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Gymnastic Enzyme Acts Like Logic Gate 07/31/2004 An enzyme named vinculin undergoes drastic conformational changes, reports William A. Weis in the July 29 issue of Nature.1 Vinculin, with over a thousand amino acid links, is important at membrane junctions for transporting materials in and out of the cell. It helps cellular glue exit the membrane so that neighboring cells can adhere to one another, such as in epithelial tissues. Weis reports on recent studies that show vinculin undergoes radical conformational changes during its action. It will only build the adhesive junction when the necessary components are in place. Nothing happens unless the participants are ready; the binding energy of several partners is needed to overcome the thermodynamic and perhaps kinetic barriers to activation, he says. Viewed in this way, vinculin functions as a logical AND gate, in which binding of two partners is required to generate an output, in this case a stable multi-protein complex (emphasis added). Whats more, this automatic regulation is essential for its function; it prevents inappropriate assembly if the amount of product is unstable. 1William A. Weis, Cell biology: How to build a cell junction, Nature 430, 513 - 515 (29 July 2004); doi:10.1038/430513a. Logic, logic gates, regulation: this is the language of intelligent design. Each of the contacts formed during the radical conformational changes of this complicated enzyme is finely tuned to its substrates, and finely tuned to the concentration of ingredients in the cell. And these finely tuned contacts are determined by the specificity of the sequence of amino acids in this protein, each coded in another languagethe language of DNA. At every step, this system only makes sense in the context of intelligent design.Darwinists Still Writing the Origin of Species 07/30/2004 A new book on the origin of species has come out. In the July 30 issue of Science,1 Benjamin K. Blackman and Loren H. Rieseberg review Jerry Coyne and H. Allen Orrs new book, Speciation (Sinauer, 2004, 557 pp.). The reviewers first describe the subject matter: The last two decades in particular have brought major advances in molecular genetics, comparative analysis, mathematical theory, and molecular phylogenetics; speciation has consequently matured from a field fraught with untestable ideas to one reaching clear, well-supported conclusions [sic] (emphasis added in all quotes.) Presumably some of those untestable ideas hark back to Darwin. So in what ways does this book surpass the one penned by the masters 1859 opus? The reviewers outdo themselves praising the substance and style of this new book: Jerry Coyne and Allen Orrs Speciation provides a much-needed review of these developments. The exceedingly well-written and persuasive text eschews speculation. The authors instead resolutely develop testable criteria for distinguishing alternative hypotheses about evolutionary processes that may result in similar biological patterns, critically evaluate how theoretical and empirical results meet the burden of proof, and actively confront important caveats and unresolved questions with practical suggestions. It is a testament both to the authors and to the state of the field that the book provides such a robust picture of the origin of species.Well, this has to be good, then. The leading definition of species is the biological species concept (BSC), that distinguishes species by the ability to interbreed. This is not much help for systematists and paleontologists, the reviewers admit, but the book tackles what they view as the basic question of the species problem, which is, why do sexually reproducing organisms fall into discrete clusters? Here, the debate revolves around allopatric vs. sympatric speciation (see 01/15/2003 headline). Coyne and Orr take the majority view that speciation is essentially synonymous with reproductive isolation: for example, two populations of squirrels might get isolated by a canyon between them, and evolve into species that can no longer interbreed. This is called allopatric speciation. It does not require a geographic barrier, necessarily, but differs sharply from the view of sympatric speciation, which proposes that species might diverge right within a single interbreeding population. The book gives ear to the sympatric concept but considers most cases to be allopatric. So the question becomes, how do reproductive barriers arise? And how can biologists find evidence of positive selection for traits after isolation? This becomes the core of the book, according to the reviewers. Related issues involve teasing out the effects of natural and sexual selection: Speciation convincingly [sic] presents evidence for several once-unpopular theories that have returned to dominate current thinking. Most important among these is the primacy of natural and sexual selection over drift in driving speciation. Signatures of positive selection on genes involved in postzygotic isolation and reproductive proteins as well as experimental evidence from both the lab and field connect adaptation and sexual selection to reproductive isolation. Another major finding is the congruence of the Dobzhansky-Muller model for the evolution of postzygotic isolation with the genetics of hybrid incompatibilities in many natural systems. In contrast, classical models of chromosomal speciation remain unpopular. Instead, chromosomal rearrangements are now cast as facilitators, rather than causal agents, of reproductive isolation because reduced recombination within these regions restricts gene flow, thereby enabling the accumulation of selected differences and hybrid incompatibilities.The book treats controversial questions reinforcement, sympatric speciation, and diploid hybrid (recombinational) speciation, although claiming evidence only occurs for the latter. It also treats polyploidy in plants as a mechanism for speciation. Treatments of other plant-related topics like mating system isolation or hybridization are insightful as well, but may raise eyebrows, but the book downplays other theories like cryptic introgression or hybrid speciation. Overall, the reviewers give high marks to the authors; The book is a rich and thorough review, critique, and synthesis of recent literature that is sure to become a classic read for anyone interested in speciation. 1Benjamin K. Blackman and Loren H. Rieseberg, Evolution: How Species Arise, Science, Vol 305, Issue 5684, 612-613, 30 July 2004, [DOI: 10.1126/science.1101064]. So is this the book to supersede Charlies, and to answer the question of how bacteria turn into humans over time? Not likely. Every mechanism mentioned, controversial or not, appears aimed at explaining slight variations, sometimes misleadingly called microevolution. Horizontal variation is not controversial even among staunch creationists. If evolutionists expect people to believe we evolved from slime, they need to do better than extrapolate low-level trends, and they need to show that is indeed what happened by providing the intermediates and fossils. Talk about the origin of species if you please, but what about the origin of phyla? (See 07/28/2004 headline).Your Brain Learned Physics and Calculus Before You Did 07/29/2004 Tilt your head to the right while moving to the left. The neurons in your brain just solved Newtons equations of motion, and performed complex vector calculus equations almost instantaneously. Thats what four neurologists Washington University of Medicine (St. Louis, MO) essentially claimed in Nature July 29,1 describing how your brain interprets the information coming from multiple sensory inputs. The title of their article says it: Neurons compute internal models of the physical laws of motion. The article is filled with equations that the neurons have to solve correctly to help you determine whether the motion you feel means you are moving left or right, tilting, or a combination of the two. The signals come from the otoliths in your inner ear (see 10/10/2003 headline) and from the fluid in the semicircular canals. What if these inputs give contradictory information? The net vectors of the inputs could cancel each other out, or sum up to give a wrong impression. The scientists mapped out the equations that would have to be solved to distinguish between the components of translational and gravitational motion, regardless of phase, and then experimented on monkeys while watching the activity of the brain. They found that the way neurons fire in response to the stimuli match predictions of how the information would have to be parsed to fit the terms of the equation. In conclusion, they state: These results illustrate a direct correlation between cell firing rates and the equations of motion, as applied to movement in a gravitational environment and the physics of the external world. A neural basis for an internal model representation of the relationship between the physical environment and either the sensory detectors or the motor apparatus has only recently begun to be explored. Here we have shown evidence that, in support of theoretical predictions, subcortical neural populations might provide a distributed solution to the inertial motion detection problem. (Emphasis added.) 