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I cant help feeling at the same time that this space effort of ours is bigger even than a rivalry between the United States and Russia. The heavens beyond us are enormous beyond comprehension, and the further we penetrate them, the greater will be our human understanding of the great universal purpose, the Divine Will itself. | ||||
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Thermal data from Mars 2001 Odyssey indicate possible warm spots in the Hellas Basin. Thats all Nick Hoffman at Melbourne University in Australia needed to suggest that these may be ice towers, like those in parts of Antarctica, reports New Scientist. And if so, why not life? Warmth, water, what more do you need? At least the pictures of Antarctic ice towers are interesting.DNA End Capping More Complex Than Thought 07/25/2003 An idea has been floating around for years to explain why cells grow old and die. Biochemists have known that DNA strands have end caps, called telomeres. These caps keep them from unwinding or sticking to other DNA strands, which, when it occurs, creates a crisis in the cell, and usually triggers cell death or apoptosis. Each time a cell divides, the story goes, it loses a telomere, because the duplication machinery could not get a grip on the last cap. This seemed to act like a countdown timer. When the telomeres hit zero, pop goes the apoptosis. An enzyme has been known, however, that repairs telomeres. Named telomerase, it was thought to work only in certain kinds of cells, and has been implicated in cancer. The idea was that out-of-control telomerase made cancer cells immortal when they should have died. Well, once again, the picture is more complicated than that. An international team has just reported in the journal Cell 07/25/2003 that Telomerase Maintains Telomere Structure in Normal Human Cells. They found that all cells express this repair enzyme, and that there is a complicated interplay between regulatory factors to keep a normal cell functioning through multiple cell divisions, with just the right number of telomeres for its needs and environment. Their observations support the view that telomerase and telomere structure are dynamically regulated in normal human cells, and that telomere length alone is not a sign of old age and impending death. Only when things go wrong with these regulatory mechanisms do cells either lose their last telomeres and die, or go wild into immortal replication cycles as in cancer. Telomerase is a key ingredient both in the regulation of cell proliferation and replicative lifespan, they found. Targeting telomerase in cancer treatment as a bad molecule may not be wise, therefore. Its apparently a vital part of a normal cells operation. One thing is clear: the relationships among telomere length, telomere expression, and replicative lifespan are more complex than previously believed. The complexity of life and the credibility of Darwinian evolution are inversely proportional. The complexity of life is increasing.Textbooks Fail the Test 07/25/2003 The Texas textbook controversy is heating up. To inform upcoming debates about the teaching of evolution in the Lone Star state, the science fellows of the Discovery Institute have provided A Preliminary Analysis of the Treatment of Evolution in Biology Textbooks currently being considered for adoption by the Texas State Board of Education. They evaluated 11 textbooks for factual accuracy on the teaching of four commonly-used evidences for evolution: (1) The Miller-Urey experiment, (2) Darwins tree of life and the Cambrian explosion, (3) Vertebrate embryos, including Haeckels fraudulent drawings, and (4) Peppered moths. The highest overall grade was a C-. Six textbooks received a D or D-, and four received F. The 41-page document includes the criteria used for evaluation. For instance, did the textbook include drawings known to be fraudulent? Did it assume the truth of universal common ancestry without question? Did it fail to mention any controversies or serious questions among scientists? Did it reproduce staged photos that do not reflect the true natural situation? In general, the Discovery Institutes grading standards simply reflect the Texas Education Codes own science guidelines, namely, (1) that each topic should be presented in a manner free from factual errors, and (2) that enables students to “analyze, review, and critique scientific explanations, including hypotheses and theories, as to their strengths and weaknesses using scientific evidence and information.” That science textbooks would include false, fraudulent, and misleading information is scandalous, yet this survey shows that the largest textbook market in the country is being given only two choices: evil, and the lesser of evils. Not one of these textbooks is telling the truth on any of these four topics. The highest grade in any area was a C. The best of the worst was Biology by Campbell and Reece; it only scored an overall grade of C because it didnt mention peppered moths or Haeckels embryos, but it got a D on the Miller-Urey experiment, and a C on the Tree of Life because it at least mentioned the Cambrian explosion as a mystery although it didnt explain why this was a challenge to Darwins theory. Only one other got a C on this item, and only one other got a C on vertebrate embryos because it showed more modern, actual photographs of embryos instead of Haeckels fudged 1870s drawings but even then it lied that the early stages of embryos are remarkably alike, which they are not.Quick Takes 07/24/2003 Sometimes stories come in too fast for our overworked editor to assimilate them. Some others dont warrant a detailed treatment. Here are some items you might like to follow up on yourself:
Evolutionists like to speculate and argue endlessly, because it keeps them gainfully employed, but where is the really solid evidence? Much of it is like a dime in a dryer. It bounces around and makes a lot of racket in the hot air, but it doesnt amount to much. Real science lets you buy a sandwich where you can eat the wrapper.Evolution of Aging: Grandparents Matter 07/23/2003 Poor grandparents; they have not gotten much respect from evolutionary theorists. The classic evolutionary theory of aging explains why mortality rises with age: as individuals grow older, less lifetime fertility remains, so continued survival contributes less to reproductive fitness, explains Ronald D. Lee (UC Berkeley) writing in the Proceedings of the National Academy of Sciences. In other words, after childbearing age, natural selection has no use for an individual, so he or she just withers away. Lee has a new approach that rescues the self-esteem of grandparents in his paper, Rethinking the evolutionary theory of aging: Transfers, not births, shape senescence in social species. By transfers, Lee means all the nurture and care that postreproductive relatives contribute to the care of the young, so that they grow up to be fertile adults. That could include foraging, guarding, teaching the young, teaching the parents, or helping cuddle the baby. In the paper, Lee calculates the selective value of these transfers and concludes they are actually the most important factors: in fact, he says, For species at the optimally quantity-investment tradeoff for offspring, only the transfer effect shapes mortality, explaining postreproductive survival and why juvenile mortality declines with age. He feels the dominant paradigm formulated by Medawar, Williams, Hamilton and others, with its focus on fertility alone ... is limited. Not only grandparents, but older siblings and other relatives all make a contribution toward the fertility of childbearers. The more post-natal care is expended by relatives on a hatchling or baby, whether among dolphin populations, birds, honeybees