COSMIC ANCESTRY | Quick Guide | What'sNEW - Later - Earlier - Index | by Brig Klyce | All Rights Reserved | ||||||||
What'sNEW Archives, January–April 20074 April 2007 How did life on Earth originate? The words on Earth make it an unusually well-posed question. It is the headline of an article on Physorg.com about research at the Fraunhofer Institute for High-Speed Dynamics at Germany's Ernst-Mach-Institut (EMI). To simulate the shock wave that occurs when a meteorite crashes into a planet, an EMI team used cylindrical explosives to briefly crush a thin layer of microbes between two flat-milled stone plates (post-explosion photo at right). Although the microbes experienced pressure 400,000 times that of air at sea level, a small minority survived. The main reason [is] that the inhospitably high pressure only lasts for a fraction of a second just like the impact of a meteorite, explained team leader Ulrich Hornemann. Because meteorites are not flat, the EMI team also asked if impact pressure might be reduced in small crevices. It is. EMI's project partners at the German Aerospace Center added, ...The small fissures are also advantageous to the tiny organisms in other ways, providing them with protection on their journey through space against UV radiation, solar wind and the icy cold.... Hornemann concludes that life on Earth may have come here from other planets.
How did life on Earth originate?, Physorg.com, 3 Apr 2007. But another perspective predominates the subject. There are two mutually exclusive theories on the origin of life. The 'pioneer organism theory' claims a momentary, mechanistically definite origin by autocatalytic carbon fixation within a hot, volcanic flow in contact with transition metal catalysts.... The 'prebiotic soup theory' claims a protracted, mechanistically obscure self-organization in a cold, primitive ocean, in which organic compounds accumulated over thousands or millions of years'. This is how German chemists Claudia Huber and Günter Wächtershäuser open their defense of their now-fashionable theory involving metal catalysts. The attack came in Science from distinguished North American proponents of the older, more mainstream prebiotic soup theory. The soup-theory group agrees, "There are two main theories for the origin of life on Earth." One of the attacking soup-theorists was Stanley Miller (pictured below, c. 1953), a pioneer of that theory. Miller's protege, Jeffrey Bada, claims recent advances in soup theory at the American Chemical Society annual meeting in Chicago this week. Yet even this theory has no consensus, as RPI chemist James Ferris and Princeton astrobiologist Christopher Chyba attest in commentary in Scientific American.
After so much effort without resolution, shouldn't we consider other possibilities for the origin of life on Earth? But first, we must ask the right question.
Jeffrey L. Bada, Bruce Fegley Jr., Stanley L. Miller, Antonio Lazcano, H. James Cleaves, Robert M. Hazen and John Chalmers, "Debating Evidence for the Origin of Life on Earth" [text], 10.1126/science.315.5814.937c, p 937-938; and 29 March 2007 When the sequence of the Human genome was first published in 2001, one surprise was evidence that 100-200 human genes had come directly from bacteria. Darwinists reacted strongly. "How could this possibly happen?" wondered James Brown, leader of GlaxoSmithKline's study of the phenomenon. Michael Stanhope, a member of his team, commented, "The original claim does nothing but fuel paranoid thoughts about gene transfer." "Sure enough... flabbergasted evolutionary biologists rapidly shot the claim down," John Whitfield now reports in Nature. "The genes in question were more likely to have been present in the common ancestor of humans and bacteria but then lost in other lineages." And two geneticists at Emory University have commented, "Because selection is weak relative to drift in small populations, fixation of a laterally transferred gene in a characteristically small vertebrate population would require an exceptionally large fitness benefit."
This latter objection actually contains a crucial insight. Newly delivered genetic programs, if they are appropriate and timely, could provide a dramatic benefit. For example, new research asks if the acquisition of an advantageous gene improved human brains. But okay, suppose some or all of the 100-200 human genes were not transferred directly from bacteria. Perhaps various other transfer pathways were employed. Perhaps some of the subject genes were actually inherited vertically. In any of the scenarios preferred by darwinists, how would brain development genes evolve long before there was any need for them?
John Whitfield, "Linnaeus at 300: We are family" [text], 10.1038/446247a, p 247-249 v 446, Nature, 15 Mar 2007. 20 March 2007 20 March 2007 12 March 2007 12 February 2007
2 February 2007 Besides the lakes, Titan's dense, nitrogen-dominated atmosphere is another anomaly. Earth has the only similar atmosphere in the solar system. Could Gaian biological processes have produced these similar phenomena on both bodies?
E. R. Stofan et al., "The lakes of Titan" [abstract], 10.1038/nature05438, p 61-64 v 445, Nature, 4 January 2007.
22 January 2007
Brett J. Baker et al., "Lineages of Acidophilic Archaea Revealed by Community Genomic Analysis" [abstract], 10.1126/science.1132690, p 1933-1935 v 314, Science, 22 Dec 2006. 10 January 2007 Macey was cited in a New Yorker article suggesting that, prior to its collapse in 2001, Enron's extreme financial fragility was not concealed from the public — it was disclosed in the company's own financial statements. The condition went unnoticed because the financial statements were convoluted and took great effort to understand. Almost everyone relied on Enron itself to explain the situation. Of course, Enron explained that everything was fine. An analogous situation governs our understanding of evolution. The same researchers who deliver the scientific data are the ones who interpret it for us. Virtually all of these researchers are committed darwinists (although they may disagree about some of the details.) Naturally, they give the data thoroughly darwinian interpretations. But here as well, we may need competent intermediaries to provide unbiased explanations. As scientific specialties proliferate and narrow, the need only grows.
Malcolm Gladwell, "Open Secrets," p 44-53, The New Yorker, 8 Jan 2007. 8 January 2007
Joop M. Houtkooper and Dirk Schulze-Makuch, "A Possible Biogenic Origin for Hydrogen Peroxide on Mars: The Viking Results Reinterpreted" [8-page PDF], Arxiv.org, n.d. Dirk Schulze-Makuch and J. M. Houtkooper, "Life on Mars? Reinterpretation of the Viking Life Detection Experiments: A Possible Biogenic Origin of Hydrogen Peroxide," abstract 035.03 [all abstracts in PDF, 595 pages], AAS/AAPT Joint Meeting, Seattle Washington, 5-10 Jan 2007. New Analysis of Viking Mission Results Indicates Presence of Life on Mars, Newswise.com, 7 Jan 2007. Life on Mars! and Bacteria... are related CA webpages. John Bilon wants more, 28 Jan 2007. | ||||||||
COSMIC ANCESTRY | Quick Guide | What'sNEW - Later - Earlier - Index | by Brig Klyce | All Rights Reserved |