1Angelaki, Shaikh, Green and Dickman, Neurons compute internal models of the physical laws of motion, Nature 430, 560 - 564 (29 July 2004); doi:10.1038/nature02754. As expected, this paper makes no attempt to explain how such a system could have evolved. The more detail provided in a research paper about the workings of a biological system, the less apt are the authors to attribute it to time and chance.Solar Systems Defy Theories 07/29/2004 Stuart Ross Taylor (Australian National University, Canberra) feels left behind. The astronomers have their nice, neat H-R diagrams to explain stars, but no such diagram exists for planetary scientists. Our hodgepodge collection of planets, moons and small bodies defies classification, to say nothing of the extrasolar planets that have been discovered so far, mostly in wild elliptical orbits or close-in to the parent stars. Writing in the July 29 issue of Nature,1 he compares stellar and planetary astronomy: By contrast, planets are individuals that show few systematic relationships and have resisted attempts at classification or even definition, as witnessed in the furore [sic] over the status of Pluto, which is an eccentric dwarf when placed among the planets, but is better suited to be the king of the many icy bodies in the Kuiper belt. So far, there is no planetary equivalent of the Hertzsprung-Russell diagram. Even if we arrive at a satisfactory explanation for the formation and evolution [sic] of our planetary system, there is no guarantee that this will apply elsewhere. Perhaps this is the reason, as Stephen Brush has commented, that the origin of the Solar System represents one of the oldest unsolved problems in science. (Emphasis added in all quotes.)Taylor says this in spite of mentioning in the first paragraph that Laplace in 1796 had explained the planets as condensing from a solar nebula. As an example of the difficulties in explaining the origin of planets, he points to the long history of trying to explain Earth, from Hutton (1788) to plate tectonics. But even todays theory of plate tectonics may be too specialized to apply anywhere else: But this process is unique to the Earth among the planets of the Solar System and was only made possible by the late stochastic addition of a water content of a few hundred parts per million [sic] Many of the difficulties in trying to understand the evolution of the Moon [sic] arose from the uncritical attempts to apply our hard-won experience with wetter terrestrial rocks to those from our bone-dry satellite.Another example of the difficulty is comparing Venus and Earth. They should be twins, but the Earth resembles Venus much as Dr Jekyll resembled Mr Hyde. What causes the difference between these twins? The short answer is water, he gives as if a rote answer out of the textbook, but As we search for terrestrial-like planets elsewhere, we need to find out the reasons for these differences and the conditions that allow these diverse bodies to form at all. That can only come from a new interdisciplinary approach, a distinct new mindset somewhere between the approaches of astronomers who want to treat planets mathematically like stars and geologists, who want to generalize from their detective-like experience with the Earth. 1Stuart Ross Taylor, Why cant planets be like stars? Nature 430, 509 (29 July 2004); doi:10.1038/430509a. The fact that Taylor raises these questions means that the typical rote answers given simplistically in textbooks are wrong. He sounds like astronomers are at square one explaining the planets, despite 208 years since Laplace famously remarked, when asked where God fit into his model, I have no need of that hypothesis. Well, put up or shut up. Were still waiting. We know a lot of things now that Laplace did not, and the trend of recent discoveries has been contrary to the expectations of nebular and planetesimal theorists, so much so that Hal Levison called his own theory a fairy tale, and others crazy (see 05/30/2002 headline). His subsequent suggestion was the only wise thing he said: We have to start thinking of alternatives. Probably theres a method for their formation that no one has even thought of yet. Well, some have, but their views are categorically disallowed by the reigning naturalistic paradigm.Cambrian Explosion Explained, or Explained Away? 07/29/2004 James Valentine, an authority on early fossils, has just published a new 600-page book on the Cambrian explosion with the Darwinesque title, On the Origin of Phyla (U. of Chicago Press, 2004). Stefan Bengtson (Swedish Museum of Natural History) reviewed it in the July 29 issue of Nature.1 He points out that Darwin wisely called his best-known work On The Origin of Species; the origin of phyla is an even stickier problem, and Valentine deserves credit for tackling it at such breadth (emphasis added in all quotes). He is not sure, however, that Valentine succeeded in explaining one of the most significant revolutions in the history of life, the Cambrian explosion. One complaint is that in all those pages Valentine said little about the ecology or physical environment in which the explosion of body plans took place. Also, Bengtson is not convinced that the usual explanation is meaningful that a phylum is simply a clade (category) of all animals that diverged from a common ancestor when two body plans diverged in the remote past; This avoids the question of how body plans arise and whether there may be others not represented by living forms, he chides. Worse, Valentine fell into a logical trap, he feels: Defining a body plan isnt easy, however. Valentines definition, for example, is dangerously circular: an assemblage of morphological features shared among members of a phylum-level group. What does that mean, except that when we define a phylum we also define its body plan, or vice versa? Valentine proposes to define the origin of a phylum by the acquisition of a key apomorphy a unique derived trait. This may be more subjective and less convenient than letting the total (stem and crown) group or the crown group define the phylum, but it gives due priority to biological significance over methodological convenience. After all, we want to know how different kinds of organism evolve [sic] by natural selection, and how they interact with each other and with the environment. They do that with their phenotypes, not their pedigrees.Bengtson also considers the suggestion that body plans represented more or less the total number of possible solutions to the problem of being an animal, or whether there were numerous other possibilities that came into being but became extinct because of bad luck or bad design [sic]. (The evidence shows a decrease in body plans after the explosion due to extinction, not a gradual rise in diversity.) But is this just explaining away the evidence? The pattern of diminishing evolutionary novelty [sic] subsequent to this event, he says, may have been due less to developmental constraints than to a saturation effect (candidates for new adaptive radiations were already available among existing body plans). He also believes that the Cambrian explosion produced a lot more homoplasies (similar characters with independent origins) than most phylogenetic analyses suggest in my view an extremely important point that calls for much more careful character evaluation than is commonly done. He is clearly not impressed, then, by some recent attempts to use fossils to bridge gaps between phyla.If the reader is left wondering how the body plans arose in the first place, the final paragraph of this book review may not be all that satisfying. How could environmental changes generate the information necessary to produce fins, eyes, jointed limbs, propulsion mechanisms, and so much more that is evidenced in the Cambrian fossils? Valentine seems most happy with intrinsic