Life May Have Evolved In Ice 159
Philip Bailey writes "An article in this month's Discover Magazine claims that some of the fundamental organic molecules required for the development of life could have spontaneously arisen within ice. Scientist Stanley Miller was responsible for seminal experiments in the 1950s in this area. He used sparks and a mixture of inorganic chemicals to test his theories, but turned to low temperature experiments in later years. He was able to create the constituents of RNA and proteins from a mixture of cyanide, ammonia and ice in trials lasting up to 25 years. A process known as eutectic freezing is thought to be the basis of these results: small pockets of liquid water, in which foreign molecules are concentrated enormously, increases the reaction rates, and more than compensates for temperature-related slowing."
Star Trek (Score:3, Funny)
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I don't think beer is required for reproduction of life (other than at times human reproduction), but from tests carried out in my fridge, I can confirm life can spontaneously arisen within ice.
Ice... (Score:5, Interesting)
Re:Ice ... & full Greenhouse Effect (Score:1, Informative)
Re:Ice... (Score:5, Insightful)
Significant because life evolved *here* (Score:2)
On the other hand, if that's *not* how life evolved here, then it wasn't significant for history here, and the Ice Planet can have it if they want.
You can adjust those theories as needed if you think Panspermia was part of the process; it seems far less like
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Sure. The Hummer hadn't been invented back then.
Re:Ice... (Score:5, Insightful)
Possibly.
One of the ongoing problems in paleobiology is the "early quiet sun". Solar models, which we now know to be extremely accurate based on solar neutrino measurements, show that the sun was considerably dimmer in the distant past. So dim that by any reasonable standard we would expect the Earth to be substantially covered with... ice.
A mechanism that would cause life to form in an icy environment would give a lot of answers to open questions.
Google "standard solar model", "early quiet sun" and "Sudbury Neutrino Observatory" for some of the background on this.
Re:Ice... (Score:5, Funny)
Re:Ice... (Score:5, Informative)
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Yes, but the atmosphere makeup has a big effect also, and the nature of the early atmosphere is still up in the air (pun). The planet itself was also warmer back then due to act
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Re:Ice... (Score:4, Informative)
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Keep in mind that multicellular life has only existed for the past 200 million years, so these aren't exactly coffee breaks we're talking about. We already knew that ice can cover most of the earth within a few millenia, and as we are quickly finding out, it can disappear even faster than that if you put in a little effort. Ice reflects light, cooling off the earth, and water absorbs light, warming it, so both
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You might want to check your facts [wikipedia.org].
And nothing I have ever read has indicated that "Earth probably has about another billion years of useful life left before the sun has its midlife crisis"; everything has always said 3 to 5 billion years.
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Yeah, a few hundred million years here, a few hundred million there, and soon you're talking about a seriously long time. But if you look at that timeline, an animal with the brains required for technology would have been wildly improbable more than 200 million years ago ago. The Cambrian explosion was 500 million years ago, but for a long time after that there weren't really any good brains to work with yet- just reptilian and amphibian structures. The neocortex evolved v
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Re:Ice... Time (Score:2)
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Science rocks.
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Before there was life, everything was dead. How did a randome mixture of dead chemicals become alive? Nobody has the slightest clue; or if they have, they haven't communicated it to me.
Here's a thought: Was there life on the planet that became earth before the object that slammed into it creating the earth and its moon existed?
-mcgrew
no muse, no jour
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The fossil record of stromatolites extends to at least 3.2 billion (10^9) years ago ; claims have been made (and disputed!) for finding microfossils of bacteria-like forms (cocci and bacilli) from a 3.56 billion-year-old chert from Australia. Some isotope specialists working on graphite inclusions in apatite crystals from 3.7 billion-year-old claim to see isotope ratios suggestive of (but not p
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In all of those cases, there's a mechanism. The ID folks don't seem to have a mechanism, probably because if they actually described the scenario they were thinking of, it would look a whole lot like biblical creationism, which wouldn't fly in public schools. If they can come up with a testable mechanism and actually describe what they're looking for, then I'll gladly call it science. Until then,
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My point is that in a murder case, we realize that it's murder because it looks like murders we've seen before. On
Thank You! (Score:2)
I'm so happy to see things back to normal for this article -- you've no idea.
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Reminds me of a classic Robert Frost poem (Score:4, Funny)
To be sure, some sparks were still needed for the ice theory but there you have it.
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Ginnungagap (Score:2)
And the article claims it's a new theory. Bah! Bah, I say!
oblig. (Score:5, Funny)
All hail Tux!
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Why so few cryophiles? (Score:5, Insightful)
Instead, we seem to see limited scattering species that have independently evolved various forms of ice-tolerance. I could be wrong. If so, I'd love to hear if biologists have found evidence for a widely shared mechanism for ice-tolerance that speaks to a frozen beginning.
Re:Why so few cryophiles? (Score:5, Interesting)
Re:Why so few cryophiles? (Score:4, Funny)
Watermelon snow (Score:1)
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Re:Why so few cryophiles? (Score:4, Interesting)
Of course it is a little bit more involved than that and this is only my vague layman understanding. Someone else can fill in all the details.
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Re:Why so few cryophiles? (Score:5, Informative)
It's FUD just like the anti-global warming FUD they have been peddling for the last 20yrs. Here is a random site [fromthewilderness.com] that debunks the abiotic oil theory, there are many more out there.
