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Still, some critics claim that science by definition cant accept design, while others argue that science should keep looking for another explanation in case one is out there. But we cant settle questions about reality with definitions, nor does it seem useful to search relentlessly for a non-design explanation of Mount Rushmore. | ||||||||||||||||
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Stars: Born of Violence, or Doing Violence to Theories? 05/31/2005
Another surprise was announced by Australian astronomers working at the Keck Observatory: the stellar disk of Andromeda spiral galaxy M31 is apparently three times larger than earlier assumed. ABC News Australia has the story. One astronomer said of previous theories of galaxy accretion, This giant disk discovery will be very hard to reconcile with computer simulations of forming galaxies. 1Robert Irion, Turbulent Orion Nebula Shows a Flare for the Dramatic, Science, Vol 308, Issue 5726, 1249-1250, 27 May 2005, [DOI: 10.1126/science.308.5726.1249]. The pictures are beautiful. The stories are entertaining. No human lifetime could watch the whole sequence, so the interpretations are very much model-driven and riddled with difficulties. Certain ones claim this or that feature supports their pet theory (see Finagles Second Law). Others claim it turns the pet against its owner.SETI Researcher Joins NG Imagination Fest 05/31/2005 Space.Com writer Tariq Malik reviewed the National Geographic TV series Extraterrestrial that envisions flying whales, giraffe-like predators and flesh-eating tadpoles on a mythical world undergoing its own evolution. Using computer models and armed with basic evolutionary theory, the scientists imagined not only what conditions might exist on their theoretical planets, writes Malik, but also how life may interact with the environment to form a thriving ecosystem. (emphasis added). SETI researcher Seth Shostak told Space.com he joined the project because Here was a plan to make aliens that make sense. What the Darwinists lack in data, they make up for in imagination. That makes sense, all right financially. It explains why the Darwinists argue that teaching evolution is good for the economy (see 04/29/2005 entry). It provides jobs for animators and other imagineers. Malik wins the Stupid Evolution Quote of the Week: Eyes, for example, have evolved several times on Earth and are likely to pop up on other light-filled worlds, researchers said. Apparently, this crowd believes in Popeye as well as Tinkerbell (see 03/11/2005 commentary).Health Beliefs Re-examined 05/30/2005 Scientists continue to find new things that undermine commonly-held beliefs about health and the environment. For example,
1Bingenheimer et al., Firearm Violence Exposure and Serious Violent Behavior, Science, Vol 308, Issue 5726, 1323-1326, 27 May 2005, [DOI: 10.1126/science.1110096]. The point is not that any of these reports are the last word on those subjects, but if scientists cannot get things right about everyday issues regarding our daily habits, how can they presume to tell us about things millions of years ago?Darwinists Excuse Prejudice as a Hard-wired, Common-Sense Evolutionary Adaptation 05/27/2005 This weeks Stupid Evolution Quote of the Week comes from an Arizona State evo-psych press release echoed on News-Medical.net and EurekAlert: Contrary to what most people believe, the tendency to be prejudiced is a form of common sense, hard-wired into the human brain through evolution as an adaptive response to protect our prehistoric ancestors from danger. The authors of the study hasten to add that their hypothesis does not mean we cant change our prejudices:Can the Courts Define Science? 05/27/2005People sometimes assume that because we say prejudice has evolved roots we are saying that specific prejudices cant be changed. Thats simply not the case, [Steven] Neuberg [ASU professor of social psychology] says. What we think and feel and how we behave is typically the result of complex interactions between biological tendencies and learning experiences. Evolution may have prepared our minds to be prejudiced, but our environment influences the specific targets of those prejudices and how we act on them. (Emphasis added in all quotes.)Neuberg cant get off the hook so easily. If prejudice is an evolved adaptive strategy, then it has no moral implications whatsoever. Nobody can say that this or that target of our hardwired prejudice is wrong. Prejudice, if it evolved, is as good as eyesight or hearing. If anything is wrong to a consistent Darwinist, it is standing in the path of evolution. But ironically, their very claim shoots itself in the foot. If what they were saying was true, then we would have to dismiss their claims as evolutionary adaptive strategies for their own self-protection, and therefore inapplicable to our own interests. Last December, the ACLU and Americans United for Separation of Church and State filed a lawsuit in Pennsylvania against the Dover Area School District that was considering adding intelligent design material to the