biological mechanisms for the rapid appearance of phyla. Large parts of the book deal with developmental prerequisites (such as cell-type numbers and gene regulation) for the event. Ecological interactions, such as predation, are given more cursory treatment. As for the physical environment, he merely concludes, somewhat apologetically, that although physical environmental factors were supremely important, he does not see any evidence that extraordinary environmental events were causally connected with the Cambrian explosion. Given that extraordinary environmental events did indeed occur [sic] shortly before the explosion, I would give the jury just a little more time to ponder the question. But first I would make sure they had read this magnificent book.So how did the body plans arise in a geological blink of an eye? This question was apparently not on the agenda. Next day in Science,2 R. Andrew Cameron also reviewed Valentines book. This review praised and criticized different things. Cameron first dismisses the analogy explosion, primarily because he claims that molecular studies put the origin of the phyla farther back into the precambrian; consequently, he claims, it was neither an explosion nor did it happen in the Cambrian, although he does agree that the Chengjian fossils display representatives of almost all major groups of animals (see 07/20/2004 headline). He mentions the possibility that ancestors were soft-bodied and small, resulting in a poor fossil record; Perhaps the conditions of the Cambrian environment allowed the rapid appearance of hard skeletal parts, greatly favored fossilization, or both. But then he mentions the discovery of fossil pre-Cambrian embryos from the Doushantuo Formation of southwest China, estimated to be 40 to 55 million years older than the base of the Cambrian, so being soft and small did not hinder these specimens from becoming fossilized. Cameron understands the problem of the Cambrian explosion, and claims it is more of a problem now than in Darwins day: The question of when and how higher taxonomic groups like phyla evolved [sic] differs markedly from the one Darwin addressed 145 years ago in The Origin of Species. It is not simply different in scale but also in quality. Although it is somewhat easier to see how changes in single genes can lead to differences among species that render some more capable of surviving in particular environments, it is more difficult to account for the many changes that lead to entirely different bodyplans as a simple accumulation of single-gene effects. For example, marine stickleback fishes possess bony plates and spines that presumably prevent predation, while their freshwater relatives show a loss of this armor through changes that can be attributed to a single gene [see 06/18/2004 headline]. However, entire organ systems or embryonic germ layers, features that distinguish higher taxa, can be explained in terms of the gene regulatory networks whose architecture is hardwired into the genome.So the question for the origin of phyla is how did these hardwired gene regulatory networks arise? Cameron claims that Valentine does not incorporate a molecular model in his final synthesis, so he offers one himself: major changes might arise through changes in regulatory genes like transcription factors. Can he give us an example? For instance, a morphogenetic program may evolve with relatively minimal changes to establish a new spatial domain of expression for a cell-differentiation program, and the resultant animal has a new body part. He does not elaborate. Cameron praises the first two sections of the book that discuss the origins of the phyla, descriptions of the phyla, and the fossil record. The third section grapples with the evolution of the phyla. This section is lacking, the reviewer thinks: The pictures he delineates here reveal correlations uniting different levels of biological organization, but absent are firm statements about causal mechanisms from which predictions could be made. Cameron leaves us with one more concern. In view of the volatility of the ideas and the controversy that still exist in this particular area of evolutionary biology, one might argue that it is too early to explain the causes of the origin of phyla. But as Valentine aptly points out, the time will never be exactly right: there are always more information to incorporate and more ideas to organize. Incidentally, Nature also reported discovery of an arthropod fossil that pushes its group, the Euthycarcinoids, back 50 million years into the Cambrian. Despite its antiquity and marine occurrence, they admit with surprise, the Cambrian species demonstrates that morphological details were conserved in the transition to fresh water. 1Stefan Bengtson, The body-plan explosion, Nature 430, 506 (29 July 2004); doi:10.1038/430506a. 2R. Andrew Cameron, Evolution: Hunting for Origins, Science, Vol 305, Issue 5684, 613-614, 30 July 2004, [DOI: 10.1126/science.1100684]. 3Vaccari et al., Cambrian origins and affinities of an enigmatic fossil group of arthropods, Nature 430, 554 - 557 (29 July 2004); doi:10.1038/nature02705. Satisfied? Apparently in 600 pages, Valentine did not answer the most basic and fundamental question, how did all this biological complexity emerge in a short time? Pounding the earth with meteors and tidal waves and volcanoes wont do it. Invoking a new predator wont create an elaborate escape mechanism in the prey; it might just mean the predator will eat everything and then starve. Camerons folklore is simplistic: a regulatory gene mutates and presto! A new body part! Can duplicating some protuberance generate an eye? Come on.Spaghetti in a Basketball: How the Cell Packs DNA for Controlled Access 07/28/2004 The beginning sentence of an article in Current Biology1 cant help but grab your attention: Imagine trying to stuff about 10,000 miles of spaghetti inside a basketball. Then, if that was not difficult enough, attempt to find a unique one inch segment of pasta from the middle of this mess, or try to duplicate, untangle and separate individual strings to opposite ends. This simple analogy illustrates some of the daunting tasks associated with the transcription, repair and replication of the nearly 2 meters of DNA that is packaged into the confines of a tiny eukaryotic nucleus. The solution to each of these problems lies in the assembly of the eukaryotic genome into chromatin, a structural polymer that not only solves the basic packaging problem, but also provides a dynamic platform that controls all DNA-mediated processes within the nucleus. (Emphasis added in all quotes.)The article by Craig L. Peterson and Marc-André Laniel is otherwise boringly titled Histones and histone modifications, but after this appetizing start, goes into detail about how the tangled mess of alphabetized pasta is exquisitely controlled, folded, unfolded and copied continuously inside the cell, with the help of numerous protein and RNA parts. Of special importance are the histone proteins that comprise chromatin. Scientists have been discovering for several years now that these histones have tails of amino acids that can be altered through numerous ways. These alterations, called post-translational modifications, seem to influence the DNA wrapped around them in many important ways. They signal genes to activate for transcription, places needing DNA repair, places to start or repress DNA elongation or replication, where to silence telomeres, places to deposit more chromatin, and more. A table in the article lists 95 histone modifications and their functions that are known so far. Some are involved in mitosis (cell division), spermatogenesis, X-chromosome inactivation (silencing one of the two X-chromosomes in the female), apoptosis (programmed cell death), DNA memory and other important cell processes. Some have said these modifications constitute a histone code (see Cell memory borders on the miraculous, 11/04/2002 headline). These authors term it differently, but no less amazing: rather than a histone code there are instead clear patterns of histone marks that can be differentially interpreted by cellular factors, depending on the gene being studied and the cellular context. Activities like DNA repair or replication are often accompanied by histone modifications, for instance, as if one enzyme leaves its mark on a histone to signal a follow-up function. Complexes of small RNAs and enzymes depend on these markers to know where to go and what to do; the histone tails serve as attachment points for specific enzymes. And