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New Evidence About 'The Great Dying' 250 Million Years Ago

PornMaster writes "The Guardian is reporting that scientists have found the first direct evidence that the killoff of 80% of land species and 95% of marine species 2 billion years ago was due to a meteor." The project web site has more info, maps, etc.

25 of 657 comments (clear)

  1. until now by millahtime · · Score: 1, Insightful

    So, they are saying that until now there has been no direct evidence and now they just have one piece.

    Doesn't that make believing it a little sketchy. On such little evidence.

    1. Re:until now by rokzy · · Score: 5, Insightful

      there can be hundreds of pieces of indirect evidence and logical arguments supporting a meteor hit.

      this is the first direct evidence i.e. they found the meteor (or what's left of it).

      I'd say that if everything points to a meteor, and then you find the actual meteor, then that's as far from "sketchy" as possible and has very little to do with "belief".

  2. "first direct evidence" by jbellis · · Score: 4, Insightful

    not "first evidence"...

    just like in judicial cases you can have circumstantial evidence, scientific hypotheses can be supported by indirect evidence.

  3. Hogwash by Anonymous Coward · · Score: 2, Insightful

    "...scientists have found the first direct evidence..."

    Direct evidence my arse. Scientists have found a few holes in the ground and some sediments. It amazes me that so many people just blindly accept these theories (and they are only theories) about meteors wiping most of the life out on earth long ago.

  4. Re:I've always found those stats suspect by Blastercorps · · Score: 2, Insightful

    250mil years of evolution? That sounds about right.

  5. Where's the Irridium by BrownDwarf · · Score: 5, Insightful

    Finding a very thin layer of irridium in the rocks laid down at the very end of the Permian would be compelling evidence. A layer of irridium, together with the crater in the Gulf of Mexico off the Mexican coast, made a good argument of what caused the dinosaurs to go at the end of the Cretaceous period.

  6. Re:I've always found those stats suspect by Anonymous Coward · · Score: 1, Insightful

    Yup. The question isn't whether or not they died, we know they did. Just HOW they died.

  7. Re:I've always found those stats suspect by nes11 · · Score: 3, Insightful

    WHAT?!? somebody actually questions the theory of evolution?? He must be a fundamentalist! Off with his head!

    actually, if you look at the hard evidence, the whole concept of macro-evolution is nothing more than a wild guess in the dark. the theory is full of holes and most of the logic doesn't completely add up. but i guess people have to believe in something.

  8. Don't tell the evolutionists.... by gillbates · · Score: 0, Insightful

    At first, abiogenesis was centered around the notion that a possible, but highly unlikely, chain of events happened billions of years ago. Supposedly, through billions of years of evolution, man evolved from creatures more primitive.

    The theory was made at least partially plausible by the "logic of big numbers" - given enough time, anything is bound to happen, no matter how small the probability. Their explanation relied on faith in statistics, rather than God, and contained very little that was actually scientific. This explanation was little better than the creationist dogma that God created the Universe, Earth, and Man in a literally 7 24-hour periods.

    Now, instead of four billion years, they've got to explain in it 250 million years. Given that they've already posited that mankind's ancestors appeared about 50 million years ago, they're down to a mere 200 million years to go from single-celled to upright and walking.

    What really gets me is that none of the so called "scientific" origin-of-life theories are logically sound. Nor are they scientific, in the truest sense of the word - their hypotheses cannot be tested.

    Ultimately, I think, it comes down to faith. I'm not ashamed to admit that I don't know the mechanisms by which life came about - whether God created mankind as a series of steps taking millions of years, or constructed modern man in a single instant of inspired creation. But, because I believe in God, I don't risk having my beliefs invalidated by a scientific discovery.

    I think that this is hard point to get across. Evolutionary biology is not necessarily contradictory to faith in God. However, faith in evolution as the ultimate explanation for our existence leaves much to be desired, and because atheists have accepted this notion as a de-facto religion, true scientific progress is often held up by such biases. No atheist scientist could ever admit any finding which would cast doubt on the pre-conceived notions of abiogenisis, because to do so would destroy his religion. Christianity, OTOH, is not diminished by scientific discovery. Rather, science often illumines our knowledge of God - we discover the perfection of the Creator in witnessing the beauty of the created.

    --
    The society for a thought-free internet welcomes you.
    1. Re:Don't tell the evolutionists.... by Xcott+Craver · · Score: 5, Insightful
      Now, instead of four billion years, they've got to explain in it 250 million years. Given that they've already posited that mankind's ancestors appeared about 50 million years ago, they're down to a mere 200 million years to go from single-celled to upright and walking.

      How on Earth you arrive at that conclusion? The big extinction didn't kill everything or wind speciation back to step 1. The meteor didn't kill off 80% of species and then magically devolve the remaining 20%.

      Ultimately, I think, it comes down to faith.