or primates, the more transfer effects become important, and the more they decrease the mortality of the postreproductive generations. Lee is surprised no one thought of this before: Strangely, transfers have not been incorporated in formal theories of aging, although their importance is widely appreciated, he remarks. Lee feels his enhanced theory of aging has important implications on evolutionary theory in general. None of the previous aging theories formally incorporated the flow of resources transferred to offspring. Reproduction is typically treated as a purely demographic matter: individuals at birth turn into sexually mature adults over the passage of time, Lee comments. His approach, by contrast, has implications for other areas of evolutionary theory and life-history analysis, because it implies a reformulation of the concept of reproductive value, among other things, including deep links to kin selection and inclusive fitness. Sex is cheap, but care is costly: From one point of view, fertility is most fundamental to evolution because it alone transmits genes to the next generation. From another point of view, however, the production of vast numbers of replicates of genetic material is cheap, whereas intergenerational transfers of food and care are costly and are often the binding constraint on sexual reproduction. This sounds similar to what Jason B. Wolf told us in March about indirect genetic effects. Here an evolutionary myth has been promulgated for decades (Medawar proposed his aging theory in 1952), and it went virtually unquestioned for half a century. All of a sudden, somebody says, Uh, arent we overlooking something? The point is not that Ronald Lee has finally hit on the ultimate theory that explains all. Undoubtedly his will be toppled in time as well. The point is that, despite the integral calculus equations in an evolutionary paper, the assumptions make or break the story. An astrologer could assign variables to signs of the zodiac and manipulate them with fancy derivations, but if the assumption that the stars influence human behavior is incorrect, who cares what follows? Medawar manipulated fertility according to Darwinian assumptions, and Lee manipulates fertility + transfer effects according to Darwinian assumptions. If the Darwinian assumptions are wrong, the conclusions are going to be wrong, too.Home Schoolers Find Intact Edmontosaurus Skeleton 07/23/2003 The Christian home-school group that found the worlds fourth known Allosaurus skull in 2002 has now found an Edmontosaurus in South Dakota, reports a press release from Vision Forum. The dig, under the direction of Pete DeRosa and Pete DeRosa, Jr., both experienced dinosaur hunters, with their organization Creation Expeditions, found the fully-articulated skeleton with so much detail that even the skin impressions contained pigment. The skin, which is scaly like a crocodiles, does not support the speculation that the duck-billed, 30 foot hadrosaur was a partially feathered dinosaur evolving into a bird. The deposit also contained fossils of marine creatures, which by evolutionary standards, should not be there, including garfish and turtles. The group also found tyrannosaur teeth and a triceratops frill, but their prize catch, with its four-foot long, finely-preserved skull, they nicknamed Ezekiel. (The press release, containing photos from the expedition, is available to those subscribing to the Vision Forum newsletter.) So long as they follow sound excavation and preservation techniques, and document and report the findings with high standards, more power to them. Dinosaur bones do not belong to evolutionists. The evidence belongs to everyone willing to seek it out and gather it with integrity. Technique does not correlate directly with interpretation. Proper technique strives to accurately record and preserve what is there. Any group that abides by high technical standards, therefore, should have a shot at the evidence. What they are doing is certainly better than what some Chinese opportunists do, carelessly digging up fossils to sell, and even manufacturing fakes.We All Evolved from Choanoflagellates 07/22/2003 The BBC News today has a picture of a one-celled microbe with a whip-like appendage and the caption, We all evolved from something like this. With unabashed, matter-of-fact prose, David Whitehouse, the BBC News Online science editor discusses how these organisms, the choanoflagellates, appear to be near the common ancestor of all animals. Though the details are shrouded in mystery, this far-reaching conclusion is one which sheds light on one of the most dramatic evolutionary leaps in lifes history the origin of animals. What is this conclusion based on? These organisms have a kind of molecular sensor common to all animals, and now it has been discovered that they have more fundamental molecular processes in common with animals in fact, the same molecular pathways used by all animals were in place 600 million years ago, and have their origins in an ancient soup of microscopic single-celled microbes. Sean Carroll is surprised: We have found that the cell biology toolkit was pretty sophisticated before the dawn of animals. This toolkit is employed by higher animals in many basic cellular processes and sensory functions like hearing, but what function the tools have within choanoflagellates is a mystery at this time. Nicole King, a colleague of Sean Carroll, has an explanation: This is consistent with the idea of evolution as a tinkerer, cobbling together tools that are already available, rather than inventing a new widget for each job. These scientists are confident that they have selected the right organism to understand what happened on the eve of animal evolution. This is so dumb, and so devoid of scientific logic, that it is time to take up pens and write the BBC to complain. Evolution is not a person that can tinker. Hidden in this mass of fluffy-headed nonsense, like a pebble in a dust devil, there is a little bit of scientific evidence. And what is it? Complex systems already exist, down in the simplest of organisms. Sophisticated tools and signaling systems are functioning in a thriving, complex organism that is well adapted to its environment. Is that evolution? Only the most gullible dogmatist could take that kind of evidence and spin it into the opposite of its clear implications. If you love good science, dont let the storytellers get away with this column of spinning hot air. Force them to prove their belief, not assume it, and the pebble will fall back onto solid ground where it belongs.Solar Systems Like Ours Rarer Than Predicted 07/21/2003 The planet-finding duo of Paul Butler and Geoff Marcy, with colleagues Brad Carter et al., announced an extrasolar system with some similarities to ours. More interesting, however, are their statements about how unusual our solar system looks compared to the majority of extrasolar ones. Our system has a gas giant (Jupiter) at 4 astronomical units (AU), but most extrasolar giant planets found so far are larger, closer in, and in non-circular orbits. This would make for a very perilous environment for any interior small rocky planets (like Earth); most likely, they could not survive for long and would be ejected or swallowed. The following statements come from a Rapid Release (7/16/03) paper of the Astrophysical Journal (emphasis added): Perhaps the most critical question facing the field of extrasolar planetary science is whether solar system analogs (i.e., systems with giants planets in circular orbits beyond 4 AU and small rocky planets orbiting in the inner few AU) are ubiquitous or rare. ...Although the data are still preliminary, current surveys show only about 7% of extrasolar planets have circular orbits. Future missions like NASAs Space Interferometry Mission (SIM, 2009) should