if that is were not amazing enough, the interplay of neighboring histone markers, or cross-talk, can have a profound effect on enzyme activity. The authors explain, Thus, in many ways histone tails can be viewed as complex protein-protein interaction surfaces that are regulated by numerous post-translational modifications. Furthermore, it is clear that the overall constellation of proteins bound to each tail plays a primary role in dictating the biological functions of that chromatin domain. Finally, since some of these histone states can survive cell division, they augment whats inherited beyond DNA alone. The authors provide no suggestions on how this system might have evolved. On a related subject, three geneticists from Scotland describe, in the same issue of Current Biology,2 how DNA packs itself so tightly and efficiently. There are specialized proteins called condensins that perform this job. They are members of a set of hairpin-shaped enzymes called structural maintenance of chromosomes enzymes (SMCs, see 08/07/2002 headline). The authors remind us that These extraordinary molecules are conserved [i.e., unevolved] from bacteria to humans. Scientists are beginning to be able to watch condensin do its amazing work in real time (see DNA folds with molecular velcro, 06/07/2004 headline). Condensin produces supercoils of DNA, one of many steps in packing the delicate DNA strands into a hierarchy of coils that results in a densely-packed chromosome. It is not entirely clear how the DNA is held in this supercoiled state, they say, but several studies suggest that the V-shaped arms of the condensin complex may loop and clamp the DNA in place. This clamping is rapid and reversible. Scientists watching the process in both bacteria and humans are showing that both vertebrate and bacterial condensins drive DNA compaction in an ATP-dependent fashion with a surprising level of co-operativity that was not fully appreciated. The condensin molecules work as a team; if not enough condensin is around, nothing happens. These authors point out also that condensin is just one of many enzymes involved in chromosome formation. Think about how remarkable it is that during each cell division, the chromosomes are structured so reliably that they can be labeled and numbered under the microscope. Our own proteomic analysis, they claim, has identified over 350 chromosome-associated proteins, so there is clearly more work to be done. There is no mention of evolution in this article, either. 1Peterson and Laniel, Histones and Histone Modifications, Current Biology, Volume 14, Issue 14, 27 July 2004, Pages R546-R551, doi:10.1016/j.cub.2004.07.007. 2Porter, Khoudoli and Swedlow, Chromosome Condensation: DNA Compaction in Real Time, Current Biology, Volume 14, Issue 14, 27 July 2004, Pages R554-R556, doi:10.1016/j.cub.2004.07.009. The views we are getting of a cell since the invention of the microscope can be likened to those from a UFO descending from earth orbit to ground level. From orbit, a city like Boston seems to have a lot of structure and organization. As we descend into this alien world, more and more organization becomes apparent, till from airline height, we see complex transportation arteries and machinery apparently all coordinated and purposeful. From helicopter height, individual workers begin to come into focus. We are now approaching ground level, and able to watch factory workers and figure out what it is they are doing. Just imagine what Leeuwenhoek would think, considering he only got the orbital view.In the Last Days There Shall Be Scoffers 07/28/2004 Current Biology this week contains two entries either attacking creationism or exalting Charles Darwin.1,2 Nigel Williams reports on the 100th birthday of Ernst Mayr (see 07/02/2004 headline), and his tireless campaign against creationism: Ernst Mayr, the renowned evolutionary biologist and champion of Darwin, celebrated [sic] his 100th birthday earlier this month by leading a scathing attack on creationism. The evolutionary biologist, acclaimed as one of the most prolific researchers, has no intention of retiring and is shortly to publish new research that dismantles the fashionable creationist doctrine of intelligent design. (Emphasis added in all quotes.)Apparently Mayrs approach is nothing new to anyone in the I.D. community who has read On the Origin of Species; Williams says that intelligent design the latest way in which creationists [sic] have sought to present a divine origin of the world was thoroughly rebutted [sic] by Charles Darwin a century and a half ago. Whats motivating Mayrs campaign? a sense of exasperation at the re-emergence of creationism [sic] in the US, Williams says. Evolution was no problem in Mayrs childhood schools in Germany, so why are so many school boards trying to water it down or omit it in America? Williams recounts the case in Georgia when the superintendent of schools tried to have the controversial buzzword evolution banned [sic] from the curriculum. Fierce protest, including criticism from Jimmy Carter, the former president, reversed this, Williams states with apparent satisfaction. In its ongoing series of interviews with practicing scientists, Current Biology interviewed mathematics professor (U. of Vienna) Karl Sigmund (also a popularizer of evolutionary game theory: see 02/10/2004 headline). Here is his answer to the question, What turned you on to biology in the first place? I hit upon a German version of Darwins Descent of Man at the tender age of twelve. I cannot possibly have understood much of it, but was immediately fascinated, first by a photo of old Darwin, whose piercing eyes haunted me, and then by the idea of having apes among my forebears: it explained [sic] why I felt so happy in the tree-tops. Besides, I liked the fact that not a few of my elder family members catholics [sic] all were distressed to see the book in my hands. Much later, I noticed that a thoughtful editor had removed the parts on sexual selection. What would my relatives have said to that!After Sigmund was turned off by biology in school and became fascinated with mathematics, there was another turning point: I forgot all about biology and became a professor of mathematics before I came across The Selfish Gene. That was a turning point for me. [Richard] Dawkins very first sentence thrilled me: This book should be read almost [sic] as though it were science fiction. There were not just facts in biology; there was a place for the what if a basic question for any mathematician.Sigmund is asked about remaining challenges to evolutionary game theory, and admits it needs to be tied in with the biology and neurology of the brain, how modules in the brain interact, and cooperate, in guiding an individuals feelings and wishes. He points to tentative experiments that look for relationships between brain imaging and human reactions to perceived fair and unfair situations. Such a form of neuro-economics [sic] or, better, physio-economics [sic], because hormone levels play a great role too may eventually tell us more about human nature than anything since Darwin studied expressions of emotions in man and animals. And if I feel foolish when I re-read this sentence ten years from now, I will tell myself that it was pretty good science fiction. 1Nigel Williams, One long argument, Current Biology, Volume 14, Issue 14, 27 July 2004, Page R540, doi:10.1016/j.cub.2004.07.002. 