Archive for November, 2017

Two Clues to the Origin of Life

November 17, 2017

Two big CLUES to how life began on Earth.

1. There had to be continual energy.

Because of the energetic continuity requirement – which follows from the Darwinian evolutionary continuity principle (see Lahav (1999); Wolf and Koonin
(2007) and references therein) – the energy flows that deserve attention in evolu-
tionary context are those that remain constant on the evolutionary relevant, geolog-
ical timescale. This consideration essentially discounts the evolutionary importance of occasional energy inputs from impact bombardment, atmospheric electric
discharges, shock waves, volcanic explosions, and so on. It is also unlikely that life could notably depend on the chemical compounds that were produced or delivered during such occasional events. It seems implausible that the first life
forms could wait from one occasional event (e.g., volcanic explosion) to another to get energy and nourishment. There are no known organisms that obligatorily depend on such irregular sources of energy and matter.

2. Bases and UV.

The exclusive feature of natural
nucleobases is their unique photostability (Cadet and Vigny 1990). Since this trait is not related to the storage of genetic information, several authors (Skulachev 1969; Sagan 1973; Cadet and Vigny 1990) have noted that this property could have
been of some use when the UV flux at the surface of primordial Earth – owing to the absence of the ozone layer – was much stronger than it is now. Nucleobases apparently can absorb excess energy quanta from sugar-phosphate moieties and protect them from photo-dissociation (Goossen and Kloosterboer 1978). This feature explains why the UV damage to the backbones even of modern RNA and DNA molecules is 103–104 times less frequent than the destruction of nucleobases proper (Cadet and Vigny 1990). Under the assumption that the unique photostability of nucleobases could hardly be incidental, we have argued that
natural nucleotides should have been selected within the reach of solar light and that nucleobases may have protected the first RNA-like polymers from photo- dissociation (Mulkidjanian et al. 2003).

Both quotes from Mulkidhanian papers.

My suggestion is that life is the most stable chemical system under daily UV radiation. The problem with most origin of life scenarios is that there is nothing forcing the change except fate or fluke events. That problem is solved when the origin of live is a response to a daily cycle of UV. Then chemical systems have to change and adopt or they are destroyed.

Which is more probable, a one time pop up of 5 or so linked chemical steps that each have to occur in the proper order in a hostile environment that they are not protected in and that would quickly destroy each step, OR a chemical selection over millions of years of UV radiation?

My paper:
http://www.daviddarling.info/encyclopedia/U/UV_origin_of_life.html

For everything else see the website
tomhendricks.us

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The New Issue of Musea, Now Online

November 15, 2017

Dear Musea Readers,

The new Musea issue (a double issue) #201/#202 is out, in your mail, at a few places in Dallas, or online.

The main article, besides some catching up after the 100 pager 200th issue, is 27 CENSORED ART NEWS.
The media may be doing OK in what it covers, but it’s not good at the news it never covers!

Go to the big website tomhendricks.us and elevator up to floor #5. Then click on the Musea website.

Here is a sampling of news stories you’ve never heard anywhere.

The 27 specific censored issues in the arts, culture, and media include; no protest songs allowed on any mainstream radio in the US, public domain mess or why isn’t Mickey Mouse in the PD, political book deals with massive advances, Hollywood makes millions but theater workers make lowest wages allowed, 3 CEO’s control 80% of music (Warners Universal Sony) and 1% of musicians make 70% of the money…

Thanks to Matthew Creed, the webmaster for Musea for posting the issue.

Tom Hendricks
(editor of the 25 year old zine Musea)

MAIN Website
http://tomhendricks.us/

ZINE, MUSEA, Named one of the best ZINES by UTNE magazine. Featured on ROCKETBOOM)

First Check

November 4, 2017

Dear Readers,

This week marks a milestone of sorts for me. I got my first check for book sales. This is my first check for either book or music sales online. The check is for $49.31. First steps!


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