0.5 MT yield. And we have thousands of these.

      I know there are lots of humans all over the place, but global thermonuclear war could have enough effect on the biosphere to render it unlivable.

      --Coder

    4. Re:Um, global thermonuclear war? by coder111 · · Score: 4, Insightful

      There are too many humans for that to work. There will be a percentage of population that is resistant. Even the worst pandemics didn't kill >30% of population. This would be enough to disrupt civilized way of live for a while, but not the "end of world".

      If we go into biotechnology, I'm more scared of completely synthetic viruses/bacterias/nanobots. Our current tech is still way off, but one day it will be possible to create things for which humans have no resistance whatsoever. Something like polyethylene membrane coated bacterias. I know this specific example wouldn't work, but if something as exotic was created, our immune system would be completely helpless.

      And chemical weapons are not even that scary. You need quite a lot of chemicals to cover a relatively small area. And most dangerous ones are organic and get broken down/degraded in nature. I don't think you would be able to kill >1% of world population even if you tried with chemical weapons. And to destroy entire biosphere- impossible.

      --Coder

    5. Re:Um, global thermonuclear war? by Anonymous Coward · · Score: 3, Funny

      its ok Obama will save us

      I'll take him over the one that can't pronounce nuclear.

    6. Re:Um, global thermonuclear war? by Opportunist · · Score: 4, Insightful

      Oh c'mon, that threat scenario is SO 80s! Contemporize, man, it's the Terrorists now, not the Communists.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    7. Re:Um, global thermonuclear war? by Anonymous Coward · · Score: 5, Interesting

      I dunno, I don't think a "few" bombs going off would be as devastating as you think. Hell, if a "few" bombs could irradiate the ocean, the ocean would already be dead because that's where most nuclear testing took place.

      As for actual damage, even the Tzar Bomba only did damage up to 620 miles away. That's a lot of destructive power, but it'd still take more than a few of them to really fuck things up. After a few hundred miles from the drop zone it was mostly just breaking windows.

      I think the biggest threat of nuclear war isn't a few bombs, but the "mutually assured destruction" scenarios where everybody just says "fuck it" and just launches all of their nukes at everybody else. In that case you're looking at thousands of nukes aimed specifically at cities.

    8. Re:Um, global thermonuclear war? by HungryHobo · · Score: 4, Insightful

      I'd bet on the biosphere surviving. It might not survive in a state that we'd like but it would survive.
      fire off as many nukes as you like but come back in 10 million years and you'll find whatever the rats evolved into hunting each other through the forests of asia and the only remains of our civilisation will be a thin layer of dust containing higher than normal levels of uranium in the rock layers.
      If you don't think the rats and cockroaches will survive then bacteria will. There are bacteria which can survive inside the heart of nuclear reactors then we're not going to kill off the biosphere with just a few hundred thousand nukes.
      Even if we could blot out the sun entirely for a million years the things living around vents in the deeps of the ocean would keep going as if nothing had happened.

      We will never kill the earth, even in a worst case senario we'll be nowhere near as bad as some of the significant events of the past like asteroid hits and super volcanos.

      But we could kill ourselves, like bacteria in a dish slowly killing themselves with the products of their own metabolism.

    9. Re:Um, global thermonuclear war? by gutnor · · Score: 3, Interesting

      At the very least, humanity as we know it would be completely destroyed.

      With the knowledge infrastructure destroyed, and pressing need to work on primary survival needs, it will only take a few generations to completely wipe out hundred year of scientific advance.

      And even if a bit of infrastructure and "pockets" of advanced civilization remain, what is the chance that they will be even remotely like our civilization, even if only by their approach to "science" and "progress".

    10. Re:Um, global thermonuclear war? by Anonymous Coward · · Score: 4, Funny

      We will never kill the earth, even in a worst case senario we'll be nowhere near as bad as some of the significant events of the past like asteroid hits and super volcanos.

      Sounds like a challenge to me!

    11. Re:Um, global thermonuclear war? by Jim+Hall · · Score: 3, Funny

      I'd bet on the biosphere surviving. It might not survive in a state that we'd like but it would survive. fire off as many nukes as you like but come back in 10 million years and you'll find whatever the rats evolved into hunting each other through the forests of asia [...]