be able to detect inner planets down to 3 earth masses. Farther out projects like the NASA Terrestrial Planet Finder (TPF) and ESAs Darwin will try to glimpse biomarkers in small watery worlds around other stars. On a related subject, the BBC News quotes planet-hunters Jeff Valenti and Debra Fischer (UC Berkeley) claiming, based on their surveys, that only late stars seem able to form planets. This is because only late stars contain enough heavy elements essential for planet formation. If so, this may be the baby boom for planet formation in the history of the universe, they say. Only 5% of stars surveyed have planets, but among those stars with higher content of heavy elements, the number climbs to 20%. See also the press release on UC Berkeley News. Lissauers comment recalls the astonishment planetary scientists had during the 1980s when the two Voyager spacecraft revealed moon after moon in the outer solar system with features unlike anything astronomers had imagined possible volcanoes, complex surfaces, atmospheres, geysers and canyons. Now more assumptions are being overturned by the data. Believers in naturalistic philosophy can always respond that, even if planetary systems like ours are rare, there are so many stars out there that there still could be billions of earthlike planets in the universe. That argument would be impossible to disprove even with Warp 20 spaceships. Nevertheless, it is a valuable lesson to see a prediction, made in the absence of data, fall by the wayside once measurements became available. We should always welcome measurements. They have a way of turning idle speculations into idol speculations.Do Fossils Accurately Indicate Past Biodiversity? 07/21/2003 Piecing together a record of ancient biodiversity is a difficult task. A number of factors can bias the record, leading to false conclusions. For instance, fossils might be abundant only in certain outcrops; some habitats may be more conducive to fossilization than others (e.g., minerals in the groundwater); certain hard parts, such as marine shells, may fossilize more readily than soft-bodied animals such as jellyfish, and even hard parts within one organism may disintegrate at different rates. How much exposure was there to sunlight or predators? Is the record biased by collectors focusing on convenient areas close to home? These and other questions are explored in Science News, July 19, 2003. Caution must be exercised in interpreting the flora and fauna of the past. The article highlights teams in Africa and the Gulf of California that have surveyed landscapes, counting bones of recently-deceased animals, to get an indication of what types of bones are most likely to remain long enough to become fossil candidates. Scientists are also working to compile all known fossils in international databases. This may help paleontologists understand what biases may exist, where the gaps are, and what the evidence means. Not every organism that dies becomes a fossil, Sid Perkins, author of the article, reminds us. In fact, fossilization is the exception, not the rule. Only certain combinations of biological materials, environmental conditions, and fate will preserve a recently dead organism and give it a chance at fame in a museum display. Perkins agrees that rapid burial is usually a prerequisite for fossilization. Bones that dont end up in the gullet of scavengers often fall prey to environmental degradations, he explains. For example, exposure to harsh sunlight tends to quickly break down bones, which in living animals are made of up to 30 percent protein by weight. In the July 18 issue of Science, Andrew B. Smith has a related article, Making the Best of a Patchy Fossil Record. These are important concerns that warrant attention, but paleontologists have been collecting fossils for hundreds of years. Only rarely does a location yield anything remarkably new; mostly it is just more of the same. Last Oct. 25 we headlined a report that the fossil record is better than expected, and essentially complete. Evolutionists cannot hold out much hope that missing links in their tale will ever be found. In fact, it is the chain that is missing, not the links.Lucys Husband Only Had Eyes for Her 07/21/2003 Males of Australopithecus afarensis, of which Lucy is the well-known prototype, were apparently only 15% larger than the females, compared to the 50% size difference among modern orangutans and gorillas. This is leading some paleoanthropologists to consider the social impact this might have had on the population, according to Science News: Such a moderate sex difference in Australopithecus afarensis suggests that males in the ancient species formed coalitions with each other and often established monogamous relationships with females just as do modern human males and those of other species with nearly equal-size sexes, say Philip L. Reno of Kent (Ohio) State University and his coworkers. This is so stupid. Is it any wonder the Early Man and Dumb categories so often go together? Even evolutionists have doubts about how relevant Donald Johannsons self-promoted find is to the alleged human lineage (see April 25 headline.) Paleoanthropologists are stretching what little data they have into imagination space, desperately seeking to find naturalistic causes for human psychology in our assumed apelike past. This is fodder for a new comedy series, in which I Love Lucy is conveyed in grunts instead of words.Earth Atmosphere Protects from Rock Battlefield 07/21/2003 Kids have rock fights despite their parents warnings. If you remember being a guilty party to these war games, imagine how cool it would have been to tell the enemy you were invulnerable, because you were surrounded by an invisible force-field. Well, Earth can boast such a thing to the moon, reports Science News: Although Earth and the moon inhabit the same cosmic neighborhood, our planet has far fewer scars from extraterrestrial impacts because incoming objects burn up in its atmosphere. A new computer model suggests that Earths thin layer of air is an even better shield than previously thought.The article says that scientists at Imperial College modeled the effect of the atmosphere on incoming stony and iron meteorites, and found it 50 times more effective than earlier models suggested. As a result, most dangerous rocks get pummeled to dust before they can cause harm. The number of large impact craters found on earth, about 200, is much less than the number on the moon, Mercury and Mars and most other bodies in the solar system lacking such an atmosphere. One less thing for you to worry about. Have a nice day.Cell Translation Uses Rotating Locks and Keys 07/21/2003 A French team has studied one of the molecules involved in the translation of DNA to protein, and found that it does some nifty shape changes when its accessory proteins are in place. The molecule is threonyl-tRNA synthetase, one of the family of 20 specialized molecules that attach the appropriate amino acid to its matching transfer-RNA (tRNA) carrier. The operation involves four parts: the synthetase, the tRNA, the amino acid threonine, and ATP. The abstract describes some of the activity observed: The tRNA, by inserting its acceptor arm between the N-terminal domain and the catalytic domain, causes a large rotation of the former. Within the catalytic domain, four regions surrounding the active site display significant conformational changes upon binding of the different substrates. The binding of threonine induces the movement of as much as 50 consecutive amino acid residues. The binding of ATP triggers a displacement, as large as 8 angstroms at some C positions, of a strand-loop-strand region of the core beta-sheet. Two other regions move in a cooperative way upon binding of threonine or ATP: the motif 2 loop, which plays an essential role in