Forum: See theological implications of new life form?

Updated

NASA has announced that it has discovered a completely alien life form, and it didn't have to leave earth to find it:

At its conference today, NASA scientist Felisa Wolfe-Simon will announce that NASA has found a bacteria whose DNA is completely alien to what we know today. Instead of using phosphorus, the bacteria uses arsenic.

All life on Earth is made of six components: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Every being, from the smallest amoeba to the largest whale, shares the same life stream. Our DNA blocks are all the same.

But not this one. This one is completely different. Discovered in poisonous Mono Lake, California, this bacteria is made of arsenic, something that was thought to be completely impossible. While Wolfe-Simon and other scientists theorized that this could be possible, this is the first discovery. The implications of this discovery are enormous to our understanding of life itself and the possibility of finding beings in other planets that don’t have to be like planet Earth.

Read more at Wired.

One way to think of this as a game changer in the search for life beyond earth, says Carl Zimmer, is that it broadens the scope we'd using to look for life. Zimmer addresses those who are skeptical that NASA has found a form of life Zimmer addresses these as well.

Update: Commenting at our Facebook page Tom Faber says "the wired/gizmodo article is really inaccurate, I'm shocked they haven't posted a correction already. More detailed report at http://www.nytimes.com/2010/12/03/science/03arsenic.html?hp."

Comments (6)

The principle theological implication this discovery has for me is that it sufficiently shakes the foundation of scientific "surety" around the most basic ideas of our existence and reveals an order, a working, a God above and beyond human understanding. If anything, it "hath scattered the proud in the imagination of their hearts" that we humans have any idea what's going on.

I couldn't find Tom Faber's comment on the Facebook page, but I agree with him about the accuracy of the article. My two cents is here: http://tinyurl.com/352eqbm

I think the theological implications are still there and still significant, but this "discovery" doesn't force the issue in the way that it would have had the Gizmodo piece been accurate.

I hope, Patrick, you're not suggesting (as did a commenter on the "Wired" article) that "Darwin is dead", and in favor of [sic] "Intelligent Design"?

It's always dangerous to say "[Famous Dead Person] would [action that agrees w/ my POV]" . . . but I think that it's safe to say that Darwin would happily dig in the dirt
at Mono Lake (a seriously trippy place I've driven past several times, FWIW), and stick it under the microscope. Those committed to the scientific method LOVE new, different, interesting evidence, and how it shatters previous assumptions!

This is a story I can't wait to hear more about, as it unfolds...

JC Fisher

One immediate result of this report, if true, is to add confirmation to the already fairly well established position that we can infer (not know, of course) God likes diversity, from Canadian shale to the humans of today. If we can find something this remote from us (does it take phosphorus to keep its beauty?) here on earth,just think what the billions of other planets hold and have held! (Skipping over the uniqueness of Christ's sacrifice for now.)

All we need do is read or listen to any contemporary political discourse to realize that long ago some humans learned how to replace phosphorous (light) with arsenic (poison) in their fundamental makeup.

Well, this is all very exciting, but having skimmed the actual paper, there is much less to this than there appears in the news. Despite breathless headline writers, this isn't "new life". This is a typically adaptable extremophile bacterium that does something that we know is theoretically possible: replaces phosphate PO(4) with the chemically similar arsenate AsO(4).

It remains to be seen how complete the exchange is. They grew it under positive selection for arsenate incorporation, but it's almost impossible to eliminate trace phosphorous from all their reagents.

Bacteria of various types are remarkably adaptable to harsh environments--a sort of "if you can't beat it, defeat it." Think of the ones living on thermo vents on hydrogen sulfide, which is toxic as all get out to most life forms. There are acidophiles that live in conditions that would melt metal. Then there's D. radiodurans, which pays no attention to massive doses of radiation and is one of the most bizarre extremophiles out there. This doesn't "defeat Darwin" in any way. Rather, it is a prime example of evolutionary selection in action.

It's not really a surprise that some adept microbe figured out how to make use of a harsh compound: that's what microbes do.

Not clear why people are invoking theology.

More at Friends of Jake.


Susan L Forsburg PhD

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