      That, or they will have developed metal casings for their mutated remains, and roll about shrieking "Ex-ter-min-ate!"

      I saw something like this on television once, so it must be true.

  4. Overdue, eh? by Secret+Rabbit · · Score: 5, Insightful

    I always love it when people say these things. Point of fact, we don't have enough data points to make this prediction. At best, that's a wild conjecture.

    1. Re:Overdue, eh? by MadnessASAP · · Score: 4, Funny

      Your moms a wild conjecture. IN BED!

      --
      I may agree with what you say, but I will defend to the death your right to face the consequences of saying it.
  5. vogons? by adavies42 · · Score: 5, Funny

    no interstellar bypass?

    --
    Media that can be recorded and distributed can be recorded and distributed.
    -kfg
  6. What's really disconcerting by Whuffo · · Score: 4, Insightful
    It's not how likely or unlikely those various doomsday scenarios are. What's disconcerting are the significant number of plausible and possible doomsday scenarios. It's not a matter of if, it's more of a matter of when.

    I sincerely hope that we'll be able to set up colonies on other planets or in other solar systems before something snuffs out life on Earth. Our survival as a species will depend on it.

    1. Re:What's really disconcerting by AngelofDeath-02 · · Score: 3, Interesting

      I'm just curious - but why do you care about our survival as a species in an event that may not happen in the foreseeable future?

      I mean, this goes beyond caring about yourself, your children, or your children's children. This goes a bit beyond survival instinct.

      --
      No, I am not an English major. My posts are subject to typos and incorrect grammar. Do not expect perfection.
  7. Exit Mundi by berend+botje · · Score: 4, Informative
    More and better scenarios:

    Exit Mundi

  8. Too late, it's gone. by apathy+maybe · · Score: 4, Funny

    According to the International Earth-Destruction Advisory Board, the current "Earth-Destruction Alert Level" is "RED". Which means that the Earth has been destroyed.
    A quote from the FAQ:

    My baby's in there!

    Your baby has most likely been destroyed.

    ----

    Anyway, for you deluded fools who think the Earth is still around, take head of this warning:

    The Earth is built to last. It is a 4,550,000,000-year-old, 5,973,600,000,000,000,000,000-tonne ball of iron. It has taken more devastating asteroid hits in its lifetime than you've had hot dinners, and lo, it still orbits merrily. So my first piece of advice to you, dear would-be Earth-destroyer, is: do NOT think this will be easy.

    Obviously it's a little out of date now, 'cause those rascals at CERN managed the job, but still...

    I note that the fools from the article don't actually want to destroy the Earth (well maybe one or two of the scenarios might break it apart or something), otherwise they would have come up with some scenarios like:

    • Annihilated by an equivalent quantity of antimatter
    • Cooked in a solar oven
    • Meticulously and systematically deconstructed

    (Quote and methods from How to destroy the Earth.)

    Fools, I'll show them all!

    --
    I wank in the shower.
  9. Re:Most likely scenario by Roland+Piquepaille · · Score: 5, Interesting

    Even the most retarded religious fundamentalist understands that dropping a nuclear bomb on someone who has one, or has a country which has one for a friend, isn't such a bright idea.

    No, more likely, the world (or more precisely Humanity, the planet would do better without than with us on it) will slip back to feudalism as cheap energy resources wane, and a sizable portion of the earth population will be destroyed by an ugly, multi-decade, low-level world war fueled by bigotry and poverty.

  10. Re:Overdue? by Roland+Piquepaille · · Score: 3, Interesting

    "Overdue" has no anthropomorphic undertone. If the Haley comet shows up one year late next time around, it'll be one year overdue.

    As for the Earth's magnetic field reversal, they have occured regularly and very often in the past, so the next one is overdue, period. Same as the Big One in California. It has nothing to do with people promising anything, it's just a matter of probabilities.

  11. Re:Overdue? by Anonymous Coward · · Score: 3, Informative

    Think of it as being past the 50th percentile on the probability distribution, not past the 100th percentile.

  12. magnetic reversals are not periodic by AliasMarlowe · · Score: 5, Insightful

    Perhaps the most terrifying prediction is the reversal of the Earth's magnetic field (combined with untimely solar activity), a periodic event which is currently 1/4 million years overdue.