curriculum. The lawsuit attempts to define intelligent design as inherently religious and therefore unacceptable in science classrooms. The move appears aimed at censoring books from the Foundation for Thought and Ethics (FTE) which publishes student materials on intelligent design and critiques of evolution. If these tangible assets at the center of the controversy over the teaching of evolution are ruled inherently religious even though they teach no religious doctrines but only scientific criticisms of evolutionary theory and design detection methods then science students would only have pro-naturalistic textbooks available to them. The Alliance Defense Fund has filed a motion to intervene on behalf of FTE. ADF-allied attorney Jeff Mateer remarked, The ACLU and their allies are using the courts to further the preposterous notion that no other theories [than evolution] on the origins of life are scientific. To the liberal left, free speech is the highest ideal, and censorship is arguably the worst crime in the world. So who are the censors here? Who are the book-burners here? Who are the ones for indoctrination, against the open marketplace of ideas, and for stifling debate here? The very groups that want to defend homosexual advocacy and Islamic religion in public schools, believing that even grade schoolers and kindergartners should be exposed to it, exhibit rank hypocrisy when it comes to anything not on their leftist agenda.All You Wanted to Know About Spider Webs, Except Their Evolution 05/25/2005 Each issue of Current Biology contains a Primer on some interesting subject. The May 24 issue had one about spider webs.1 Fritz Vollrath shared some amazing details about this unique product of the lowly spider, but gave a strange explanation for how the capability to spin strong-as-steel nets evolved. First, the factoids:
Spider web structures and silks began their co-evolution about 400 million years ago, at first probably as a protein cover to protect the animals eggs and young. Webs then evolved different functions, including acting as a kind of wall-paper for the animals burrow and modifying the hole into a simple trap by radiating lines that inform the lurking spider about things beetling around outside. Even such simple lines expand the animals anatomical phenotype many fold by incorporating the body into an extensive silken net. The aerial webs of the modern spiders began to evolve perhaps 200 million years ago and are superb examples of extended anatomy. These webs also nicely illustrate the close interaction of material and behaviour which clearly are two separately encoded yet functionally inter-linked character traits.This seems to say that they evolved because they evolved. 1Fritz Vollrath, Spiders webs, Current Biology, Vol 15, R364-R365, 24 May 2005. This is a prime example of the leaps of faith rampant among Darwinians, who can discuss with apparent wonder the technologies of the animal kingdom capabilities that dwarf human efforts based on intelligent engineering then say they just evolved, with utter, implicit, and complete faith in the inspired Word of Charlie, who alone does wonders. Then they have the audacity to accuse non-Darwinians of relying on faith instead of science.Battlefield Dispatches 05/24/2005 Reports from the evolution wars continue to come in. Here are more recent stories about the conflicts over the teaching of evolution and intelligent design:
1Jeffrey Mervis, Bruce Alberts Interview: Attention, Class: A Departing NAS President Speaks His Mind, Science, Vol 308, Issue 5725, 1108, 20 May 2005, [DOI: 10.1126/science.308.5725.1108]. Alberts should be ashamed of himself for insinuating that anti-evolution efforts will make America look like a Middle Eastern country. He put three types of baloney in that sausage. First, intelligent design is not a biblical interpretation of scientific facts. ID does not rely on any theological position but rather on design detection using established scientific reasoning. Second, the only Middle Eastern country with a Biblical view is Israel, which has a strong pro-science record and a modernized civilization with political freedom for all. Why didnt Alberts point his attack where it belongs, at those unsavory, tyrannical countries with a Koranical interpretation of scientific facts? Third, evolution has absolutely nothing to do with making a country a scientific world leader. Darwin, whose only degree was in theology, was an imposter (see 05/02/2003 commentary) who snuck naturalistic philosophy into a scientific tradition that was built on belief in design (see online book). Of all people, Bruce Alberts, co-editor of The Molecular Biology of the Cell, and one who stated that the biology of the future is the study of molecular machines (see 01/27/2003 and 01/09/2002 entries), should realize that naturalism is hopelessly inadequate to explain the complexities of life.Stem Cell Headlines 05/23/2005 Research on embryonic stem cells is proceeding apace without an ethical anchor, and no clue where it will lead. News coverage of the debate accelerated with an announcement from South Korea.
