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By looking at information stored in chemistry, says former NASA fellow, life from non-life can be explained

An outstanding question in the field of evolutionary biology and biochemistry is how the complex, fragile biochemicals that made up life arose and transformed biomaterial in the early Earth from non-living to the earliest "living" organisms.  Some researchers have looked for quasi-alive constructs like prions or viruses for clues.

But a new paper by Paul Davies, an Arizona State University Regents' Professor and director of the Beyond Center for Fundamental Concepts in Science, and Sara Walker, a NASA post-doctoral fellow at the Beyond Center, published in the journal Interface suggests that researchers are approaching the problem in the wrong way.

They suggest that rather looking at the "hardware" (biochemicals), they look at the "software" (chemically encoding information).  The authors suggest that the defining line between the living and non-living is the ability to manage encoded information, thus the key question is how this information handling arose.

Spark of Life
Could the clue to how life arose lie in how it encodes information?

Comments Prof. Walker, "When we describe biological processes we typically use informational narratives -- cells send out signals, developmental programs are run, coded instructions are read, genomic data are transmitted between generations and so forth.  So identifying life's origin in the way information is processed and managed can open up new avenues for research."

"Chemical based approaches have stalled at a very early stage of chemical complexity -- very far from anything we would consider 'alive.' More seriously they suffer from conceptual shortcomings in that they fail to distinguish between chemistry and biology."

"We propose that the transition from non-life to life is unique and definable," Prof. Davies adds, "We suggest that life may be characterized by its distinctive and active use of information, thus providing a roadmap to identify rigorous criteria for the emergence of life. This is in sharp contrast to a century of thought in which the transition to life has been cast as a problem of chemistry, with the goal of identifying a plausible reaction pathway from chemical mixtures to a living entity."

"To a physicist or chemist life seems like 'magic matter.  It behaves in extraordinary ways that are unmatched in any other complex physical or chemical system. Such lifelike properties include autonomy, adaptability and goal-oriented behavior -- the ability to harness chemical reactions to enact a pre-programmed agenda, rather than being a slave to those reactions."

"We believe the transition in the informational architecture of chemical networks is akin to a phase transition in physics, and we place special emphasis on the top-down information flow in which the system as a whole gains causal purchase over its components.  This approach will reveal how the logical organization of biological replicators differs crucially from trivial replication associated with crystals (non-life). By addressing the causal role of information directly, many of the baffling qualities of life are explained."

Crystals are also self-replicating, but they lack the flexibility of life.
[Image Source:  Giovanni Dall'Orto]

If that all sounds a bit abstract, it is.

But basically it seems that the pair are arguing that by looking at differences between the self-replicating information in biochemicals (e.g. RNA) verus self-replication information in inorganic/non-living constructs (e.g. crystals), researchers may be able to retrace the process of how life arose on Earth more easily than if they merely focus on painstakingly mixing chemical constituents, hoping something arises.

Sources: Interface [via Arvix], Arizona State Univ.

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RE: Personally
By gladiatorua on 12/13/2012 8:40:43 PM , Rating: 3
I feel; given what we know about the number of planets that orbit distant stars its arrogant for us to think all life originated here on earth.
A more likely scenario i think is that Panspermia brought life here and that it is as old as the universe.
Sure, with universe this big, it would be unwise to assume that life is unique to Earth. But to assume that life developed so close to Earth or safely traveled through HUGE distances through space and landed into appropriate environment? Very unlikely.

RE: Personally
By Dr of crap on 12/14/2012 8:14:27 AM , Rating: 2
You Do realize that was not meant to be taken as a truth?

RE: Personally
By LRonaldHubbs on 12/14/2012 10:26:53 AM , Rating: 2
Please explain. The OP appeared serious to me...

RE: Personally
By Ammohunt on 12/14/2012 11:42:28 AM , Rating: 2
Your clues are terms like "i feel" and "i think" these are indicators of opinion that i purposefully placed in my statement.

RE: Personally
By LRonaldHubbs on 12/14/2012 12:40:14 PM , Rating: 2
"I feel" and "I think" indicate that the post is your opinion. They do not indicate that you aren't being serious. There are plenty of people who believe something similar to what you wrote, and crazier things have been written on here before. The only reasonable assumption, without a /sarcasm, was that you were serious.

RE: Personally
By Ammohunt on 12/14/2012 3:34:02 PM , Rating: 2
Uh..I am being serious panispermia its very plausible in my mind more plausible then all life originated on earth. When they discover microbial life on Mars it will just add to the idea.

RE: Personally
By nafhan on 12/14/2012 1:15:39 PM , Rating: 2
I thought you were being serious as well... :)

"So, I think the same thing of the music industry. They can't say that they're losing money, you know what I'm saying. They just probably don't have the same surplus that they had." -- Wu-Tang Clan founder RZA

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