    From the record of paleomagnetism found in spreading ocean floors, the reversals are anything but periodic. Reversals recur, but the interval between reversals can be less than 25 thousand years, or longer than 35 million years. In other words, the intervals between reversals vary in duration by a factor of more than 1000.

    The oceanic record is limited to the last 200 million years, at most. It has been extended further back by correlating measurements from continental rocks formed at different times, and relying on models for tectonic drift. This naturally yields inferences with lower confidence and limited time resolution. However, the results suggest that geomagnetic field has occasionally been stable for more than 50 million years at a time.

    http://en.wikipedia.org/wiki/Magnetic_reversal

    Given that their occurrence is erratic rather than periodic, and that there is no decent model for predicting their occurrence, the assertion that a magnetic reversal is "overdue" is absurd.

    The scaremongering that a reversal would lead to "the end of the world" or mass extinctions is equally puerile. Reversals of the geomagnetic field show no particular correlation with extinctions in the past.

    --
    Those who can make you believe absurdities can make you commit atrocities. - Voltaire
  13. For an interesting book on the topic... by Enter+the+Shoggoth · · Score: 3, Interesting

    ... by someone who was both scientist and science fiction author, a little dated now perhaps, but still an excellent read:

    A Choice of Catastrophes

    --
    Andy Warhol got it right / Everybody gets the limelight
    Andy Warhol got it wrong / Fifteen minutes is too long.
  14. Re:Circle of Life by Hanners1979 · · Score: 3, Funny

    You do realise how much trouble posting the Scientology creation story here is going to cause, don't you?

  15. Re:More plausible than alien invasion... by daniorerio · · Score: 3, Funny

    Soylent Green?

  16. Re:Most likely scenario by Anonymous Coward · · Score: 3, Insightful

    Even the most retarded religious fundamentalist understands that dropping a nuclear bomb on someone who has one, or has a country which has one for a friend, isn't such a bright idea.

    snip

    Even actually been to the middle east ?

    Some of the fundamentalists BELIEVE in their god. They don't care if they all die, so long as they go to heaven.

  17. Re:Overdue? by slim · · Score: 4, Funny

    People shouldn't still be anthropomorphizing natural phenomena.

    Yeah, the universe hates that.

  18. Re:Magnetic field reversal is the new 2k bug. by dissy · · Score: 4, Informative

    Do you happen to know which data points we have?

    Anyway I think it will just be another year 2000 fiasco, lots of worries and then nothing happens.

    Sure it may fuck up all satellites and some communication but so what? It's not the end of the world.

    Actually we have data points going back millions of years. They show flips of the magnetic field happening more frequently, and the current state we are in (with north at the north pole) has been this way longer than most of the other flips lasted.

    And no, it won't end the world at all. The world has been through millions of these flips and lasted just fine.
    It's ironic how a lot of people confuse 'the end of the world' and 'the end of us'

    But as a further point, it's not believed a pole reversal would just kill all humans.
    When a flip happens, there are many poles, IE there could be 8 or 10 of each a north and south pole.
    Each pole should roughly have a magnetic strength that totals our current one, thus each 'pole' is weaker.
    Only people living under these roaming spots need worry, and even then its only expected to give another 10000 cases of cancer a year (give or take an order of magnitude, going from poor memory here)

    Defiantly sucks, but not the end of anything.
    Sadly, the same is true for a lot of things on the articles list. Only life is screwed (maybe), but the planet will be fine.

  19. The most probable one is always forgotten... by master_p · · Score: 4, Insightful

    Overpopulation will kill us all before anything else...resources like oil and metals will be exhausted in the coming decades! the dramatic changes in the climate caused by human activity, the cutting down of rain forests will cause the populations of third world countries to migrate en mass to Europe and North America, further increasing the fights for the remaining resources...

  20. Re:Magnetic reversal by Opportunist · · Score: 4, Insightful

    Also don't forget that 99% of the life on earth has a lower life expectancy and thus faster propagation cycle than us. When an animal dies of cancer after 4 years that has a life expectancy of 6 and is fertile with two, life can go on.

    When humans die at age 6 on average, we die out.

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  21. Get your facts straight by the_raptor · · Score: 3, Interesting

    No, "we" don't have thousands of ten warhead MIRV missiles (that would require a massive booster). Most MIRV missiles are in the range of two to four warheads, and the US only intends to have just over 2000 operational warheads in the near future (with a handful of two warhead MIRV missiles).