1Quesenberry et al., Ignoratio Elenchi: Red Herrings in Stem Cell Research, Science, Vol 308, Issue 5725, 1121-1122, 20 May 2005, [DOI: 10.1126/science.1104432]. 2Gretchen Vogel, Korean Team Speeds Up Creation Of Cloned Human Stem Cells, Science, Vol 308, Issue 5725, 1096-1097, 20 May 2005, [DOI: 10.1126/science.308.5725.1096]. 3Magnus and Cho, Issues in Oocyte Donation for Stem Cell Research, Science, published online 19 May 2005, [DOI: 10.1126/science.1114454]. 4Erika Check, Korea's accelerating stem-cell work prompts calls for global ethical rules, Nature 435, 393 (26 May 2005) | doi: 10.1038/435393a. Our 02/08/2005 commentary still stands, and now we are in the thick of the ethical morass we knew was coming. Bioethical voices seem powerless over the lure of money and prestige. Erika Check quoted Caplan describing ethicists as standing on the sidelines and pouting, you cant do this. But would international controls help? The U.N. with its Oil-for-Food scandal showed that international agencies are no guarantors of ethics: they can become the problem, not the solution. Nor has the U.N. been willing or able to stop human rights violations in rogue nations like North Korea or Sudan. It is doubtful an international science community would have any power over rogue nations and individuals now that stem cell research is hot. We have seen that there are researchers within the civilized world with no qualms about trying anything that is possible, even putting human cells into rat brains (see 03/10/2005 entry). In todays amoral, selfish research culture, it seems as if the tables have turned: rat cells have invaded the human brain.Large Individual Differences Seen in Human Genome 05/20/2005 What makes each individual unique? Nature1 reported a surprising thing about the human genome that is becoming apparent as more individuals genes are examined. The first part is not surprising; the last part is: When the finished sequence of the human genome was unveiled last year, biologists said that it told a story of harmony for the human family. Every one of us, it turns out, shares 99% of our DNA with all the other people on Earth. But its our differences that really fascinate us. And at last weeks annual genome meeting in Cold Spring Harbor, New York, scientists revealed a wealth of data indicating a surprising conclusion about human diversity much of it might be explained by large structural differences between individual genomes, not by tiny differences in individual genes. (Emphasis added in all quotes.)Some of us have more copies of a gene than others do. Thats just the beginning, Erika Check reports from the meeting: we also have varying numbers of deletions, insertions and other major rearrangements in our genomes. Check claims that some of these differences are being acted on by natural selection. Europeans, for instance, have an inversion not seen in Africans or Asians that is correlated with having more children, a classic sign that the inversion confers an evolutionary advantage. Others at the meeting were also confident that structural differences are important in human evolution, and that among sections where there were differing numbers of copies of stretches of DNA, natural selection is actively working on these genes. Whats more, he [Duc-Quang Nguyen, U of Oxford] found that many of these genes belong to groups that seem to help us interact with our environment. For instance, many work in the immune system, and affect how we fight off disease. These are exactly the sort of genes that could explain our diversity why some of us get asthma when exposed to air pollution, or why some of us can eat plenty of cheeseburgers without gaining weight. 1Erika Check, Large genomic differences explain our little quirks, Nature 435, 252-253 (19 May 2005) | doi: 10.1038/435252b. DNA keeps surprising us. The old picture of a relatively static library occasionally mutating to provide grist for natural selection is out. Now, we see that even among our own species all of us being interfertile there are remarkable differences not in just a DNA letter here or there, but in whole stretches of DNA sometimes 100 base pairs long or more. What this all means is not clear. It may be that most of our genomes cannot tolerate much divergence (see 11/26/2004 entry), but a certain fraction can vary quickly to provide robustness against changing environments and diets as people groups migrate into new areas. If so, thank God for this variability. Consider the differences in habitat between the frozen tundra, rain forest, the Sahara, grasslands, Asian steppes, forests and coastlands. The food available, air pressure, climate, insolation and biota can vary considerably. But even that explanation is simplistic; Americans go on vacation to Iceland, China and the Serengeti, dont they? And international marriages usually produce offspring possessing fitness, whatever that is (see 10/29/2002 entry, Fitness for Dummies: Is it Running in Circles?).Neanderthals and Modern Humans May Have Interbred 05/19/2005 They lived together, they morphed into one another, so were members of Homo neanderthalensis really a separate species from Homo sapiens? Findings announced in Nature1 show a mixture of Neanderthal-like characteristics in modern human skeletons from Romania that led Science Now to state, Oldest Europeans were swingers. Because new radiocarbon dates of these skeletons put them in the transition period when modern humans were displacing Neanderthals, it is possible that modern humans have a Neandertal ancestry or that humans and Neandertals may have interbred. The carbon dating is critical to the story. In the Nature paper, the scientists pretreated several samples with acid and yet worried about contamination. Results varied from 26,330 years before the present (bp) to 31,500 years bp in six tests. One tooth yielded ages of 27,370 and 31,500 years, even though it was found in an excellent state of preservation in general and was therefore selected for dating as well. They assumed the younger date was due to contamination. The team admitted that all the ages determined from the samples lie within a time period for which a generally agreed calibration curve for the transformation of uncalibrated 14C ages [greater than] 20 kyr bp into calendar time ranges is not yet available. According to the existing, albeit divergent, 14C records for this period determined in different archives, a shift of the true ages by several thousand years towards higher ages might be possible. 