2Q&A: Karl Sigmund, Current Biology, Volume 14, Issue 14, 27 July 2004, Page R541, doi:10.1016/j.cub.2004.07.003. One way for Karl Sigmund to feel foolish real fast is to read Creation-Evolution Headlines regularly and other publications outside the Darwin Party propaganda machine (heres a list for starters). An easier way is to flip a few pages in the same issue of Current Biology to the articles on histones and condensins (see headline above). Thats if Sigmund is even interested in truth over science fiction. He said it himself: he was drawn to evolution not by a studied analysis of the facts, but by (1) the haunting eyes of Charlie, the materialists buddha, (2) a fallacious, childish non-sequitur that apes in the family tree made him feel at home climbing trees, and (3) childish rebellion. Parents, beware. If your kid cant think straight or exercise self-control by the age of 12, it may be too late. The kid will be a sucker for the Darwin Party storytelling circus.Solar System Update 07/27/2004 Whats happening at Mars and Saturn? In this golden age of planetary science, the extraordinary has become commonplace. Lets check in and see what the spacecraft have found lately. Mars. The Mars Exploration Rovers Spirit and Opportunity are still going strong, well past their nominal mission. Despite a few minor problems (and decreasing sunlight as winter sets in), they both are in exciting locations that are giving the scientists new thrills. The latest major announcement (see New Scientist) is that water not only appears to have existed in the past, but persisted for some time. Spirit is now climbing the Columbia Hills in Gusev Crater, while Opportunity a hemisphere away is tantalizing scientists with geological layers in the crater named Endurance. The MER website now posts interesting slide shows of each weeks activities so that earthlings can follow the adventures. Fascination with rovers should not make us forget the three Mars orbiters that continue to send back more fascinating imagery than a human mind can process. The venerable Mars Global Surveyor posts its latest images here, and the stalwart 2001 Mars Odyssey, well past its 10,000th orbit, posts its latest infrared images here. Not to be outdone, the European Mars Express continues to churn out high-resolution, color stereo images from orbit, including this latest shot of a fractured crater near Vallis Marineris. Saturn. Since its arrival at Saturn July 1, Cassini is healthy on its first long, elliptical orbit. Though the next close encounter isnt till October 26, when it flies past Titan at only 750 miles, the spacecraft is not idle. New images of the moons Mimas, Enceladus, Iapetus, Tethys, Dione and Rhea have trickled in, though not as yet better than Voyagers 1981 images because of the distance. Much, much better ones are in the mission plan. The nicest color image recently was this color composite of the rings. At full resolution it would make nice wallpaper. The Huygens Probe operations team had a successful risk review and probe checkout in preparation for their nail-biting January 14 parachuted descent to the surface of Titan. Meanwhile, the instrument teams (magnetometer, plasma wave, cosmic dust, ultraviolet and infrared, radio science and, of course, visible light imaging) are all busily taking data about Saturns winds and magnetic field, rings, moons and space environment. Some of it is surprising and should be announced soon. Note: NASA headquarters maintains its own Cassini website. Mercury. A new mission to Mercury named MESSENGER the first since Mariner 10 in 1975 is due to launch next month, August 2. The mission designed by Johns Hopkins Applied Physics Laboratory will take a long time to get results, though; the complex gravity-assist trajectory requires seven years before orbit insertion in 2011. Only about half of the planet was seen by Mariner 10 so there is a great deal more to learn about the innermost planet. Earth. Other planets are interesting, but we have to (better, get to) live on this one. The AURA mission just launched successfully on July 15 to study the upper atmosphere, especially the dynamics of the ozone layer that protects us from dangerous ultraviolet radiation. Interpreting this wealth of data from these exotic places will take years, but the new observations are certain to help answer old questions while stimulating new ones. Meanwhile, we need to keep the Darwin Party in line. Help your local Darwinist break his or her bad habit of equating water with life, a non-sequitur if there ever was one (e.g., from New Scientist, The actual time span has not been estimated, but it reveals enough time to strengthen the possibilities that life could have evolved on Mars.) A worse habit is thinking the discovery of life in space means the death of God. Apparently, they do not understand just how big God is; some creationists think life might be found on Mars or beyond. And who knows? Maybe the first incoming SETI message will be John 3:16 in Vulcan. For now, dont let the Darwinese hype bother you. Raw data belongs to everyone. Just because a fat spectator is belching hot air and making himself a nuisance doesnt mean you cant enjoy the game.Modern Cosmology Goes Schizophrenic 07/27/2004 According to Charles Seife writing in Science,1 more cosmologists are taking parallel universes seriously. This is a consequence of the Many Worlds interpretation of quantum mechanics, one possible mathematical solution to the effects of quantum weirdness. If you think our headline is too harsh, read Seifes opening in a Rod Serling voice while playing the Twilight Zone theme in the background: As is your habit, you are reading Science at breakfast (todays treat: an omelet made with dodo eggs). But as soon as you finish this paragraph, a carnivorous wombat crashes through the door into your apartment and chomps angrily on your prehensile tail. Right ... now.No further questions, your honor. 1Charles Seife, Physics Enters the Twilight Zone, Science, Vol 305, Issue 5683, 464-466, 23 July 2004, [DOI: 10.1126/science.305.5683.464]. Seifes paragraph subtitles are twists on explicit religious phrases: Reasons to believe, Youll never walk alone, Worlds without end. (Question: why do you think he used the name of Hugh Rosss organization here?) Seife gives air to critics of the Many Worlds hypothesis, but he does not attack the idea as stupid. Instead, he gives pretty good press to its advocates. Undoubtedly if Richard Dawkins were reading this issue sitting on his prehensile tail, he would nod approvingly, while calling creationism ignorant, stupid, insane or wicked.How Cells Build Hard Parts 07/26/2004 You have rocks in your head, and its a good thing, or you would die of starvation and imbalance. Living things have need of inorganic structures for various functions. Can you name the mineral structures in your body? The answer is: bone, dentin, enamel and otoliths. The last three are specific to your head. Dentin and enamel help us chew our food, and otoliths help us know which way is up (see 10/10/2003 headline). Vertebrates have bones and teeth, birds lay eggshells of calcium carbonate, and many marine and terrestrial animals build mineral shells. Scientists and engineers are drawn to the skill organisms exhibit in the construction of hard parts (called biomineralization), and they want to imitate it. Weve drawn attention to the amazing capabilities of the conch shell (see 06/26/2003 headline) and diatoms (see 07/21/2004 headline). Two recent articles in science journals discuss the human fascination with biomineralization. A book review in Science last week1 opens with praise for the lowly diatom: The abilities to design and construct inorganic materials with specified atomic structure, size, shape, orientation, and number of defects and to integrate these architectures into functioning devices form the foundation for advances in technologies that rely on the devices electrical, optical, magnetic, and chemical outputs. However, assembly methods that allow simultaneous control of these features at lengths from the nanometer scale to the macroscale continue to elude scientists and engineers....The book Mark E. Davis is reviewing is Biomineralization by the Mineralogical Society of America and Geochemical Society, 2003. He was especially impressed by the complexity of the molecular mechanisms organisms use to build their hard parts, mechanisms that show mastery of molecular biology, protein chemistry, nucleation thermodynamics, and crystal growth. Some organisms build minerals inside cells, outside cells, or between cells. Davis found one example particularly attractive to the materials scientist: Nacre, the mother-of-pearl layer found on the inner surface of shells, has a fracture toughness approximately 3000 times that of the synthetic analogue aragonite (calcium carbonate). Nacre is composed of thin (circa 30 nm) layers of a protein-polysaccharide intercalated between 0.5 micrometer-thick layers of aragonite tablets. The weak interface between the organic and inorganic layers is thought to dissipate the energy of crack propagation and thus strengthen the composite structure. This sophisticated architecture provides clues as to how man-made structures could be improved.How could such capabilities evolve? The evolution of mineralized tissues has been enigmatic for more than a century, says a team of three Penn State scientists writing in PNAS2 on the subject. Feeling that comparative genetics could help solve the enigma, they undertook a search for homologous genes and proteins between disparate groups. Mineralized tissue is a critical innovation in vertebrate evolution, they begin, offering the basis for various adaptive phenotypes: body armor for protection, teeth for predation, and endoskeleton for locomotion. Certain primitive fish have dentin-like body armor covered with an enameloid substance that the team believes evolved into fish scales. Their previous work suggested that mammalian teeth and agnathan body armor are homologous. This time, they examined the genome of a teleost fish and failed to find any homologous proteins for mammalian tooth enamel. Though dentin in teeth seems homologous with body armor that formed on skin collagen of fish, their analyses suggest that mammalian enamel is distinct from fish enameloid. Instead, they believe Their similar nature as a hard structural overlay on exoskeleton and teeth is because of convergent evolution. 