the first step of the aminoacylation reaction, and the ordering loop, which closes on the active site cavity when the substrates are in place. The tRNA interacts with all four mobile regions, several residues initially bound to threonine or ATP switching to a position in which they can contact the tRNA. Three such conformational switches could be identified, each of them in a different mobile region. The structural analysis suggests that, while the small substrates can bind in any order, they must be in place before productive tRNA binding can occur.The paper by Moras et al. is published in the upcoming Journal of Molecular Biology, August 2003. (For a previous headline on the tRNA synthetase family, see June 9.) If you can wade through the jargon, this is really quite amazing. Remember in Star Wars how R2D2 could insert a sophisticated attachment into the ships computer, rotate it precisely, and get the information out? Thats reminiscent of what is happening here in a nanometer scale. There are three accessories that must mate precisely to the synthetase, and when they do, there are large rotations and movements that take place. As a result, the tRNA gets bound to its appropriate amino acid so that it can fasten to a growing protein chain in the ribosome. The specificity of these multiple parts leaves little opportunity for error, and also speeds up the reactions by orders of magnitude. The parts slide, rock and rotate right on cue, but they wont work without proper authentication; i.e., without all the necessary parts in place. In addition, proofreading occurs at multiple checkpoints to weed out errors even among very similar components. This all happens at a high speed: 40 amino acids can be assembled per second in the ribosome, including all the steps described and many more, with high fidelity. This is astonishing. How could something this precise and ordered be the result of chance? Would you bet your life on it?Is It Scientifically Justifiable to Analyze the Evolution of Rape? 07/18/2003 Many people were upset in 2000 when Randy Thornhill and Craig Palmer published a book entitled The Natural History of Rape, because it seemed to rationalize violent behavior as an evolutionary adaptation of the human male psyche, rather than a moral evil. P.C. Chan, a biological anthropologist at Cambridge, expresses his views on that episode in the July 18 issue of Science. Chan agrees that Thornhill and Palmer deserved to be criticized, but more on the basis that their work was bad science, not so much that it is improper to analyze human behaviors in terms of evolution. In his book review of a new book edited by Cheryl Brown Travis, Evolution, Gender and Rape (MIT Press, 2003), which takes a decidedly dim view of Thornhill and Palmers book, Chan feels the opposition goes overboard and throws out the baby with the bathwater (emphasis added in all quotes): The failure of Evolution, Gender, and Rape does not lie in its wholly justified critiques of A Natural History of Rape, many of which are thoughtful, excellent, and well written. Rather, having found a legitimate sociobiological target for attack, too many contributors suggest that all efforts to understand any potential for evolved propensities or tendencies in human behavior can now be dismissed--tarred with the you support rapists brush. Politics are applied to damn all behavioral biology, even when issues such as power and mate choice can potentially be usefully explored in a biological context. But then, as many of the contributors claim, the biological context does not exist--at least not for humans, though fruit flies are (barely) given the benefit of the doubt. Evolutionary biology sensu Thornhill and Palmer (and probably that of some of the rest of us who work with the evolution of behavior) can be cast off as merely the rewriting of the political and gendered context within which we theorize. This may indeed be valid when it comes to arguments about the natural history of rape, but to dismiss all such attempts as belonging to the same class of thinking does a disservice to evolutionary biology in general.Before this conclusion, Chan made it clear he thinks Thornhill and Palmer were bad guys, guilty of bad theory, bad analysis, bad history, and bad writing. And he emphatically answers no to the questions, is rape a universal male behavior? Does it need to be examined from an evolutionary perspective? Similarly, his answer is clearly no to the question, If a behavior exists, does it by default require a just-so story in order to be understood? He points out that rape is a behavior of a small minority of males who are usually ostracized, and that contrary to the image of the predatory Pleistocene male, forcibly mating with unchoosy females, female choice is a strong force in most populations: Females do choose. They choose nice mates; parental mates; healthy, vigorous, mentally alert mates--be they fruit flies, blackbirds, zebra finches, elephants, or humans. That female choice would exacerbate the violent, unpredictable, political, and thuggish tendencies of the human rapist seems unlikely at best. Female choice is thus central to many of the arguments, both biological and sociological, here. It is a pity that the book does not explore this concept for its feminist contributions.Against this background, Chan feels much of the new book fulminates against any attempt to explore human behavior using evolutionary theory. He agrees that criticisms of some of the major excesses of evolutionary psychology are justified. Yet he is concerned that an overreaction will diminish the useful work that some sociobiologists are doing, that can help shed light on human behavior. Describing something is not the same as endorsing it. Books like Evolution, Gender, and Rape undermine legitimate sociobiological work, and Darwin becomes the class, gender, and societal enemy of the female people. P.C. Chans book review is entitled, EVOLUTIONARY PSYCHOLOGY: Reason, Rape, and Angst in Behavioral Studies. Female choice? What female choice? A female does not choose to be raped.Another Darwinian Assumption Found Untenable 07/17/2003 Evolution can be fast, and it can be slow. It can drive populations toward chaos, and away from it. It can make predator-prey relationships stable, or oscillatory, in phase or out of phase. Confused? Peter Turchin (U. of Connecticut), writing in the July 17 issue of Nature tries to explain (emphasis added in all quotes): In their study of predator-prey cycles, investigators have assumed that they do not need to worry about evolution. The discovery of population cycles driven by evolutionary factors will change that view.The work to which he refers is a lab study on rotifers, microscopic aquatic animals, and the green algae on which they feed. The oscillations between predator and prey populations were found to be unexpectedly out of phase. Usually predator and prey populations track each other: e.g., more wolves, less elk; less wolves, more elk. But the only way Yoshida could make sense of their rotifer and algae measurements was that the populations were evolving rapidly toward and away from chaos in an erratic way. The lab environment insured that external environmental factors were not involved. Turchin feels this overthrows previous assumptions that evolution occurs on much longer timescales than oscillations. Instead, the new results show: that evolution can be an intrinsic part of oscillations, raising an exciting possibility that some populations might rapidly evolve both towards and away from chaos. Perhaps this is the explanation of the puzzling observation that some Finnish vole populations shift from a stable regime to oscillations, whereas others do precisely the reverse.Turchins News and Views article is entitled, Ecology: Evolution in population dynamics. The rotifer