1Wild et al., Direct dating of Early Upper Palaeolithic human remains from Mladec, Nature 435, 332-335 (19 May 2005) | doi: 10.1038/nature03585. These bones reveal population variability among true humans. If they were capable of interbreeding, they fit the biological species concept of a single species. Neanderthals have long been used for evolutionary propaganda. The propaganda continues today, in spite of findings like this. For instance, a TV program on The Science Channel showed brutish Neanderthals happening upon the camp of more modern humans, unable to figure out who the strangers were and what made them so smart. The story is made up in the imagination of evolutionists committed to a form of evolutionary racism, calling modern humans us and Neanderthals them. It is no more legitimate than lumping Watusis and Eskimos into different species.Christian Woman to Rebuild Iraqi Science 05/19/2005 According to the Christian apologetics ministry Answers in Action, a woman a Christian woman will help rebuild Iraqi science from the ruins of Saddam Husseins evil empire: Ibrahim Jaafari, the prime minister of Iraq, has appointed Bassima Yousef Boutros, a 44 year old biochemist at Salah Eldin University in Erbil, Iraq as the countrys new science & technology minister. Boutros is a member of the Chaldo Assyrians, a sect of Christians living in Iraq who suffered severe persecution under the previous Baathist regime of Saddam Hussein.The story in SciDev.net says, Boutros has been at the centre of the freedom movement of the ChaldoAssyrians, a sect of Christians living in Iraq who were often persecuted under the countrys previous Baathist regime. She stood in the Iraqi election as a representative of the ChaldoAssyrian people. This news item was noted by the May 20 Science Magazine feature Random Samples Boutros told a Christian Web site, Answers in Action, that she would do her best to use science and technology as the basis to build a civilized Iraq. Having women in science is century-old news (they outnumber men in some circles), but a Christian woman, communicating with a Christian website that supports intelligent design? How can this be? We all know from the media that ID people dont understand science and are the enemies of science. Maybe the Darwin Party should lobby for a return to the good old days in Iraq. What could be worse for Darwinism than a Christian in science leadership who believes in creation and who (gulp) knows biochemistry?Nature Prints Anti-ID Letters 05/19/2005 The May 19 issue of Nature1 printed seven letters responding to its editorial about the intelligent design movement (see 04/27/2005 entry). They were all critical of ID. Not one even tolerated Natures suggestion that scientists try to help students integrate their faith with science. Apparently, last months editorial was not sufficiently vicious against ID, says Rob Crowther on Evolution News. Crowther knows that at least one letter favorable to ID was not printed: the one by Stephen Meyer, interviewed in the April 27 article, who wrote in to correct some misconceptions (see it at Discovery Institute). 1Correspondence, Nature 435, 275 (19 May 2005) | doi: 10.1038/435275a. OK, since some readers are intimidated when Big Science raises its collective voice against anything, lets examine this correspondence. First, we dont know how many readers wrote responses, and of those, how many were pro vs. con. Since Nature was born as a pro-Darwin mouthpiece (see 03/04/2004 commentary), it is not surprising the editors would continue the propaganda campaign of associating Charlie with science and anything else with foolishness. Second, scientists are fallible. The majority has been wrong before, often strenuously, sometimes for long periods of time. Third, scientists can be woefully ignorant of issues outside their specialties; in fact, one of the writers (Roy, below) admits it. This means that a molecular biologist or geneticist may know a lot about a particular molecule or gene but very little about intelligent design theory and the history and philosophy of science except what his liberal Democrat ivory-tower colleagues in academia tell him or her (see 12/02/2004 entry). They may be oblivious to the fact that their work rests on the shoulders of centuries of creationists and believers in design (see online book).Time for Titan to Shine 05/18/2005 Fans of Titan, the large moon of Saturn, are swimming gleefully in scientific reports from Cassini, and its only just the beginning: there are at least 39 more orbits planned of this strangest moon in the solar system. There are too many recent reports to condense into one entry take your pick:
Titan is not the only big recent science story at Saturn. Cassini scientists published 3 papers in Nature May 12 (1, 2, 3) about Phoebe, the outer moon observed at close range on July 11, 2004. They concluded it was a captured object from the outer solar system with a composition like Pluto. The radio science team recently made perfect high-resolution occultation measurements of Saturn and the rings. Cassini now enters prime ringside observations. Orbits 6-14 over the next few months make Saturns rings the prime targets for all the instruments. What are they made of? How small are the particles? How hard or fluffy are they? Do individual ring particles rotate? Will ring spokes be seen again? It should be bonanza time for ring scientists. For a preview of coming attractions, the imaging team released a stunning movie of a newly discovered moonlet in the Keeler gap that sets up waves in the rings like a giant rock skipping the surface of a pond. As for pretty pictures of the Saturn system well, what can words add to stunners like this? These are great days for the Cassini team. Everything has worked so well it is almost scary. Why are the media giving these discoveries so little press? This is one of the greatest achievements in history for solar system exploration, but few are hearing about it. We make these links available for those who have better things to do than listen to daily decadence from the Michael Jackson trial. Come, sail to the new world.Mt. St. Helens: Comeback Kid 05/18/2005 Scientists are amazed at the speed of recovery of Mt. St. Helens, says National Geographic News and MSNBC News. Twenty-five years ago this month, the explosion and pyroclastic flow left a scene of gray devastation. Now, a young forest is already in place. Spirit Lake, made poisonous by the hot flow, surprised researchers by recovering in six years instead of decades. Simple models of ecological succession were overturned; the recovery was diverse and complex. Within months of the blast, some lupines were flowering among the volcanic ash. The fact that anything could do that was just phenomenal, one researcher said. Even small, lowly animals turned out to be quite the homesteaders. NG says, Not long after the blast, frog, toad, salamander, and newt species traveled several miles of inhospitable ground and moved into the affected habitats. The Washington volcano has proved a valuable research laboratory for ecologists. One said, Ive seen it come back to life. Its just amazing what Mother Nature can do. Mother Nature had nothing to do with it, but thats beside the point. Every engineer knows that designing robustness into a system subject to perturbations is a mark of intelligence (see 03/14/2005 entry).Intelligent Design and the Nature of Science 05/18/2005 John Hannas Associated Press article, Kansas debate focuses on defining science, has fingered a basic issue: what is science? The Darwinists argue that ID by its very nature cannot be scientific. Rob Crowther on Evolution News counters that Kansas is the only state that does not have a traditional definition of science, such as Science is a systematic method of continuing investigation that uses observation, hypothesis testing, measurement, experimentation, logical argument and theory-building to lead to more adequate explanations of natural phenomena. Instead, it embeds philosophical naturalism into the definition, by defining science as first and foremost the practice of seeking natural explanations for phenomena. Darwinists, are you interested in maintaining your philosophy, or in finding the truth? Re-read the quote of the month at the top right of this page.Exercise May Reduce Colon Cancer Risk 05/18/2005 Risk of incidence and recurrence of colon cancer appears to be reduced with exercise, according to a report by the American Society of Clinical Oncology reported in EurekAlert. Data now supports what was once just a good idea. Make exercise a part of your routine. Your body needs it in more ways than one. This is the best time of year for outdoor strolls, where you can improve both mental and physical health.Astrobiology Design Paper 05/18/2005: Guillermo Gonzalez (co-author of The Privileged Planet), has a paper in an upcoming issue of Origins of Life and Evolution of Biospheres, entitled, Habitable Zones in the Universe. The paper is available online. Next headline on: Cosmology Origin of Life
Design Language Gushes Out of Article Describing Cell Quality Control
05/18/2005 1Gong et al., Dynamic Error Correction and Regulation of Downstream Bubble Opening by Human RNA Polymerase II, Molecular Cell, Volume 18, Issue 4, 13 May 2005, Pages 461-470, doi:10.1016/j.molcel.2005.04.011 This is how science should be done. No useless Darwinspeak, just careful analysis of design when design is evident. Neither the formal paper nor the press release contained any mention of evolution. Instead, the language of design was shown to be both useful and appropriate in a purely scientific discussion.Mars Radiation Dosage Makes Life Improbable, Even with Global Flooding 05/18/2005 An upcoming (June) paper in Icarus1 states, The biologically damaging solar ultraviolet (UV) radiation (quantified by the DNA-weighted dose) reaches the martian surface in extremely high levels. Earth has an ozone layer and global magnetic field to shield out the damaging rays, but Mars has no known atmospheric filter. Therefore, the existence of life on Mars, at least at the surface, cannot be considered as probable. The European authors compare the situation with Earth: All known life forms on Earth share a common feature: their genetic information is coded in a DNA or RNA chain of nucleotides. When exposed to sufficiently high levels of UV radiation these chains are damaged. Therefore, organisms must either have UV protection mechanisms or efficient repair processes. (Emphasis added in all quotes.)(For a recent study on these repair processes, see this 05/18/2005 story.) The researchers argue that the only likely place to look for putative Martian life forms would be a meter under the polar ice. Even there, however, the radiation is only reduced to terrestrial levels, not eliminated. Error correction would therefore be a prerequisite for Martian life. Another paper in the same issue of Icarus2 describes what effect large meteor impacts could have had on underground aquifers. Based on the liquefaction limit proposed for Mars (Fig. 2A), we suggest that impacts producing craters with diameters of 100 km or greater may have caused global occurrence of liquefaction and streamflow, they say. They estimate there may have been around 1500 such impacts. Each one could have produced violent eruption of groundwater producing catastrophic floods and erosion of outflow channels, assuming a saturated aquifer of global extent may have been present beneath a few km of frozen ground. Impacts could have produced these effects at great distances from the impact site. If a mile-thick aquifer existed under the surface, they estimate that tens of thousands of cubic miles of water could be released from a single large impact. 