    Also from the most recent material I have read the threat of a "nuclear winter" was a gross beat up. We have had multiple volcanic events that discharged more particles into the atmosphere than would happen with optimal usage of warheads to cause a "nuclear winter", and in a normal scenario they wouldn't be used optimally for that scenario.

    Additionally long time large increases in radioactivity can not happen. Most fall out from a nuclear attack is gone in weeks, what is left is not enough to destroy life. Something like Chernobyl is far more dangerous to the bio-sphere, and the Chernobyl area is still teeming with life.

    Global thermonuclear war is not an extinction level event with even the levels of armament at the peak of the Cold War.

    --

    ========
    CINC, 4th Penguin Legion
    1. Re:Get your facts straight by Ambitwistor · · Score: 5, Informative

      Also from the most recent material I have read the threat of a "nuclear winter" was a gross beat up. We have had multiple volcanic events that discharged more particles into the atmosphere than would happen with optimal usage of warheads to cause a "nuclear winter"

      In a serious nuclear war you can get a lot more material into the air than that. Here is some very recent analysis on the subject, using one of the latest climate models. (Try this paper and this one.) This research group also does work on volcanic events, which the model's response has been tested on. They find that even a regional Indian-Pakistan exchange, each country using 50 Hiroshima-sized bombs, can have pretty significant global climate impacts (almost 1.5 C cooling). They do assume an "optimal" scenario, where the bombs are aimed at the highest population centers, causing maximum burning and thus particulate emission. The "winter" only hangs around for a decade or two, but it's worse for a "full scale" MAD scenario.

      For the full "global thermonuclear war" scenario, they see cooling of up to 30 C (~ 60 F) over some regions! The global temperature drops by 8 C, which is colder than an ice age. It doesn't last long enough to form continental ice sheets, of course. But sticking around for a decade or two is Very Bad for plant life and the animals which depend on it. (And this is just the temperature effect, not counting the reduced sunlight for photosynthesis, any burned vegetation outside cities, effects of fallout, etc.)

      A full nuclear exchange during the Cold War would have involved up to 10 gigatons of explosives. Even very large volcanic eruptions like Thera were only 0.5-1 gigatons (and I suspect that burning cities would emit more particulate matter). World War III wouldn't have been a Dinosaur Killer, and it wouldn't have sterilized the planet, but it would have had damn large effects on the biosphere.

  22. Re:Most likely scenario by Hal_Porter · · Score: 5, Funny

    Even the most retarded religious fundamentalist understands that dropping a nuclear bomb on someone who has one, or has a country which has one for a friend, isn't such a bright idea.

    snip

    Even actually been to the middle east ?

    Some of the fundamentalists BELIEVE in their god. They don't care if they all die, so long as they go to heaven.

    That's just neocon propaganda. In reality the governments of Iran and North Korea are made up of rational people who will always act in their countries' long term best interests despite their rhetoric. They are totally unlike the US government which will screw up and start wars because of the sort term interest of the ruling class and/or a miscalculation and plunge the world into chaos.

    --
    echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
  23. Re:Most likely scenario by 1u3hr · · Score: 5, Insightful
    Even actually been to the middle east ?

    I'm sure you haven't.

    Some of the fundamentalists BELIEVE in their god. They don't care if they all die, so long as they go to heaven.

    Right. And you know this how? The Saudis are rich enough to have bought all the nukes they wanted (from Pakistan, North Korea, say). And they're as devout as they come. But they haven't sent us all to paradise/hell.

    Funny thing, fundamentalist leaders don't sacrifice themselves. And that goes for Muslims as well as Christians and Communists.

  24. Ummm, probalby not so much by Sycraft-fu · · Score: 4, Insightful

    The whole nuclear winter thing is a bunch of politics getting mixed up in science. Thus far, there has been no good proof that there's any sort of reality in it. For a decent paper on it have a look at http://www.uow.edu.au/arts/sts/bmartin/pubs/88spp.html he covers some of the background of the politicization of the concept.

    As for Sagan himself on the issue, his research seems more speculative rather than concrete. Remember he also predicted that the first Iraq war would lead to global cooling because of the particulate matter generated from the oil fires Saddam threatened to set. Well indeed Saddam did set those fires as he threatened and it had no measurable impact on our climate.