study by Yoshida is entitled, Rapid evolution drives ecological dynamics in a predator-prey system. Let us understand that the lab rotifers are still rotifers, and the algae are still algae. What has evolved? Only the storytelling ability of the evolutionist. Calling rotifers predators and algae prey is a stretch (is your salad considered the prey of the mighty hunter?). Notice that the work was done in the laboratory, not in the field. What environmental effects might nullify the hypothesis?Evolutionists Puzzle Over Ontogeny vs Phylogeny 07/16/2003 Just when I make ends meet, it comes apart in the middle. This common household complaint could also be the lament of the evolutionary biologists who try to get ontogeny (embryonic development) connected to morphology (body plan of the organism) and simultaneously in sync with phylogeny (evolutionary ancestry). In a book review in the July 16 issue of Nature, Axel Meyer praises Alessandro Minellis efforts along this line in his new book The Development of Animal Form: Ontogeny, Morphology, and Evolution (Cambridge, 2003) but openly discusses puzzles that do not seem trivial. No matter how large or small or finely adapted the adult organism, from dinosaur to orchid to bald eagle, all started as a one-celled, fertilized egg. To what extent does evolution act on that zygote, and the developmental pathways that follow, and to what extent does it act on the mature organism, or on the population? Meyer talks about how philosophers and biologists have been puzzling over the connection between development and evolution for 180 years. They keep oscillating between the big picture and the details (There and back again he quips, to borrow The Hobbits subtitle). Each return to the big picture opens new questions. Getting into the heart of the argument with a truism, Selection can only act on things that are developmentally possible, Meyer makes it sound like the big picture is not much clearer now than in Darwins day, and maybe even less so (emphasis added in all quotes): Selection can only act on things that are developmentally possible. In other words, developmental mechanisms constrain evolutionary possibilities, and they are often very conservative, carrying the load of previous evolutionary lineages, as Alessandro Minelli puts it. Sometimes, however, as in the case of the direct and indirect development (without and with free-swimming larvae, respectively) of closely related species of sea urchin, development can also be surprisingly variable. But how do developmental mechanisms themselves change during evolution, and how does evolution in turn affect development?These are indeed big questions, and Meyer thinks Stephen Jay Gould and others have made progress in previous writings. Evolutionary development theory, so-called evo-devo, is the latest attempt to pull these things together. Any news in the last 15 years? In a nutshell, the comparative application of molecular developmental methods that are interpreted in a rigorous (often molecular) phylogenetic framework. But that sounds like assuming what needs to be proved. Are there any hard data supporting evolutionary development? Recent comparative developmental and genomic studies have yielded the apparently paradoxical insight that many genes (particularly Hox genes: cf. Science 07/18/03) and their interactions in genetic networks are astonishingly conserved in evolution. These results were unexpected and raised the question of how the diversity of body architecture in different phyla has arisen, given that genetically so much has remained the same during the past several hundred million years. The historically static view of homology proposed in the nineteenth century by Richard Owen, and still widely taught today, [i.e., that similar structures which perform different functions imply underlying relationships] has also been revolutionized by these comparative developmental studies and, in my opinion, has been largely abolished. Subsequent phylogeny-based theories of homology are increasingly being questioned because it is unclear whether developmental processes and mechanisms should be part of the definition of homology.After elucidating these big questions, Meyer leaves them unanswered. He switches to praising Minelli as an important contributor to the discussion, and calls his book a must read for any practitioner in the fields of developmental and evolutionary biology — fields that, at long last, are beginning to be unified. On a related subject in the same issue of Nature, Thurston Lacalli in Evolutionary biology: Body plans and simple brains, discusses current thinking about the origins of these things. Some of the questions include:
That evolutionists are never alarmed at damaging admissions like this is a measure of their intellectual lethargy. Since they already know in their heart of hearts that Darwinian evolution is gospel truth and that no alternative is even worth considering, it doesnt matter to them that Meyer and Lacalli have just pulled the data rug out from under them; they keep snoring away. To our alert readers we ask, notice the significance of what he has just admitted.Simplest Protein a Paradigm of Complexity 07/15/2003 Myoglobin (Mb), the substance that gives muscles their red color, was one of the first proteins studied. Thirty years ago, state Frauenfelder, McMahon and Fenimore in a Commentary in the July 14 Proceedings of the National Academy of Sciences, the textbook function of Mb, storage of dioxygen at the heme iron, was considered to be simple, fully understood, and consequently boring. Since then, the situation has changed: Mb is no longer fully understood. Scientists are finding out that this single-chain (monomeric) protein, folded into an apparently shapeless blob, has multiple functions and these derive from its ability to dynamically change shape: A protein does not exist in a unique conformation but can assume a very large number of somewhat different conformations or conformational substates. ... If a protein had just a single conformation, it could not function and would be dead like a stone.Proteins react to their environment, the pressure and temperature, and also to the atoms in their vicinity. In the case of myoglobin, oxygen and carbon monoxide molecules are able to cause it to open up, as if the drawbridges ... were controlled from the outside of the castle! they state with evident surprise. They conclude that this best-studied protein still sports some fundamental problems for biochemists and biophysicists to solve. What we are learning about its conformational motions during function makes it no longer boring! It symbolizes the beginning of discoveries that will undoubtedly be valid for all proteins. The authors call myoglobin the hydrogen atom of biology, analogous to the detailed model Bohr made of the simplest of atoms when he attempted to begin to understand the basic laws governing all atoms. As such, The large number of substates and their organization and importance for function make Mb a paradigm of complexity. Proteins are not just submicroscopic rocks floating around in the cell. They are like living, moving, breathing entities. They act like flexible robots on factory assembly lines, grabbing and splitting and stuffing and poking and doing all sorts of complex acrobatics. Here one of the simplest proteins is now found to have multiple functions, and the ability to adjust its shape to the function at hand.Grand Canyon Sanitized of un-PC Religion? 07/14/2003
Psalms praising the goodness and wisdom of the Creator are no longer
acceptable at Grand Canyon, reports
Arizona
Central; (see also WorldNetDaily).
The National Park Service has bowed to objections
by the ACLU and will be removing from three South Rim viewpoints
some 30-year-old plaques containing quotations from Psalms.