1Cordoba-Jabonero et al., Radiative habitable zones in martian polar environments, Icarus, Volume 175, Issue 2, June 2005, Pages 360-371, doi:10.1016/j.icarus.2004.12.009. 2Wang et al., Floods on Mars released from groundwater by impact, Icarus, Volume 175, Issue 2, June 2005, Pages 551-555, doi:10.1016/j.icarus.2004.12.003. Short-lived water flowing on Mars is not going to help get life going. In the first place, the mineralogy shows that Mars water was poisonous (see 01/05/2005 entry). In the second place, if the probability of getting one useful protein by chance is astronomically small (see online book), the chance of getting error-correction mechanisms to emerge in time for life to survive the radiation bath is absurdly, ridiculously out of the question. We saw that amino acids have a half-life of eight hours in a Martian environment (see 01/28/2005 story). Do the logic: if error-correcting life is ever found on Mars, it did not arise by chance.Stegosaur Plates Were for Decoration 05/18/2005 Berkeley scientists are disputing the notion that the rows of plates on the backs of stegosaurs served as heat exchangers. Instead, they were for show. EurekAlert and Science Daily explain that this was probably true of other dinosaur decorations: The teams analysis of stegosaur plates lends support to a growing consensus among paleontologists that the weird adornments of many dinosaurs the horns of triceratops, the helmet-like domes of the pachycephalosaurs, and the crests of the duck-billed hadrosaurs likely served no function other than to differentiate species, akin to birds colorful feather ornamentation. If they evolved as decorations, maybe heat exchange was an exaptation i.e., an incidental benefit. (Some stegosaur-like species have little or no plates.) Sexual selection is not a likely explanation, though. Kevin Padian said, we dont see a clear distinction between male and female stegosaurs. Without sexual dimorphism [physical distinctions between male and female], you have no evidence for sexual selection, so you cant invoke sexual display as an explanation. Neither does defense make sense. The structures were too flimsy to provide protection; the munch from an allosaur would be like biting through a sandwich. Padian argued for the only explanation left: that the structures were for elaborate displays for social group recognition, like bird calls, underscoring the importance of behavior to evolution. The structures would have to be pretty large and elaborate to function for social group recognition. How many lucky mutations did that take? A mole or nub on one stegosaurs back would probably not be enough to get the ball rolling, to make all the others think that it was so attractive, he or she would be the only one getting a mate. Maybe some things in nature are just for looks and contribute little or nothing to survival of the fittest. Structures might be amplified by microevolution into extreme forms, but Darwinian theory would have a hard time explaining how they got there in the first place.Rotary Clock Discovered in Bacteria 05/17/2005 What could be more mechanical than a mechanical clock? A biochemist has discovered one in the simplest of organisms, one-celled cyanobacteria. Examining the three complex protein components of its circadian clock, he thinks he has hit on a model that explains its structure and function: it rotates to keep time. Though it keeps good time, this clock is only about 10 billionths of a meter tall. Scientists have known the parts of the cyanobacterial clock. They are named KaiA, KaiB, and KaiC. Jimin Wang of the Department of Molecular Biophysics and Biochemistry at Yale, publishing in Structure,1 has found an elegant solution to how the parts interact. He was inspired by the similarity of these parts to those in ATP synthase (see 04/30/2005 entry), a universal enzyme known as a rotary motor. Though structurally different, the Kai proteins appear to operate as another rotary motor this time, a clock. We learned last time (see 09/15/2004 entry) that the parts interact in some way in sync with the diurnal cycle, but the mechanism was still a black box. Wang found that the KaiC part, a six-sided hexagonal cylinder, has a central cavity where the KaiA part can fit when it undergoes an activation that changes its shape, somewhat like unfolding scissors. Like a key, it fits into the central shaft and turns. The KaiB part, like a wing nut, fastens on KaiB at the bottom of the KaiC carousel. For every 120° turn of the spindle, phosphate groups attach to the outside of the carousel, till KaiC is fully saturated, or phosphorylated. This apparently happens to multiple Kai complexes during the night. How does this keep time? When unphosphorylated, KaiC affects the expression of genes. During the night, when complexed with the other two parts, it is repressed from acting, effectively shutting down the cell for the night. Apparently many of these complexes form and dissociate each cycle. As the complexes break up in the morning, expression resumes, and the cell wakes up. When KaiC separates from the other parts, it is destroyed, stopping its repression of genes and stimulating the creation of more KaiC. In summary, he says, the Kai complexes are a rotary clock for phosphorylation, which sets the destruction pace of the night-dominant Kai complexes and timely releases KaiA. The system sets up a day-night oscillation feedback loop that allows the bacterium keep in sync with the