    Don't confuse scientists speculating on things with real empiricism. There's lots of interesting ideas and theories, something with mathematical or computer models to back them up. That doesn't mean any of it has a thing to do with reality. That proof is separate.

    String theory would be a good example. It is, in fact, not a theory. It makes no testable prediction. It's a neat bit of math and who knows, might even be correct. However at this time all it is is a neat bit of math, a hypothesis on how things might work. It won't even be a theory until they figure out how to make some testable predictions and won't be at all something to hang your hat on until there've been some serious tests of those predictions.

    1. Re:Ummm, probalby not so much by Specter · · Score: 3, Informative

      At the risk of adding something substantive to the conversation, Physics Today just covered this topic: Environmental consequences of nuclear war.

      They seem to think nuclear winter isn't that far fetched. The link is to an HTML summary at Physics Today, but there's also a link there to the PDF of the paper.

    2. Re:Ummm, probalby not so much by Ambitwistor · · Score: 5, Informative

      Thus far, there has been no good proof that there's any sort of reality in it.

      Pretty much all the studies in your link conclude that there is reality to "nuclear winter", if by that you mean "significant cooling as a result of a large nuclear exchange". What's contested is mostly how much smoke there would actually be. Compared to that, the climatic effects of particulate matter in the atmosphere are relatively well understood. A few people criticized the early models which assumed that the atmospheric doesn't respond dynamically (note your link was published 20 years ago). Modern models which have dynamical circulation bear out the same results (e.g., here). The weak link remains assumptions about what gets injected into the air, not the models themselves. You can get very large variations in particulate emissions if you tweak your assumptions about how the war plays out.

      Don't confuse scientists speculating on things with real empiricism. There's lots of interesting ideas and theories, something with mathematical or computer models to back them up. That doesn't mean any of it has a thing to do with reality.

      Large climatic effects from particulate emissions are pretty much undeniable. You don't need a fancy theory or model to know that. Particles of that size reflect sunlight. And lo, we see it happen from volcanoes. We even know how much particulate matter the volcanoes emit. The models reproduce the observed volcanic climate effects.

      The main uncertainty, as I said, is in how much burning will take place.

      String theory would be a good example.

      Sigh.

      String theory is not a good analogy. While there may be uncertainty about nuclear winter, there is still vastly more experimental evidence underlying our understanding of particulate emissions and atmospheric circulation models than there is about string theory. Comparing the former to the most theoretical of all theoretical physics is grossly exaggerating for effect. The two levels of uncertainty are not comparable.

      It is, in fact, not a theory. It makes no testable prediction.

      Both those statements are false.

      People always try to compare string theory to a model of particle physics like the Standard Model. That's not the right comparison. String theory is a theoretical framework. The correct comparison is to quantum field theory in general.

      "Quantum field theory" makes very few testable predictions, because it makes no assumptions about what particles exist or how they interact. To make predictions, you have to construct a specific model within QFT, such as the Standard Model. That is, you have to say that quarks and leptons exist, there are three forces whose interactions take a particular form, etc.

      String theory is a theory in the same sense quantum field theory is: they are both frameworks in which you can write down predictive models. String theory by itself doesn't say much other than particles are made of strings. To make predictions, you have to write down a specific model. And you can write down something like the Standard Model (or one of its GUT generalizations) in string theory. It will make the same predictions as the SM in low energy regimes.

      The problem with string theory is not that it doesn't make testable predictions. It's just as predictive as QFT is; in fact, QFT is just a limiting case of string theory, so any prediction you make in low energy QFT, you can make in string theory. And its predictions are certainly testable, because you can write down string models that are demonstrably false (the same is true of QFT models, such as all models before the Standard Model). It's hard to think of an experiment that could falsify all possible string models, but the same is true of one that could falsify all possible quantum field theories.

      The

  25. Overpopulation MAY kill us all by mangu · · Score: 4, Interesting

    Too many people living will kill all people

    I once read an anecdote, I don't know if this is true, that in the 1700s the British set couples of goats loose in desert islands. The rationale was that castaways who eventually arrived at those islands would have a source of meat and milk. However, when someone visited those islands years later, there wasn't any life at all in the islands, only goat skeletons everywhere. The goats reproduced as long as there was food, and after they had eaten every plant they all died.