1Mark E. Davis, How Life Makes Hard Stuff, Science, Vol 305, Issue 5683, 480, 23 July 2004, [DOI: 10.1126/science.1099773]. 2Kawasaki, Suzuki and Weiss, Genetic basis for the evolution of vertebrate mineralized tissue, Proceedings of the National Academy of Sciences USA, 10.1073/pnas.0404279101, published online July 22, 2004. These two articles illustrate the disparity between hard science and soft, mushy, slippery Darwinian scientism. It goes like this: (1) The organism excels at an engineering feat. (2) It must have evolved, but we dont know how. To the extent the organism elicits admiration, the Darwinian explanation elicits disgust.Evolutionists Consider Non-Darwinian Mechanisms 07/23/2004 According to classical Darwinian evolutionary theory, variations in the germ lines produce phenotypic changes that, on rare occasions, prove beneficial to an individual, and cause an organism to outcompete its peers in the struggle for existence. The hypothesis of Natural selection claims that the individual with a slightly beneficial variation, being more fit, leaves more offspring. Darwinian changes are gradual, random and independent. No sudden leaps (saltations) are allowed, and changes do not conspire toward a goal (i.e., no orthogenesis or straight-line evolution). Natural selection acts on genes in the individual (individual selection). Speciation occurs when a population becomes geographically isolated from another population (allopatric speciation) and the accumulated changes no longer permit interbreeding. Darwinians believe this gradualistic process is sufficient to account for all the innovations in all living things since the first cell emerged on Earth: all the organs, functions and behaviors of birds, insects, fish, plants and man. Darwin did propose an additional mechanism, sexual selection, in The Descent of Man. Ever since On the Origin of Species by Natural Selection was printed, however, competitors have proposed other mechanisms for evolution: group selection, kin selection, sympatric speciation, various Lamarckian mechanisms (inheritance of acquired characteristics), niche construction, Gaia, and more. The debates still go on today. Two recent papers offer new non-Darwinian mechanisms that might supplement the process of natural selection. According to EurekAlert, scientists at the Universitat Autonoma de Barcelona have discovered a New genetic mechanism for evolution. In their view, transposable elements (transposons) in the genes can generate antisense messenger RNA (mRNA) in neighboring genes that can silence or otherwise alter the expression of the genes. For a long time they [i.e., transposons] have been considered as a useless part of genetic material, DNA left overs, the press release states. However, it is more and more clear that transposons can cause favourable changes for the adaptation and survival of the organism. The press release does not provide any evidence of an innovative change due to this mechanism, but they point to an observation in fruit flies that some with an antisense mRNA caused by a transposon grew larger and lived longer, presumably due to the switching off of a gene. The way its taught in school, Darwin rendered Lamarckism obsolete (even though Darwin himself shifted toward a more Lamarckian view later in life.) But surprisingly, in Science this week,1 four biologists make the case for a Lamarckian mechanism of evolution. Although physically acquired characteristics may not be heritable, culturally acquired characteristics can be. You may not inherit your grandfathers wooden leg, for instance, but you might pass on his stories to your children. The authors claim that many animals can learn by watching, and pass on what they learn: a bird might learn a new mate attraction technique by watching another bird, or a mouse might learn that crossing the road is dangerous by watching a friend get run over. Such cultural lessons are public information (PI) that is heritable, they claim, and so cultural evolution (that acts on memes; i.e., ideas, behaviors or styles that spread socially) might influence biological evolution (that acts on genes). At least, they think, the suggestion deserves more thought: PI is a widespread phenomenon that is emerging as a potential unifying concept in fields that involve decision-making processes in which individuals can extract information from others to assess resource quality. The use of PI can enrich evolutionary models and can have marked effects on evolutionary predictions. Future research should explore the extent to which evolutionary scenarios are affected by the use of PI. (Emphasis added in all quotes.)They continue, the ability of individuals to use PI unites a range of topics as diverse as foraging, predation, mate choice, habitat selection, and colony formation. PI may be, in fact, the major driving force in social evolution, and may imply that cultural evolution is more widespread than previously thought. Moreover, they propose in conclusion, although much work has been devoted to exploring how biological evolution affects culture, we suggest that evolutionary biologists should also consider how cultural evolution influences biological evolution. 1Étienne Danchin, Luc-Alain Giraldeau, Thomas J. Valone, and Richard H. Wagner, Public Information: From Nosy Neighbors to Cultural Evolution, Science, Vol 305, Issue 5683, 487-491, 23 July 2004, [DOI: 10.1126/science.1098254]. Even though it is amusing to watch the Darwin Party argue over which mechanism they like best, it is all beside the point. As Phillip Johnson pointed out over a decade ago in Darwin on Trial, none of these mechanisms establish the very thing that Darwin set out to explain in the first place: that unguided natural processes unaided by any intelligent design had creative power to generate eyes, ears, wings, intelligence or any other complex feature; nor did Darwin or his followers find any historical evidence that a long chain of intermediates actually ever existed.Zoo Monkey Walks Upright 07/22/2004 For what its worth, theres a story going around about a macaque in an Israeli zoo started walking on its hind legs after a near-death experience (see MSNBC News and picture). One news source is calling it a missing link, another claiming the strange behavior is due to brain damage. This calls for a monkey riddle.Think Before You Speak 07/25/2004 Children are capable of thoughts before they have the words to vocalize them, according to a study published in Nature July 221 (see also summary by Paul Bloom in the same issue2 and report on Science Now). This contradicts the postmodernist view that thought is conditioned by language, and instead suggests that humans are innately capable of conceptualizing things, and that words are merely the tools for expressing thought. Psychologists experimented with 5-month old infants and concluded that Language learning therefore seems to develop by linking linguistic forms to universal, pre-existing representations of sound and meaning. Babies have a plasticity to concepts regardless of language, but as they grow up, children place less importance on concepts that arent emphasized in their language. Bloom thinks this reinforces the old view of St. Augustine on learning to speak: By constantly hearing words, as they occurred in various sentences, I collected gradually for what they stood, and having broken in my mouth to these signs, I thereby gave utterance to my will. 1Hespos and Spelke, Conceptual precursors to language, Nature 430, 453 - 456 (22 July 2004); doi:10.1038/nature02634. Ever have a thought in your mind but couldnt express it in words? Maybe thats the frustration a baby feels. She is thinking, Action-oriented orchestration of innovative inputs generated by the escalation of meaningful indigenous decision-making dialogue can maximize the vital thrust toward a non-alienated viable urban infrastructure contingent upon third-generation time-phase conceptualization, but all that comes out is goo goo gah. Mothers seem to understand all this on their internal Babynet wavelength, but dads should learn to pay better attention.Old Rivers Cut Fast, Fast, Fast Through Solid Rock 07/22/2004 A press release from University of Vermont says, Geologists Discover Water Cuts Through Rock at Surprising Speed. A five-year study concluded that the Susquehanna and Potomac rivers cut through 10 to 20 meters of solid rock in 35,000 years, a rate far more rapid than previously thought, especially since most of the cutting occurred during a short-lived pulse of unusually rapid down-cutting in their estimation. They claim that regional climate change was a bigger factor than glacial meltwater. Their work is published in the July 23 issue of Science.1 The synopsis says, One of the most basic geological process is the incision of bedrock by rivers, yet little is known about the rates or timing of this process along passive continental margins like the eastern seaboard of the United States. (Emphasis added.) 