time of day. Wang shares the surprise that a bacterium could have a clock that persists longer than the cell-division cycle. This means that the act of cell division does not break the clock: The discovery of a bacterial clock unexpectedly breaks the paradigm of biological clocks, because rapid cell division and chromosome duplication in bacteria occur within one circadian period (Kondo et al., 1994 and Kondo et al., 1997). In fact, these cyanobacterial oscillators in individual cells have a strong temporal stability with a correlation time of several months. (Emphasis added in all quotes.)Wangs article has elegant diagrams of the parts and how they precisely fit together. In his model, the KaiC carousel resembles the hexagonal F1 motor of ATP synthase, and the KaiA key that fits into the central shaft resembles the camshaft. KaiB, in turn, acts like the inhibitor in ATP synthase. The close relationship between the two systems may well extend beyond their structural similarity, he suggests in conclusion, because the rhythmic photosynthesis-dependent ATP generation is an important process under the Kai circadian regulation. 1Jimin Wang, Recent Cyanobacterial Kai Protein Structures Suggest a Rotary Clock, Structure, Volume 13, Issue 5, May 2005, Pages 735-741, doi:10.1016/j.str.2005.02.011. Need we tell readers what we are about to say? There is no mention of evolution in this paper. The inverse law of Darwinese stands: the more detailed the discussion of cellular complexity, the less the tendency to mention evolution.New Rodent Discovered in Southeast Asia 05/16/2005 To find something so distinct in this day and age is just extraordinary, says Dr. Robert Timmons of a stubby-legged, hairy rodent discovered in Thailand. For all we know, this could be the last remaining mammal family left to be discovered. Its not exactly like a squirrel, rat, chinchilla or guinea pig: it belongs in a whole new family. See story on EurekAlert and Science Daily. The BBC News is celebrating another famous mammal specimen that bamboozled the experts 200 years ago when it was first brought to England: the platypus. Some thought it was a joke when they first saw a mammal with a ducks bill and webbed feet. Update 05/19/2005: a new species of monkey was discovered in Tanzania, reports National Geographic News. It was all the more surprising to find this 3-foot tall mammal, considering that Tanzania is one of the biologically well-known countries in Africa. The new primate is called the highland mangabey and lives in the mountains at elevations up to 8,000 ft. See also the unexpected discovery of a lungless salamander in Korea (see 05/10/2005 entry). Who knows what other strange animals remain to be discovered in remote parts of the world. Keep your eyes open for that duck-billed mastodon that might be lurking in an alley in San Francisco. Maybe Tom Wellers menagerie of skunkosaurs, wooly turtles and saber-tooth ducks will some day be seen as prophetic, and the Darwinists will marvel at more cases of convergent evolution.Can Gene Duplication Promote Evolution? 05/15/2005 Imagine you had no mouth but needed to eat. A hamburger comes flying at you. When it hits your body, your skin folds around it and pinches off, sealing it inside. Dozens of 3-armed parts form a geodesic dome around it and carry it to the stomach. Once delivered, all the parts are recycled for the incoming freedom fries. If this sounds bizarre, its kind of what really happens in your cells. Except for specialized channels that accept particular molecules, like water (12/20/2001 and salt (01/17/2002), a cell has no mouth; it is surrounded by a continuous membrane. When large nutrients need to get in, the membrane has acceptors on the outside that signal a cascade of events. The membrane dents inward and envelops the particle. On the inside, proteins called clathrins form a geodesic structure around the incoming vesicle as the membrane pinches off and seals the contents inside. Other proteins and enzymes stand at the ready to deliver the nutrient where needed. This process goes on continually and is called endocytosis. A press release from the University of Queensland says the cell eats its entire skin every 30 minutes. Progress continues to be made understanding clathrin-mediated endocytosis since our 10/07/2003 entry, but the evolutionary origin of this elegant system seems illusory. UC and Stanford biochemists writing in PNAS1 noted that two forms of clathrin are so different, being coded by different genes, they must have had separate evolutionary histories. They propose this happened during gene duplication events up to 600 million years ago. Andreas Wagner, however, publishing in Molecular Biology and Evolution,2 casts doubt on that method of evolutionary change: I here estimate the energy cost of changes in gene expression for several thousand genes in the yeast Saccharomyces cerevisiae. A doubling of gene expression, as it occurs in a gene duplication event, is significantly selected against for all genes for which expression data is available. It carries a median selective disadvantage of s > 10–5, several times greater than the selection coefficient s = 1.47 x 10–7 below which genetic drift dominates a mutants fate. When considered separately, increases in messenger RNA expression or protein expression by more than a factor 2 also have significant energy costs for most genes. This means that the evolution of transcription and translation rates is not an evolutionarily neutral process. They are under active selection opposing them. My estimates are based on genome-scale information of gene expression in the yeast S. cerevisiae as well as information on the energy cost of biosynthesizing amino acids and nucleotides. (Emphasis added in all quotes.)Whatever the origin of clathrin, its reputation as a versatile molecule is growing. In the April 28 issue of Nature,3 three Cambridge biologists wondered what it does