    One can imagine a similar scenario for humanity. Not that we would eat every plant on earth, but if civilization were destroyed by overpopulation, maybe some plague would kill the survivors. Look at AIDS in Africa to see how lethal is a disease that's left to evolve without control.

    Everybody being wiped out is a low-probability scenario, I agree, but not completely impossible.

  26. Much simpler. We will eat the world to death by Colin+Smith · · Score: 5, Insightful

    The world population is increasing exponentially. Nothing increases exponentially in a limited environment, so the most likely scenario is that we will simply continue growing our consumption until we run out of the resources which allow the growth. oil, water, energy etc. Then the carrying capacity of the earth will be drastically reduced and with that goes the number of living things. In the final stages of growth humans will displace most other lifeforms which compete for resources.

    You could use yeast in a bottle as an example. It grows until all the sugar is consumed, or alcohol level is too high, then it all just dies off.

    Our bottle is simply larger.

    --
    Deleted
    1. Re:Much simpler. We will eat the world to death by DougWebb · · Score: 4, Informative

      The world population is increasing exponentially.

      No, it's not. It's not even growing linearly. (Do you know what those terms mean?)

      See Wikipedia's World Population page for an article about the subject. According to the article, the world population growth rate peaked at 2.2%/year in 1963, and has been dropping since then. In real terms, the peak was 86 million new people in 1987. In 2007, there were 77 million new people.

      The article shows that the growth rate is decreasing, and it is predicted to hit zero then become negative, causing the population to crest, probably around 9-10 billion people sometime around 2050. Various unpredictable events could alter this, both in a positive way (enhanced methods of food production, including my favorite idea, large-scale hydroponic farms) and in a negative way (plague, war, climate change.) However, under the current conditions, population growth is slowing down and approaching a peak, not growing at an exponential rate.

  27. Re:DNF by Shakrai · · Score: 3, Insightful

    During a simulation, the operators do not receive the blocked popups prompting them to acknowledge the exercise, and upon seeing 'multiple targets' on their inbound radar, they instigate a return strike against the 'enemy'. And so it begins...

    That's totally unrealistic. No self-respecting Geek would use a GUI to control nuclear weapons. He'd have a command line interface and some shell scripts to automate the more tedious processes.

    --
    I want peace on earth and goodwill toward man.
    We are the United States Government! We don't do that sort of thing.
  28. Re:Magnetic reversal by Dr+La · · Score: 4, Insightful

    Humans (the genus Homo) *have* experienced, and survived, several polarity reversals in the past: both short terms events as well as major reversals like the Brunhes-Matuyama reversal 0.8 Ma ago. Some of the smaller duration events (like the Mono Lakes, Laschamp and Blake events) happened while Homo sapiens was already around.

    In other words, it seems past examples show we really do not have to fear the end of humanity when the earth geomagnetic filed reverses. There is no record of extinctions tied to reversal events.

    --
    Ceterum censeo Carthaginem delendam esse
  29. The most likely reason by Per+Wigren · · Score: 3, Insightful

    USA's war against terrorism triggers world war 3 and the revenge-thirst of both sides cause the whole planet to be destroyed by nuclear weapons.

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    My other account has a 3-digit UID.
  30. Missing Option by Arthur+Grumbine · · Score: 5, Funny

    I would vote for the LHC, cuz I saw this totally scary video on Youtube that explained how the LHC was going to create a doorway for Satan. Seriously.

    And hey, if you're going to include a science fiction, why not include a couple biblical/religious predictions? I for one, welcome our 6-winged Seraphim overlords...

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    Now that I think about it, I'm pretty sure everything I just said is completely wrong.
  31. World Ending events well documented. by WayGoneDoug · · Score: 3, Informative

    For the world to truly end, as in no more planet Earth, scenario 4 is most probable in the near term and scenario 1 inescapable in the long run. If you are defining âoeend of the worldâ as in a major extinction event, with Homo sapiens in a staring roll, then there are a bunch of options. The ones suspected of causing or contributing to major extinction events in the past are outlined in chapter six of my book, The Resilient Earth (shameless plug). Here are the main ones from the book.