And yes, a "-1 wrong" mod would come in handy, but for this kind of thing a "-1 bullshit" is more appropriate.
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How does claiming that global warming is not occurring spread "fear, uncertainty, and doubt"? FUD isn't even necessarily false. You really need to watch your terminology for corporate marketing misdeeds. Abiotic oil and anti-global warming are marketing lies, not FUD. (Actually, deep abiotic oil seems plausible to me, but may not be of any economic relevance.)
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Because there would likely be a lot more oil in very deep deposits that haven't even been looked at.
No matter where it comes from, there's going to be a point where we've exhausted the deposits we can reasonably get access to.
Not necessarily. In fact, one problem with inorganic oil is that we can probably keep burning it until we run out of oxygen entirely.
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No matter what the origin of the oil is whether biogenic or not, if the rate of creation is a lot lower than the rate of consumption, you will have "peak oil". The wells definitely aren't being filled up at the same rate they are being emptied.
Which oil companies are saying that we will never run out of oil? They'll just raise prices as it gets scarce, and if there's a good alternative energy source, you can be sure they'd try to get into that business.
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http://abc.net.au/science/crude/ [abc.net.au]
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Oxygen Catastrophe? (Score:4, Interesting)
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With ice in abundance the ice tolerant creatures have just as much, maybe a greater chance of surviving.
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I would think that the Oxygen Catastrophe would have selected more towards the cryophiles, not away. This, also, is wild speculation.
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bacterial evolution (Score:2)
Bacteria have pretty efficient genomes; any such mechanisms would have been long lost in descendants that don't live in the ice.
Unless the Earth experienced a 100% ice-free period,
It probably did, but not even that is necessary: even if there had always been polar ice caps, there is no region where ice has survived permanently. Therefore, any of the original ice dwelling orga
Some say that life evolved in fire... (Score:5, Interesting)
From what I've tasted of desire
I hold with those who favor fire
But if it had to bootstrap twice
I think I know enough of genes
To say that for mutation ice
Is also keen
And would suffice
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what does it mean ? (Score:4, Insightful)
I don't know so much that they are intending to say that the earliest life forms were created in ice.
But I don't know, I didn't read the article. Just taking a break from the superbowl.
Discover Magazine (Score:1)
Pedantic, yes, but errors in the summary irritate me no end.
Ice Ice Baby... (Score:5, Funny)
Another early experiment, in which he added Vanilla [wikipedia.org] to the mix still haunts Professor Miller to this day.
Chuck Norris answered this recently. (Score:3)
"It's funny. It's cute. But here's what I really think about the theory of evolution: It's not real. It is not the way we got here. In fact, the life you see on this planet is really just a list of creatures God has allowed to live. We are not creations of random chance. We are not accidents. There is a God, a Creator, who made you and me. We were made in His image, which separates us from all other creatures."
http://worldnetdaily.com/news/article.asp?ARTICLE_ID=52567 [worldnetdaily.com]
Damn it. (Score:3, Funny)
I'd believe it started in the YELLOW ice... (Score:3, Funny)
Irony (Score:2)
Seriously.
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Earth's Temp (Score:3, Insightful)
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Is that a serious question? The answer is no, because the only way to stop evolution is to extinguish all life as we know it.
As long as any organism is alive and has the ability to reproduce with genetic drift, life will continue to evolve. Besides, our predictions of global temperature increase by the end of the century are all below increases of 15C. Species which are adapted to higher temperatures, like Thermus aquaticus, will certainly not be wiped out by global
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Of course, even the bad scenarii are not doomsday ones, life will not disapear, neither will mankind.
However, the worst scenarii mean that the changes will happen in a very short duration, far too short for an evolutionary adaptation. Some species could move to more suited areas, but there is a risk many other would face the fate of the mamooth and suffer extinction. Of course, people could move around crops to match the new climate, but there will still be a risk of losing a lot of
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Utmost respect for Dr Millers work. (Score:2, Insightful)
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It doesn't really matter how hard it is to make a molecule that will be self-replicating. Just make lots of molecules. Eventually, the self-replicating ones will self-replicate and take over the world. You only need one. The ones that don't replicate won't be heard from again. The whole random mutation and natural
EXTREME DANGER READ NOW!!! (Score:3, Funny)
Re:And it might have evolved in a Chicken McNugget (Score:5, Insightful)
The history tells the future argument (Score:2)
To paraphrase: bullshit.
Re:The history tells the future argument (Score:4, Insightful)
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My point is that the idea that you should learn history because that tells you where you are going
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On our course we used a turing machine simulator for a couple of weeks. You can't get much more historical/fundamental than that. It was useful to look at the nucleus of the science and the mathematical foundations. It gave us insight into the basis of all computers, and how/where things were likely not to change in future.
Same can be said of life. Looking at our origins and our species' history helps us explain things like the coccyx.
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Give yourself a pat on the back, and -10 modpoints (Score:4, Insightful)
If we want to look for life on other planets then this research may help us, if it can be shown life is possible or even likely on frozen planets.
"We're here so let's make the most of it."
Yeah, let's not study ourselves, our origins, or science at all. Why bother with history? We're here, lets make the most of it.
Genius.
Re:And it might have evolved in a Chicken McNugget (Score:4, Insightful)
you'd better believe it (Score:2, Insightful)
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