The quotes are:
Update 07/23/2003: A reader found a link to a news story at AZ Central today that says the Don Murphy, deputy director of Grand Canyon National Park, ordered the plaques reinstalled, pending further legal review and analysis by the agencys attorneys. It doesnt mention what prompted his decision, or how long the analysis would take. The plaques were installed 33 years ago by a Phoenix-based group, the Evangelical Sisterhood of Mary. Political correctness has become bizarrely wacko beyond belief. Just how many of the millions of visitors have ever been offended by these positive, cheerful, exalting, upbeat, artistic, joyful expressions of awe? Get over it, liberals! These verses do not preach who this awesome Creator is. They do not stop anyone from believing what they want about Him, or It, or nothing at all. They are just elegant statements of joy, over 3000 years old, that could stand on their own as great poetry regardless of any religious persuasion. Who but the ACLU could possibly care?Bacterial Flagellum Rotation Speed Depends on Proton Flow 07/11/2003 A bacterial motor responds to the fuel available. Howard Berg of Harvard, one of the worlds authorities on the bacterial flagellum, has established that there is a linear relation between proton motive force (pmf) and rotation speed. In a paper in the Proceedings of the National Academy of Sciences (July 11 online preprints), he says this was known for high speeds, but his present work establishes it for low speeds also. To measure these things, Berg took an E. coli bacterium with two flagella, and attached one to a small latex bead, and the other to a rigid surface. The first one could turn easily, but the other had a heavier load the whole body of the bacterium. Plotting all the numbers, he found a linear relationship between pmf and rotation rate, from stalling speed up to 380 Hz at zero load. The present work shows that a linear relation is true more generally, he said, providing an additional constraint on possible motor mechanisms. He admitted in the discussion section that, It is not yet known how the motor generates torque. Its easy to see why the Intelligent Design Movement has adopted the bacterial flagellum as a de facto mascot. Even secular biochemistry textbooks show it as a complex rotating motor with all the usual motor parts: rotor, stator, propeller, etc. Usually, the textbook is dead silent about how such a complex machine could have evolved. Its what caused Dr. Michael Behe at Lehigh University to ponder, as he saw the diagram in a textbook, Thats an outboard motor! Thats designed; thats no chance assemblage of parts. These extremely efficient, rapidly rotating, true motors found in a simple germ call for a plausible cause. If this were all evolutionists had to explain with their theory, it would be hard enough, but the flagellum is just the tip of a huge iceberg of molecular motors and machines, some even more complex, that work together in living cells.A Planet Out of Place, Out of Time 07/10/2003 A team using the Hubble Space Telescope has indirectly inferred the existence of a planet with a mass 2.5 times that of Jupiter orbiting a white dwarf in an old globular cluster. This is unexpected, because the environment is rough, and it formed long before the ingredients were available. Science Now says, The discovery of a giant planet amid a cluster of primitive stars is challenging one of astronomers fundamental notions about how planets are made. The work suggests that some planetary systems were born billions of years before most astronomers thought the universe had spawned the raw materials needed to make them (emphasis added). They date this planet at just 1 billion years after the big bang, an epoch in which presumably heavy elements had not yet had time to form in large quantities. The parent star, M4, is so depleted in heavy elements, theorists may have to swallow hard and accept the idea that gas giant planets do not need rocky cores. When you get enough observations out of sync with theory (see Maiers Law), its time to question the assumptions.Horizontal Gene Transfer More Widespread than Thought 07/10/2003 A study of plant mitochondrial genomes published in the July 10 issue of Nature found five cases of horizontal gene transfer (HGT) between distantly related plants. This was unexpected, since HGT was thought to be only significant among bacteria and virtually absent from eukaryotes. They feel these discoveries are only the tip of a large iceberg that may cause major rethinking of the role of HGT not only in plants and mitochondrial DNA, but also in animals and in nuclear DNA. Our findings raise many other questions, say the authors, Bergthorsson, Adams, Thomason and Palmer, in Widespread horizontal transfer of mitochondrial genes in flowering plants. This has the potential to scramble phylogenetic trees and imply false relationships among unrelated organisms.Evolution of Jealousy: Biological or Cultural? (Or Neither?) 07/07/2003 The BBC News asks what role evolution had in the phenomenon of jealousy: Psychologists argue about the source of jealousy. Does it have deep-rooted origins in human evolution, or has it been modified by more recent social changes? Anybody ever heard of sin? The question is the either-or fallacy in action. Its like asking a school terrorist, Did you murder your teacher because of low self-esteem or because you ate Twinkies for breakfast? The only two choices they can think of are biological evolution or cultural evolution.Nobel Laureate Prigogine Dies; Brought Physics to Biology 07/05/2003 He proved you can get order out of chaos. He demonstrated that intelligence is not necessary to produce self-organization. He put to rest the arguments of creationists that the second law of thermodynamics precludes the spontaneous origin of life. True? The July 4 issue of Science reports on the recent passing of Ilya Prigogine, the father of non-equilibrium thermodynamics. Unlike the 19th century thermodynamicists who formulated their laws based on equilibrium conditions, Prigogine investigated what happens in open systems far from equilibrium. He demonstrated that unusual things can happen, including the spontaneous formation of order he termed dissipative structures. An example would be the formation of a vortex in a draining bathtub, or crystalline snowflakes as the temperature drops in a turbulent cloud. This led some to claim that since biological systems are far from equilibrium, the spontaneous generation of order is not impossible, even though the second law of thermodynamics demands that all systems (including open systems) eventually must increase in entropy; that is, unavailable energy, decay, and loss of ability to do work. In his eulogy, Radu Balescu (Belgium) explains that the formation of dissipative structures requires an open system and nonlinear equations governing the evolution of the system. Then he remarks, without elaborating, that These conditions arise, in particular, in living systems. Prigogine had thus created an important link between physics, chemistry and biology (even extending it to sociology and economics). Its a dodge that he did not elaborate, because he would have laid himself open to being shot down. Prigogine did important work that certainly merited the Nobel Prize, but he did not invent the free lunch. The second law of thermodynamics applies to living systems just as much as it ever did, and Prigogine never claimed he had found a solution to the spontaneous assemblage of the high degree of order that a living cell would require to emerge from chaos. In fact, he said quite the opposite: Unfortunately this principle cannot explain the formation of biological structures. The kind of order in life is functional information, a different category of order altogether than that in a crystal or vortex. Just as a dissipative structure will never produce a written text or a symphony, it cannot produce a living cell. The defense of this intuitive argument is a technical subject, requiring sufficient background in physics. Those interested are encouraged to read a detailed explanation by Timothy Wallace, with evolutionary rebuttals and the authors counter-rebuttals, on TrueOrigin.org. For the rest of us, dont swallow the claim that Prigogine overcame the thermodynamic argument against evolution; respond that an open system is a necessary, but not sufficient condition for the