1Reusser et al., Rapid Late Pleistocene Incision of Atlantic Passive-Margin River Gorges, Science, Vol 305, Issue 5683, 499-502, 23 July 2004, [DOI: 10.1126/science.1097780]. The authors dont mention previous estimates for the age of these gorges. MSNBC News claims it is twice the previous estimate, but with more water the erosion could have been even more rapid. Science News, on the other hand, says These erosion rates are tens to hundreds of times faster than scientists had suspected.Plant Evolutionary Leftover Now Deemed Vital 07/22/2004 Photorespiration, a biological process in plants, thought to be useless and even wasteful and just an evolutionary leftover from an age when carbon dioxide was more prevalent, has been found to be necessary for healthy plant growth and if impaired could inhibit plant growth, according to a UC Davis study published in PNAS.1 (see also summary on EurekAlert). It functions as a way to inhibit nitrate assimilation. Some agricultural scientists assumed it was an unnecessary process to be genetically engineered out of plants because it was wasteful, But the new UC Davis study suggests that there is more to photorespiration than meets the eye and any attempts to minimize its activity in crop plants would be ill advised. Evolutionary presuppositions have once again stood in the way of scientific progress. A design model would have looked at the phenomenon as there for a reason, and sought to determine what it was. These scientists had to ignore Darwinism to get at the truth. And were supposed to believe that nothing in biology makes sense except in the light of evolution? The new version should be, nothing in Darwinism makes sense in the light of biology.New Book Reveals Chinas Cambrian Explosion 07/22/2004 Nature July 221 has a book review about the first volume in English of the Chengjiang biota of China, where tens of thousands of soft-bodied organisms are preserved in early Cambrian strata. The book, The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life by Xian-Guang Hou et al., is praised by reviewer Zhe-Xi Luo, who puts a positive spin on the problem of the Cambrian explosion: These beautiful and unique fossils have inspired new scientific insights and led to the clashing of ideas. There is a great debate on the likely positions of Chengjiang animals such as the yunnanozoans in the deuterostome family tree [sic]. Such debates will surely redefine the phylogenetic framework for establishing the earliest evolution [sic]of key features of chordates....In the film Icons of Evolution, paleontologists onsite at the Chengjiang beds demonstrate that while soft-bodied fossils appear in the early Cambrian beds, including items as delicate as sponge embryos, no fossils appear in the preCambrian beds just below them, even though conditions were suitable for preservation. The paleontologists also explain that all the phyla appear abruptly in the Cambrian beds. Biodiversity actually decreases in the higher layers, contrary to the predictions of Darwins tree of life diagram. In the same issue, Andrew B. Smith2 comments on a fossil found in the same Chengjiang beds by D. -G. Shu and Simon Conway Morris et al.3 that they claim is a primitive echinoderm. The phylogeny of echinoderms, which includes starfish and sea urchins, has long been a puzzle. If correct about this fossil claimed to be 520 million years old, he asserts, this links the echinoderms to an enigmatic group, the vetulicolians, remains of which are found in the same deposits of early Cambrian age. Making the connection with this enigmatic group poses a major difficulty, he says, because of the difficulty of interpreting even their basic anatomical organization. Although echinoderms are placed within the deuterostomes (a very diverse group of animals with a mouth and anus which includes all the vertebrates), in terms of morphology echinoderms have always stood apart because of their aberrant symmetry and lack of structures known as gill slits unique to deuterostomes. Starfish, with their five-fold symmetry radiating from a center, dont fit the pattern of other deuterostomes. Smith seems to remain unconvinced of the connection at this point: There is now direct fossil evidence that all of the major deuterostome groups were established by about 520 million years ago [sic]. Fossil vertebrates (yunnanozoans), tunicates (Shankouclava) and both asymmetric and radiate echinoderms (homalozoans, helicoplacoids) have all now been discovered in early Cambrian deposits. Phlogites, a tentacle-bearing early Cambrian fossil of uncertain affinity, might even be a hemichordate or part of the common ancestral lineage of echinoderms and hemichordates. So, if deuterostome divergence occurred around 575 million years ago, as recent molecular-clock studies suggest, there is a 50-million-year gap in the fossil record between the origin of deuterostomes and their appearance in the fossil record. In the jigsaw of deuterostome evolution [sic], vetulocystids represent another piece to be fitted into a puzzle where many of the pieces are still missing. 1Zhe-Xi Luo, A window on early animal evolution, Nature 430, 405 (22 July 2004); doi:10.1038/430405a. 2Andrew B. Smith, Paleontology: Echinoderm roots, Nature 430, 411 - 412 (22 July 2004); doi:10.1038/430411a. 3Shu, D. -G., Conway Morris, S., Han, J., Zhang, Z. -F. & Liu, J. -N. Nature 430, 422–428 (2004). The spinmeisters of the Darwin Party, like this book reviewer, sound for all the world like a Stalinist explaining the benefits of the new Five-Year Plan. Smith seems to be saying not so fast as he owns up to the mystery of the Cambrian explosion: all the major groups of animals, including vertebrates, appear suddenly in the early Cambrian without ancestors. Think of all the changes that must take place to turn an organism with bilateral symmetry into one with pentaradiate symmetry like a starfish. The first uncontested fossil echinoderm is already a full-fledged echinoderm. Why is this so puzzling? Its only a puzzle if youre trying to draw a mythical tree between the dots that is only a figment of philosophical imagination.SETI Researcher Predicts Success Within 20 Years 07/21/2004 According to New Scientist story reported on EurekAlert, Seth Shostak of the SETI Institute predicts we will know within 20 years if there is intelligent life out there in the Milky Way. He plugged his numbers into the Drake Equation and estimated between 10,000 and a million radio transmitters spreading messages across the galaxy. He bases his two-decade prediction on that number and the rapid improvement of computer search technology. A member of the SETI League criticizes the estimate because the other end of the communications link is completely out of our hands. It would be nice to think we know something about the existence, distribution, technology and motivation of our potential communications partners in space, but in fact, we dont. Shostak defended his prediction in spite of the myriad uncertainties surrounding it, because I have made this prediction using the assumptions adopted by the SETI research community itself. No inbreeding of thought there, huh? How about using the assumptions of the ID community? Speculation is fun but impractical. He knows few will check back in 2024 to see if he was right, so it serves to get notoriety in the news and maybe additional public support (or funding).Engineers Envy Diatoms Glass-Sculpturing Prowess 07/21/2004 What is it? An ornate crown? A crystal serving dish cover? A work of art? The photo on the cover of the July 17 Science News, labeled silicon jewels, is a microphotograph of a diatom, a one-celled organism that lives in the sea and builds itself a glass house too small to see with the naked eye. There are thousands of species of diatoms, each with a unique shell design. The article has more diatom photos: one that looks something like a bent sombrero made out of a collander with two goblets sticking out, another that looks for all the world like an Indian tom-tom, complete with stitching, and another that looks like a sunflower head complete with Fibonacci spirals (see 11/20/2003 headline). Others look like sieves, gears, triangles, stars, and many other shapes both common and extraordinary. Scientists dreaming of nanotechnology cant get over the skill of diatoms in glass manufacturing (see 03/19/2002 headline). Diatoms are inspiring world-wide efforts to probe their secrets, so that engineers can mass-produce useful molecular devices like photonic crystals and lenses (see 01/29/2003 headline), gas sensors, miniature reaction tubes and other microscopic structures of high tensile strength (see 02/19/2003 headline). Though focused on scientists imitating nature, author Alexandra Goho shares some amazing facts in passing about diatoms (emphasis added in all quotes):
It will be impossible to reproduce this process in a test tube because its such a complicated cellular process, says [Mark] Hildebrand [of Scripps Institute].So how did these tiny one-celled organisms achieve manufacturing prowess that makes our best engineers stand in awe? Nature [sic] has been building things on the nanoscale for a long time, says materials scientist Ken Sandhage of the Georgia Institute of Technology in Atlanta. Alexandra Goho ends, Materials scientists are only beginning to uncover the secrets of this aquatic community of glass-sculpture artists produced over millions of years of evolution. 1Alexandra Goho, Diatom Menagerie, Science News, Week of July 17, 2004; Vol. 166, No. 3 , p. 42 Gag! Choke! This is like watching a spectacular stage show then being expected to bow to a fat Charlie image at the end. We were all set to applaud and praise this well-written glimpse into another wonder of nature, a wonder that shouts intelligent design, and then Goho has the gall to say evolution over millions of years produced glass-sculpture artists with 11,000 genes, hundreds of which work together in coordinated fashion to build unique, exquisite, precision structures out of glass without pollution or waste of energy. Unbelievable. Did any of the scientists present any evidence that evolution could do such a thing?* No; in line with the stinking habit of the Darwin Party, they merely assumed evolution did it, because they have committed their lives, their fortunes, and their sacrilegious honor to the philosophical belief that there is no God, no Creator, no intelligent Designer. Their faith forces them to believe the absurd, in spite of the evidence. This one example should be enough to make any clear-thinking scientist toss Charlies figurehead overboard, but thumb through a few more Amazing Chain Links below and ask yourself how many other wonders of nature we are asked to believe happened by mindless, chance processes. Phooey; a wonderful science story was ruined by the last sentence. So instead of praising this article unequivocally to the tune of This Is My Fathers World, it saddens us to have to sound the Bronx cheer as we hand out another Stupid Evolution Quote of the Week award.Plants Are World Travelers 07/20/2004 We think of plants as stationary life forms anchored to the soil, but National Geographic News reminds us that they have remarkable ways of getting around via seed dispersal mechanisms. Some fly through the air with parachutes or helicopters, some float in the water, and some rely on animals. It appears that some exotic species may be vanishing because animals they relied on for dispersal have gone extinct. A wonderful film that reveals the hidden world of seed dispersal is the award-winning Moody science classic Journey of Life. This is a must-see nature film. Follow delicate packages of life as they travel through the air, across oceans and continents, down rivers, through fires, ride on birds and monkeys and cows, roll through the West, explode across the field and even crawl across the soil and drill themselves in the ground. The time-lapse and slow-motion photography is stunning. This sermons from science film ends with an analogy to another seed spoken of by the Lord Jesus in one of his parables: the word of God. The film would make a great introduction or conclusion to a local nature hike.Dark Energy Is Embarrassing 07/20/2004 Robert Scherrer is trying to come up with a theory that combines dark matter and dark energy, reports Space.Com. It is somewhat embarrassing to have two different unknown sources for the dominant forms of matter and energy in the universe. On the other hand, that may just be the way things are. We dont get to pick the universe we live in. Yet if he is right, it makes other cosmologists uneasy. Writer Robert Roy Britt explains, There is one glaring problem with the idea, which Scherrer admits to. It implies that we live at a very special moment in time when the energy densities of dark matter and dark energy are roughly equal. Scientists hate coincidences. Cosmologists have been chewing on their two fudge factors, dark matter and dark energy, for years now. Too much fudge causes truth decay. The only wise crack in this article is that we dont get to pick the universe we live in. If it appears coincidental that our universe is special, deal with it.Dinos Found in Spain, Croatia 07/20/2004 Dinosaur fossils continue to be discovered around the world. The BBC news hints that surprises may be forthcoming from a new cache in Spain that has yielded stegosaurs, crocodilians and carnivorous dinosaurs, and a pelvic bone possibly from Diplodocus. On a resort island of Croatia, trackways of titanosaurs have been discovered, reports EurekAlert. The BBC is celebrating the bicentenary of the British scientist who gave us the word dinosaur, Sir Richard Owen; see Taipei Times story. Richard Owen was a strident opponent of Charles Darwin, and had more credibility than Darwin in 1859. Same could be said of Adam Sedgwick, the man who taught Darwin geology. Darwin was deeply hurt that these two eminent scientists rejected his theory, but his four musketeers (see 01/06/2004 headline) saw to it that their bearded buddha got elevated to the pantheon anyway (see 02/13/2004 commentary).You Have Motorized Sunscreens in Your Eyeballs 07/19/2004 The pain of walking suddenly into a bright light sets up an amazing reaction, according to EurekAlert. An alarm is sent to the fire station in the retinal cell. There, protein firefighters hop onto a motorized shuttle on the molecular railway, and once firmly attached, are ferried swiftly to the scene of danger. There, they shut off the energy flow which, if left untreated, could cause temporary blindness. Heres how the Johns Hopkins press release words it: Building on their previous work showing that specific proteins in eye cells are redistributed in response to bright light, the Johns Hopkins team now reports how a key protein called arrestin is shuttled from a holding area where it binds and calms a light-detecting protein. Writing in the July 7 issue of Neuron, the team says arrestin is moved around by a tiny molecular motor, called myosin, which travels along the train tracks of the cells internal skeleton. (Emphasis added in all quotes.)This chemical reaction is separate from the muscular constriction of the iris that also automatically responds to the brightness of incoming light. Wonder how many lucky accidents it took to put this system together. Biology is beautiful when you take the Darwin dark glasses off.Blame Evolution 07/19/2004 Men cant help themselves. Evolution made them that way. Thats the gist of a science story on ABC news. Accompanied with a picture of rebel without a cause James Dean, it begins, Research shows that simply being male means youre more likely to die as a young adult. Why? Blame evolution...and pursuit of the opposite sex. (Emphasis added.) Writer Amanda Onion cites evolutionary sources to say that evolution has programmed men to compete for access to females and that causes them to live on the edge and die y |