      No, no it does not. These scientific theories really do work, as you witness every day when you use a computer or a TV set or a DVD player. Whether scientists are right about, say, the speed of light or radioactivity does not need to be taken on faith.

      Remember, creationists aren't just disputing some evolutionary biologists somewhere. They have to dispute physics, geology, cosmology, basically anything that gives you a dating method or shows what the place was like billions of years ago. Just about every branch of science eventually matures to the point that it burps out evidence the Earth or universe is old.

      X

    2. Re:Don't tell the evolutionists.... by Troed · · Score: 3, Insightful

      they're down to a mere 200 million years to go from single-celled to upright and walking.

      No.

      Why post about something you clearly have no interest in understanding?

      _All life_ didn't die out 250M years ago. All the _evolution_ done up until then lived on.

    3. Re:Don't tell the evolutionists.... by dustmite · · Score: 2, Insightful

      Given that they've already posited that mankind's ancestors appeared about 50 million years ago, they're down to a mere 200 million years to go from single-celled to upright and walking.

      Huh? Are you confused or just stupid?

      And the worst part is you've been modded up as insightful. It's insane. Come on people, visit a goddamn library, or do some googling, or something! This post is total BS, and it doesn't take a genuis to confirm against actual scientific theories that this is total BS.

    4. Re:Don't tell the evolutionists.... by jeffkjo1 · · Score: 3, Insightful

      From Carl Sagan:

      "In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. ... The method of science is tried and true. It is not perfect, it's just the best we have. And to abandon it, with its skeptical protocols, is the pathway to a dark age.[1] "

  9. Re:I've always found those stats suspect by Jim+Starx · · Score: 2, Insightful

    The article doesn't question the theory of evolution....

    --
    The darkness... controls the music. The music... controls the soul.
  10. Um ... by dustmite · · Score: 5, Insightful

    You're not "supposed to" believe it, where did you get that idea? Clearly you have no idea how science functions, why don't you learn what science is before publicly criticizing it? It is obvious from your post that you don't even understand the basics of the scientific method, despite the fact that you think you "know a bit" about science.

    If you actually read up a bit about this, the scientists here are basically saying that this MIGHT BE a possible cause of one of the great extinctions (read "more research required"). Furthermore, this is now just one new "HYPOTHESIS" against two other major "HYPOTHESES" that alread exist that proposing other "POSSIBLE" reasons for this great extinction.

    Certainly nobody has asked you to "believe" any of these possible explanations, and none of the scientists involved have claimed that their hypotheses are 'the truth' either. In fact, with things like this, scientists never really decide that any one theory is "the truth" - they basically often settle on a theory that is "the most likely" - they, however, ALWAYS "leave the door open" to other possible explanations that may appear in future that are better. Always. (This is all in refreshing contrast to religions like Christianity, where you are in fact expected to 100% completely believe something regardless of whether or not there is really evidence for it.)

    The slashdot blurb has also spun this thing completely wrong. So even worse, now you make decisions about scientific theories based on a slashdot blurb. Sheesh.

    1. Re:Um ... by berzerke · · Score: 3, Insightful

      ...they basically often settle on a theory that is "the most likely" - they, however, ALWAYS "leave the door open" to other possible explanations that may appear in future that are better...

      While true in theory, my observations differ somewhat from your statement. "Radical" new ideas are often ridiculed for quite a while before the evidence mounts especially when made by a non famous scientist. Plate tectonics was first proposed by a meterologist, not a geologist, and he was ridiculed for his theory, even though it is now the accepted theory.

      I remember reading articles about a meteor wiping out the dinosaur theory and how the author took quite a (figurative) beating over that theory.

      Going back even farther, Galileo wasn't the first to challenge Aristole's(I think it was his) law that the heavier the object, the faster it falls. He was just the first to do it and live because he had protection from some noble. Earlier scientist were thought to be possessed by demons and had to be helped by being given a beating until the demons were driven out and they returned to their senses. (Side note: Technically, Galileo was wrong. Heavier objects in a vacuum will fall faster at any temperature above absolute zero. It has to do with differences between inertial and gravitational masses. The difference is *extremely* small however.)

      Of course, not all "radical" new theories pan out, but many great advances have been made by those brave souls who propose new theories.

      Even wrong theories can be benefical. Look at Columbus. The dispute Columbus fought was not round Earth versus flat Earth as is commonly believed. It was accepted that the Earth was round by that time. The dispute was over size. Columbus, as it turns out, thought the Earth was much smaller than it actually is, and did fail in his quest to sail to China (although he died still thinking he made it). But he did discover 2 unknown (to Europeans at that time) new continents. The atrocities commited on this new discovery is another story though.

    2. Re:Um ... by orius_khan · · Score: 2, Insightful
      Heck, I *never* believe 100% what I'm told at church. In fact, half the time I find myself saying, "WTF? That's not true?"