creation of functional information. Again we recommend Dembskis thorough treatment of the necessity for intelligence in his recent book No Free Lunch. Another good but older book that dealt with this in detail is The Mystery of Lifes Origin by Thaxton, Bradley and Olsen. Answers in Genesis on June 27 posted an interchange between a reader who apparently misunderstands the implications of Prigogines work, and a response by Jonathan Sarfati.Metaphors Bewitch You 07/04/2003 Natural enemies is that a reality, or just a metaphor? Matthew K. Chew and Manfred D. Laubichler in the July 4 issue of Science discuss the usefulness and dangers of metaphors in the language of science. (EurekAlert has a summary of this essay, for those without access to the journal.) Using the recent media frenzy over the invasion of northern snakehead fish in Maryland, they discuss whether this is really a battle between good and evil, or just evolutionary ecology at work. Metaphors, they assert, are ubiquitous in science. They cite the example of William Paleys divine Watchmaker as a metaphor that survives into the intelligent design movement, and the Darwinian phrase survival of the fittest when worded as a tautology, which they feel is a deliberate misrepresentation of evolutionary biology, but alerts us to some problems inherent to the use of metaphors in science. They can be useful or abusive, because Metaphors introduce a fundamental trade off between the generation of novel insights in science and the possibility of dangerous or even deadly misappropriation. An example of the latter is eugenics, when people were labeled with the labels of burden, a cancerous disease, or a foreign body that was a threat to society. They explain the values and dangers of metaphors: Metaphors allow us to build on our experience when we extend familiar relationships to unfamiliar contexts, and help us to communicate new ideas to others who share our experiences and are therefore able to interpret the metaphors. In science, much that we consider knowable is inferred rather than directly observed. As a result, access to adequate metaphors can make the difference between comprehension and confusion. Familiar as they are from common contexts and experiences, most such metaphors can readily be employed to communicate ecology to nonspecialists. But ready recognition also carries a cost. The contexts from which terms are borrowed are not static; the interpretation of specific terms will vary and evolve. Therefore, common metaphors adopted to carry specialized meanings can lead us astray; they can constrain understanding as easily as they facilitate it, and may do both simultaneously.Their essay provides many examples; ecology speaks of predator and prey, but these suggest one is good and the other evil. Metaphors for signalling and machinery are used in cell biology, as well as DNA coding and development. In conclusion, they warn: What troubles us is that biologys metaphorical abstractions all too easily become concrete objects and substitute for specific, describable processes. Maximal diversity becomes evolutions telos instead of its tendency. Biogeographical frontiers become prescriptive and enforceable, rather than descriptive and conceptual. Seasonal "disturbances" such as floods interrupt normal ecological processes, instead of exemplifying them. Biological "productivity" and "diversity" become not only measurable, but virtuous.Though metaphors may be unavoidable, scientists should be aware of their risks, and be wary of using terms like natural enemies, they say, especially in the current historical situation. Whether they mean Iraq or the Intelligent Design Movement is not clear in that last sentence, but either way, this article is thoughtful and well written, despite some weaknesses. We have pointed out in our Baloney Detector the potential fallacies of analogies, explaining that these are can be helpful or misleading, depending on how they are used. They should help illustrate a point, but not prove an argument. Analogies and metaphors can stimulate the mind, but also the emotions. It is fair to use metaphors and analogies, provided the strength of the argument rests on logic and facts, not loaded words. When we find metaphors but not meat in evolutionary arguments, we point it out.The Darwinian Reason for Two-Parent Families 07/03/2003 According to Mark Pagel (University of Reading, UK), writing in the July 3 issue of Nature, this is the reason for a man to stay married to his wife: Far from being the expression of undying mutual commitment and affection heralded by church and state, monogamy, if it even exists, is a sort of evolutionary last resort: it arises only when both partners full efforts are required to raise offspring successfully. Under these circumstances, both partners will be selected to evolve whatever adaptations will improve the offsprings survival. The context is an article about sexual selection, Evolutionary Biology: Polygamy and parenting. He refers to a recent study that found exceptions to the rules about sexual selection in the case of seahorses and pipefish. But the rules dont end there, he claims; they extend all the way up to the us humans: Modern men who think that they can attract women by being good with children may wish to read a study by Wilson and colleagues that has just appeared in the journal Evolution. In seahorses and pipefish at least, females compete for males only when they — the females — have the time to, and not, it seems, according to the effort the males put into looking after offspring. We need a category in addition to dumb called dumb and dangerous. Does anyone fail to see that Darwinian thinking has gone totally wacko? All morality, all decency, all civility, all love must now be cast in Darwinian terms, as strictly utilitarian responses of genes to selection pressures. Men have no conscience. They are the pawns of evolutionary pressures that herd their selfish instincts for polygamy into monogamous relationships only because mystical, invisible forces of sexual selection act on the offspring, not on the individual. But this illogical thinking is based on contradictory evidence, as shown in these papers, that do not fit the expectations of the theory. No matter what evidence is given these materialists, they squeeze it into the Darwinian mindset.Did Earths Atmosphere Survive the Big Wallop? 07/03/2003 The currently most popular theory for the origin of the moon is that a Mars-size object collided with earth at a glancing angle, which threw off material that later coalesced. This event should have melted the earth, and according to H. J. Melosh in the July 3 issue of Nature, Amidst such hostility, it seems hardly possible that the fragile envelope of atmospheric gases could survive. Melosh is encouraged by recent studies that suggest that, contrary to expectations, much of the atmosphere might have remained. This is important, he says: Although no one has yet found a convincing and general explanation for how the terrestrial planets acquired their atmospheres, the present abundances, particularly of Earth's heavy noble gases (neon, argon, xenon and krypton), seem hard to reconcile with a nearly complete loss of atmosphere after the Earth was assembled. The abundances of these gases and their isotopes in the present atmospheres of Earth, Mars and Venus (insofar as we know them) differ substantially from their abundances either in the Sun's atmosphere or in meteorites. These differences have led atmospheric scientists to postulate a wide variety of mechanisms by which such gases may be acquired, partially lost and isotopically fractionated. But the mechanical ejection of gases that was previously imagined for the giant impact is no help at all with this problem: in the impact scenario, the gases are ejected wholesale, without separation or fractionation.