    • Extraterrestrial Impacts — asteroids or comets striking Earth.
    • Massive Volcanoes — in particular the effect on climate.
    • Moving Continents — destruction of habitat due to continental drift.
    • Ice Ages — glaciation, global cooling, lowered sea levels.
    • Disappearing Oxygen — deep water overturn or methane ice.
    • Cosmic Peril — impact of cosmic rays and supernovas.
    • Coincident Causes — the âoemurder on the orient expressâ model. (all of the above).

    Our planet's past is filled with extinctions,some large, some small, some solitary. All the ages in the fossil record chronicle the departure of species from this Earth. The sweep of geologic time, comprising more than 90 recognized time periods, is partitioned by changes in the fossil record. What is most amazing is how gigantic an event has to be to be recorded in the strata. Visit theresilientearth.com for more information including pdfs of the book chapters and a link to Amazon for purchase of the paperback version.

  32. The Spaghetti Monster and the Maya, UPC codes... by Fmuctohekerr · · Score: 5, Interesting

    Has anyone else heard such a thing? Or is the local evangelical pastor mixing up his Mayan and Biblical eschatologies?

    Possibly. Most people, particularly bible-thumpers, have a problem with rational thinking in general. I am a Christian and I believe in "prophecy" but I know the difference between my faith and my "provable knowledge," and more importantly I know the difference between what our faith really teaches and what the "conventional wisdom" might be.

    In other words, and to answer your question, there are several ways to get to 2012 in Christian eschatology. Most of this stems from the "rebirth of Israel" in 1949 and some things Christ said about His return which puts us within a decade or so of some events that will supposedly take 7 years to complete, significant milestones midway, and depending on certain calculations involving the Passover, you can get there. There is no formal connection to the Maya, but I doubt anyone who believes this would listen to you. Once you've heard a pastor talk about how many letters are in the 'Reagan,' UPC barcodes, or that Obama is going to lead a Muslim revolution, you tune out. A Christian business owner I know of once even switched from Unix to Windows because he watched a consultant type 'chmod 666.'

    As soon as a Christian begins listening to their local 'inspired' pastor, watching the Discovery/History channel, reading Bible Codes, the "Left Behind" series, and throwing out logic and reason and indulging in magical thinking in general, all hope is lost for them making any sense. I don't know about your inlaws, but the 2012 stuff seems to fall into this category for me.

    There IS a "star" that falls in the Revelation to John. It does "poison the waters" and it is called "wormwood." I don't really know what all that means, but it is clear that it is NOT the "end of the world" and there is absolutely NO reason to assume that it will happen in our lifetimes, or in 2012 for that matter. People who say things like that have abandoned reason, which is (according to Wesley) one of the four key paths to working out your personal theology.

    Which is NOT to say that believing these (or some of these) prophecies are true is necessarily irrational. If you KNOW you don't have scientific or empirical proof, YET you still believe that God exists and that he spoke to one of us through a dream/hallucination/vision 2000 years ago, AND you find it consistent with other prophecies (Ezekiel, Isaiah) and things that Christ is supposed to have said, that is perfectly sound reasoning. You may be completely wrong in the end, but there is no logical error here. There are risks with assigning probabilities without all the facts, but hey, that's induction. And being human.

    When presented with a choice and there is no proof either way (such as 'is there a God') you can either ignore the question, or make your best, inductive guess. Either position is reasonable.

    Contrary to popular opinion around here, religious or philosophical beliefs are not necessarily irrational in themselves. Most of my "religious" beliefs are clearly conclusions I've come to WITHOUT conclusive evidence or proof. Knowing - and acknowledging - this is key. Most inductive reasoning (not mathematical induction) is the same, and is not necessarily illogical or without value. Logic and reason are not orthogonal to faith in a creator, or even a savior. Bible codes, Intelligent Design, "bibliolatry", and the circular reasoning rampant in religion (and of all faiths) are all very much mutually exclusive to sound reason.

    Personally, I find the Judeo-Christian prophetic tradition to be very interesting, and required reading if you want to understand the faith(s). The book of Daniel is amazing to me (though technically not a prophecy) and is so amazing the writing has been dated to much later than traditionally held because, in part... it "predicts" the future... and that's impossible.

    Let the reader decide.

    Prophecy doesn't "predict"