      So WHY do you keep going back?? Cause you know, when I hear somebody talking, and say to myself, "Wow, that guy's completely full of shit!", my next thought is always "Let's go visit him next week and see what else he has to say!"
      But...it gives me something to think about.

      Do you really need a regular dogmatic guilt trip session to spark creative thoughts for you? Here's something to think about: Imagine there's no God, and no heaven or hell. Imagine that this life is all there is. Assuming these things are true, how would you live your life differently?
      --
      Sometimes the best solution to morale problems is just to fire all the unhappy people.
  11. Re:Gotta raise the BS flag here... by !Freeky2BGeeky · · Score: 3, Insightful

    It would seem the moderators don't see alternative viewpoints as neither valid nor worthy of discussion. I thought /. was about voicing on-topic opinions. Apparently I was wrong.

    --

    Visualize Whirled Peas

  12. Re:What's An Order Of Magnitude Among Friends? by Stalus · · Score: 3, Insightful

    Um, if you RTFA, it never says that the murder is 2bn years old. It states the the history of life is 2bn years old. And if you read his post, you'll realize that he's talking about the headline, which says "New clues to 2bn-year-old murder". Don't be so liberal with your RTFA's. On a side note, I think this headline highlights a trend I've been seeing in which internet news agencies create misleading or incorrect headlines just to get people to click on them. They're generally remotely related, but tend to say things that aren't supported or even covered by the articles.

  13. Re:ah, but if the church by Rhubarb+Crumble · · Score: 2, Insightful
    ah, but when the church uses the term evidence but it's not direct evidence many say that because it's not direct evidence that you can't believe what is derived.

    Like what?

    But, when the science claims that then have evidence but no direct evidence I am supposed to believe it.

    No. You are supposed to think that it represents a likely scenario and it is a plausible explanation of what happened. There is no "belief" in science, other than as a figure of speech.

  14. Re:250 Million years, give or take by Azghoul · · Score: 2, Insightful

    That's just it. Good science (as opposed to junk science) does not assume anything of the sort.

    You observe. You collect evidence. Then you interpret the evidence to see if it matches any posited hypothesis. Usually, you put forth an hypothesis first, and then you test to see if your evidence fits.

    You do not massage data to make it fit, unless you have an agenda to fulfill.

  15. Re:250 Million years, give or take by Anonymous Coward · · Score: 1, Insightful

    "Evidence" can often be made to support any number of theories, among them the 4.5 billion year age of the earth or in this case the cause of a mass extinction. In the future we will know more, but we should never assume we have all the answers right now.


    The evidence in favor of a 4.5 billion year age of the Earth is vastly better than the evidence ever was in favor of phlogiston, with corroboration coming from almost every field of science. Expecting that figure to be overturned is like expecting future science to reveal that the Earth is flat.

    On the other hand, there's still a lot of room to overturn mass extinction theories.
  16. Re:sneaky plan by Decaff · · Score: 2, Insightful

    Leading univeristies have proven they can accually stop light, hold it in place, then speed it up on their command.

    Well, firstly, that is not in empty space, which as I hope even you believe, is what exists between the stars.

    Secondly, if light was stopped for a while, that would mean it took *longer* to get here from the stars, which would mean they were *even older* than millions of years!

    For your argument to work, light would need to be speeded up. No-one has done that, of course.

    (Also, they aren't really stopping light at all: they are simply storing the information in the light and then re-creating the light later).

  17. Re:ah, but if the church by Psymunn · · Score: 2, Insightful

    when something really big hits something else really fast it tends to break up just a bit
    if you notice, the moon has a lot of craters but no bolders sitting in the middle of them

    --
    The Neo-Bohemian Techno-Socialist
  18. Re:Flirtation with Madness by Coulson · · Score: 2, Insightful

    It's a fight for mindshare.

    This is absolutely correct. It reflects very accurately the situation in which we find ourselves: athiests feel threatened by the religious, faithful feel threatened by the non-believers. Why are we threatened? On the whole all of the people involved are decent, respectable folk, who would enjoy chatting with you on the street.

    Once the battle lines are drawn (athiest vs. religious, liberal vs. conservative), though, it gets ugly. People on feel they are being attacked, and get worried that their way of life is being threatened by people who don't think as they do.

    The greatest fear is that someone who thinks the other way will get into power, then force their beliefs on everyone... [Clinton, Bush, control of the SCOTUS]

    Or worse yet, what if they indoctrinate the next generation! Hence the anger against the perceived secular/liberal control of the education system. This is why home schooling is becoming so popular: "They won't teach my child their godless/heathen/hippie ways! I won't have my kid brought up like that!"

    If people believed that the President, or public school teachers, or the Supreme Court, or the local pastor, were rational, respectful people, who would do right by the community, this wouldn't be a problem.