when endocytosis is halted during cell division. They discovered that clathrin has another essential job: Clathrin has an established function in the generation of vesicles that transfer membrane and proteins around the cell. The formation of clathrin-coated vesicles occurs continuously in non-dividing cells, but is shut down during mitosis, when clathrin concentrates at the spindle apparatus. Here, we show that clathrin stabilizes fibres of the mitotic spindle to aid congression of chromosomes. Clathrin bound to the spindle directly by the amino-terminal domain of clathrin heavy chain. Depletion of clathrin heavy chain using RNA interference prolonged mitosis; kinetochore fibres were destabilized, leading to defective congression of chromosomes to the metaphase plate and persistent activation of the spindle checkpoint. Normal mitosis was rescued by clathrin triskelia [complete 3-part clathrin proteins] but not the N-terminal domain of clathrin heavy chain, indicating that stabilization of kinetochore fibres was dependent on the unique structure of clathrin.This is not just an incidental task for clathrin to do till cell division is over. The importance of clathrin for normal mitosis, they say, may be relevant to understanding human cancers that involve gene fusions of clathrin heavy chain. 1Wakeham et al., Clathrin heavy and light chain isoforms originated by independent mechanisms of gene duplication during chordate evolution, Proceedings of the National Academy of Sciences USA, 10.1073/pnas.0502058102, published online before print May 9, 2005. 2Andreas Wagner, Energy Constraints on the Evolution of Gene Expression, Molecular Biology and Evolution, 2005 22(6):1365-1374; doi:10.1093/molbev/msi126. 3Royle et al., Clathrin is required for the function of the mitotic spindle, Nature 434, 1152-1157 (28 April 2005) | doi: 10.1038/nature03502. Gene duplication is one of the mechanisms Darwinists invoke when Natural Selection seems inadequate for a job, and they want to make it seem like there are other tricks in the toolkit of Charlie the Magician. The abstract of Wagners paper seems to make it clear that duplication is not going to help. If two tools are fighting each other, like front and rear tires spinning in opposite directions, the vehicle is not going anywhere. Now go back and reread the 10/07/2003 entry about endocytosis and see if you think the Darwin Party has a prayer for explaining it. Be sure to watch Allison Bruces cool video of clathrin making geodesic domes. How many of you would vote for chance and natural selection producing this geometrical marvel? Someone other than a Darwinist, who not only has a prayer but a Recipient, should get a hearing.Heat and Light Emitted in Collisions of Darwin vs ID 05/13/2005 Rhetoric over evolution is increasing in the media largely because of the school board debates in Kansas (see 04/29/2005 entry and previous Education links). The largely pro-Darwin press seems to be giving a little more coverage to the ID side; the anti-Darwin alternative media are getting more bold about asserting their views.
Tyson is a Darwin demagogue who cannot be trusted. Look at the propaganda piece he pulled in the TV series Origins (see 09/29/2004 review), a Saganesque phantasmagoria of evolutionary imagery two-thirds animation and one-third irrelevant data. There, as here in this interchange, he shows himself a bluffing ignoramus about history and biology, more interested in snappy sound bites than truth. He repeats debunked ideas about Copernicus and Galileo, even when confronted about it. Remarkably, he preaches Lamarckian ideas, even when confronted about that, too: he said, Frequent use of organs or appendages, where that use contributes to ones survival until reproductive years, will reinforce the existence and utility of that feature, as continuous variations of that feature get further tuned for survival. Can you trust someone that ignorant about evolutionary theory making TV specials about it? Frequent use or disuse has nothing to do with natural selection; thats basic high school Darwinese. Unless a random mutation brings about some selective advantage, you can use your parts to the ultimate and none of the increased fitness will make it into the progeny. Tyson also is a naive positivist, reiterating the canard that, despite a century and a half of evolutionary frauds, science has built-in error correction that eventually leads to progress. OK, what will he think when science corrects the errors of Darwinism? He also lies about Darwins theory of inheritance: You are mistaken if you believe that Darwins ideas of inheritance were wrong, he chides Bump. What? Pangenesis was out of style as soon as Darwin published it.Stanford Student Debate: Is Intelligent Design Science? 05/13/2005 Michael Behe, author of Darwins Black Box, spoke recently at Stanford. This led two students to publish reviews, one pro and the other con, about intelligent design in the Stanford Review. Tristan Abbey asked, Are Darwinists Chickens? for their reluctance to allow critical scrutiny of their theory. Paul Laddis tried to debunk irreducible complexity in his rebuttal, The Dogmatists New Clothes. Its good to see students engage the controversy when so many Darwinists dont even want to debate this issue (see 04/29/2005 and 04/27/2005 entries). Paul Laddis, despite his valiant attempt at overcoming irreducible complexity with the co-option argument, fails to mention that there is irreducible complexity everywhere, not just with the bacterial flagellum. Like Scott Minnich emphasizes in the film Unlocking the Mystery of Life, Darwinists need to address not only the parts that are similar between different structures, but the assembly instructions, which are even more complex. You cannot invoke co-option endlessly; Minnich says, You can only carry that argument so far until you wind up borrowing parts from nothing. Laddis starts with a complex protein: stop |