(Emphasis added in all quotes.) It is a relief, therefore, if the scientists dont have to figure out how to acquire a new inventory of gases all over again, because it is unclear where such a secondary answer would come from. ... Total atmospheric loss thus adds a major wild card to the already highly uncertain mix of constraints on atmospheric evolution. In the new scenario, not only did earth keep some of its air, but the impactor might have brought more with it. Though encouraging news, Melosh admits, Much remains to be done before we can understand how Earth's atmosphere evolved to its present state. Undoubtedly you have seen the computer animations of this impact hypothesis, but did you think about the air problem? Did you worry about the whole earth melting and what that did to the crust, the core, and the atmosphere? Did you hear Apollo 17 astronaut-geologist Harrison Schmitt arguing against the impact hypothesis last November? Much remains to be done, as usual. Planetary evolution hypotheses are always works in progress against insurmountable obstacles. The little bit of enthusiasm expressed by Melosh is insufficient to cover the seriousness of the problems. He didnt even get into the question of where the Earth got its water.Dark Energy: Who Needs It? 07/02/2003 Just when we were told that the latest surveys of the cosmic background radiation proved that most of the universe consists of dark energy, a group of American physicists say their model doesnt need it, reports Nature Science Update. They explain the universe by tweaking gravity instead. In addition, scientists at UC Irvine now claim that dark matter may exist in the form of hypothetical super-WIMPs that are impossible to discover directly and escape all indirect detection experiments, reports Nature Science Update July 8. Notice what they say about modern cosmology in the first article (emphasis added):Century-Old Puzzle of Antarctic Forests Remains Unresolved 07/02/2003 The ill-fated South Pole expedition of Sir Robert Scott, whose party all perished in the early 1900s, was not a total loss. He produced a profound mystery for science. Found among their belongings were fossils of deciduous trees, indicating that a lush forest had once grown at that currently-frozen location. Similar fossils have been found within the northern Arctic Circle. How did they survive the dark, long winters? One theory was that deciduous trees saved energy by not having to produce carbon when the sun was not shining (though evergreens have also been found). A recent experiment reported in the BBC News, however, in which Dr. Colin Osbourne of Sheffield University tried growing the species in Antarctic conditions, showed that the loss of carbon by leaf dropping vastly outweighed the energy gained. So that has not changed the status of current thinking about this phenomenon, i.e., Exactly how forests managed to flourish at the South Pole has been contentious ever since. Poor Dr. Scott had a tragic demise, but we are glad he brought a mystery to light that has stood the test of time. This again illustrates that one cannot look at the world today and expect to understand it in the past by assuming uniformitarian processes.Von Brauns Brother Dies 07/01/2003 Magnus von Braun, the younger brother of the more famous rocket scientist (our Scientist of the Month), died June 27, reports the Huntsville Times (Huntsville was the site of von Brauns Redstone rocket team that launched America into the space age). Magnus was a rocket scientist in his own right, helping Wernher both at Peenemünde in Germany and also in the United States. He helped shape history by riding his bicycle at the end of World War II in a rush to meet the Americans and help the German rocket team surrender rather than be captured by the Russians. Be sure to read our continuing short biography of Wernher von Braun, a remarkable man and scientist. If any readers met either of the von Brauns, and would like to send in anecdotes, please write here.The Mystery of the Ultra-Pure Sandstones 07/01/2003 R. H. Dott, Jr (Univ. of Wisconsin) has a problem. Hes been trying to explain a geological puzzle for 50 years, and is still baffled. All around the world, sandstones are found that are remarkably pure that seem nonactualistic (jargon for They cant really be there). These pure quartz arenites, as they are called, were considered a major puzzle half a century ago, when Dr. Dott was a student. Some of them extend laterally over vast areas encompassing one or several states, and they cover vast areas of Africa and Arabia, the Great Lakes region, South America, Australia, and more. These sheet sands (as they are nicknamed) are part of a notorious gang: Together with the origin of dolomite, red beds, black shale, and banded iron formation, they made up a group of seemingly intractable geological problems (emphasis added in all quotes). Dott tells autobiographically, Having lived literally upon quartz-rich sandstones for almost 50 years, I have come to regard supermature quartz arenites as natures finest distillatealmost as remarkable as a pure single malt Scotch whiskey. In the July 2003 Journal of Geology, he has written a lengthy paper addressing the mystery of the quartz arenites, and the status of current hypotheses. It amounts to a veritable State of the Century address to sandstone geologists. He explains the puzzle in the Introduction: What is the quartz arenite problem? Foremost is the extreme compositional maturity of sandstones composed of more than 95% quartz. Furthermore, the quartz consists almost exclusively of grains of unstrained, single-crystal units. Very rare lithic [rock] fragments consist only of durable polycrystalline quartz types such as chert or vein quartz. In addition, the extremely rare accessory mineral suite (generally <0.05% by weight) is dominated by durable zircon, tourmaline, ilmenite, and leucoxene. Where present, associated conglomerates also consist only of durable clasts of vein quartz, quartzite, or chert. How can we explain the complete disposal of at least 75% of any ultimate parent igneous or metamorphic rock to yield a residue that is at least 95% quartz sand?Dr. Dott mentions additional puzzles about these formations:
The paradox of the compositional maturation of the sand seems to require some additional factor to reconcile geomorphic conditions that could have enhanced the transport and abrasion of enormous volumes of pure quartz sand, on the one hand, but could have allowed exceptional chemical maturation of soils on the other hand, as indicated by profiles beneath, and the composition of pelitic [mud, clay] strata interstratified within, many quartz arenites. Dott introduces his theory at this point. To solve the paradox, he postulates thin microbial crusts or mats of cyanobacteria formed over the soils, similar to the stromatolites and cryptogamic soils seen forming in some regions today. These might have protected the underlying paleosols while allowing wind transport of sand above. The lack of trees and shrubs might have allowed much more energetic winds. This assumes that the first land invaders were cyanobacteria, although the fossil record has seemed mute on this point. In a sense, these crusts formed a cap that protected the lower strata while the high winds deposited the sand (although he does not propose sources for the sand). He ends with one other paradox; without land plants, unless the landscape were perfectly flat, how could it be stable enough to allow the chemical weathering of both the sand and underlying paleosols? The abundance of medium-grained to coarse-grained sand and associated pebbles required streams with sufficient gradients to transport such materials, which in turn points to at least moderate topographic relief, which exacerbates the stabilization problem, he says. His best guess, in conclusion, is the microbial mat theory; this formed a crust enough to stabilize the landscapes for up to two billion years while these puzzling structures formed. This was an interesting paper about an interesting puzzle that some readers may wish to investigate further. Does his explanation satisfy you? He expects us to assume ad hoc conditions that remained stable for vast ages when continents were presumably splitting apart, volcanos were erupting, mountains were rising, and life was evolving, and in spite of all the commotion, these sandstones have survived to the present day nearly flat and unperturbed over vast regions for vast epochs. Notice how these formations are huge, and exist on every continent. Notice how thick and flat they are. Notice how they are interspersed with clays and soils, yet are exceptionally pure, natures finest distillate. Notice how they give evidence of being deposited via natures most vigorous and energetic forces. Doesnt this sound like global cataclysm? Since catastrophism is back in vogue, should we not follow the evidence where it leads?
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