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The geosynclinal theory is one of the great unifying principles in geology. In many ways its role in geology is similar to that of the theory of evolution, which serves to integrate the many branches of the biological sciences.... Just as the doctrine of evolution is universally accepted among biologists, so also the geosynclinal origin of the major mountain systems is an established principle in geology. | ||||||||||||||||
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Leonard David wrote in Space.Com that Earths moon is still a puzzle luna incognita, he calls it, hoping for a new corps of discovery to go back. Surprisingly, the treasure trove of Apollo data has been sitting around and never properly studied, especially since the development of more highly sophisticated analytical techniques. Carl Pieters (Brown U) has listed some of his questions: Has the enormous lunar south pole Aitken Basin on the Moons farside excavated into the lunar mantle?Even the origin of the moon is an open question, despite the current consensus of the impact model. The article gives space to one maverick who doesnt believe it: Paul Lowman, a planetary geologist at NASAs Goddard Space Flight Center in Greenbelt, Maryland. A lot had to happen very fast. I have trouble grasping that, he said. You have to do too much geologically in such a short time after the Earth and the Moon formed. Frankly, I think the origin of the Moon is still an unsolved problem, contrary to what anybody will tell you, the article quotes Lowman. The moon is becoming a popular target again. The European Space Agency is already there with SMART-1. Missions from Japan, China, India and the United States are planning to fill in the many gaps in our understanding of our nearest celestial neighbor. We do science a disfavor when we think we know the answers or let a consensus lull us into complacency. Question the textbooks; dig through the treasure trove of data, and be willing to think independently.Your Linemen at Work: DNA Search and Rescue Machine Imaged in Action 03/31/2005 DNA is amazing enough, but its automatic error-correction utilities are enough to stagger the imagination. There are dozens of repair mechanisms to shield our genetic code from damage; one of them was portrayed in Nature1 March 31 (see also analysis by Sheila David in the same issue2) in terms that should inspire awe. Imagine a huge encyclopedia written on beads, in strands many miles long. The words of the book are inscribed in letter beads along the strand. Now imagine that, tied to the primary strand, is a twin strand with beads representing the negatives of the primary beads, such that when the strands are separated, exact copies can be made. Every once in awhile, the strands are separated by a machine. Floating beads are attracted to the negative beads, lining up to form exact copies of the book or portions thereof. This is a simplified view of DNA transcription and replication. What happens, however, if the wrong bead, or a defective bead, becomes attached to the negative? For books, that could misspell a word or produce gibberish, but in living organisms, the consequences could be disastrous. Now picture little machines that regularly traverse the string of beads. Because the shapes of the beads differ according to the letters on them, this machine is able to find typos. Lets say that a letter C is always supposed to pair with a letter G on the strand. The proofreading machine feels every bead, and if it finds that particular mismatch, it ejects the incorrect bead so that another correct one can be fastened on by another machine. This is a simplified view of base-excision repair (BER) that actually takes place in your body, all the time. The strands in a cell are, of course, DNA, and the beads are called nucleotides, or bases. Of the four bases in DNA (C, G, A, and T) cytosine or C is always supposed to pair with guanine, G, and adenine, A, is always supposed to pair with thymine, T. The enzyme studied by Banerjee et al. in Nature is one of a host of molecular machines called BER glycosylases; this one is called human oxoG glycosylase repair enzyme (hOGG1), and it is specialized for finding a particular type of error: an oxidized G base (guanine). Oxidation damage can be caused by exposure to ionizing radiation (like sunburn) or free radicals roaming around in the cell nucleus. The normal G becomes oxoG, making it very slightly out of shape. There might be one in a million of these on a DNA strand. While it seems like a minor typo, it can actually cause the translation machinery to insert the wrong amino acid into a protein, with disastrous results, such as colorectal cancer. This little machine has an important job.3 How does it work? The machine latches onto the DNA double helix and works its way down the strand, feeling every base on the way. As it proceeds, it kinks the DNA strand into a sharp angle. It is built to ignore the T and A bases, but whenever it feels a C, it knows there is supposed to be a G attached. The machine has precision contact points for C and G. When the C engages, the base paired to it is flipped up out of the helix into a slot inside the enzyme that is finely crafted to mate with a pure, clean G. If all is well, it flips the G back into the DNA helix and moves on. If the base is an oxoG, however, that base gets flipped into another slot further inside, where powerful forces yank the errant base out of the strand so that other machines can insert the correct one. Now this is all wonderful stuff so far, but as with many things in living cells, the true wonder is in the details. The thermodynamic energy differences between G and oxoG are extremely slight oxoG contains only one extra atom of oxygen and yet this machine is able to discriminate between them to high levels of accuracy. David says, DNA-repair enzymes amaze us with their ability to search through vast tracts of DNA to find subtle anomalies in the structure. The human repair enzyme 8-oxoguanine glycosylase (hOGG1) is particularly impressive in this regard because it efficiently removes 8-oxoguanine (oxoG), a damaged guanine (G) base containing an extra oxygen atom, and ignores undamaged bases (emphasis added in all quotes). The team led by Anirban Banerjee of Harvard, using a clever new stop-action method of imaging, caught this little enzyme in the act of binding to a bad guanine, helping scientists visualize how the machinery works. Some other amazing details are mentioned about this molecular proofreader. It checks every C-G pair, but slips right past the A-T pairs. The enzyme, much like a train that stops only at certain locations, pauses at each C and, better than any railcar conductor inspecting each ticket, flips up the G to validate it. Unless it conforms to the slot perfectly even though G and oxoG differ in their match by only one hydrogen bond it is ejected like a freeloader in a Pullman car and tossed out into the desert. David elaborates: Calculations of differences in free energy indicate that both favourable and unfavourable interactions lead to preferential binding of oxoG over G in the oxoG-recognition pocket, and of G over oxoG in the alternative site. This structure [the image resolved by the scientific team] captures an intermediate that forms in the process of finding oxoG, and illustrates that the damaged base must pass through a series of gates, or checkpoints, within the enzyme; only oxoG satisfies the requirements for admission to the damage-specific pocket, where it will be clipped from the DNA. Other bases (C, A and T) may be rejected outright without extrusion from the helix because hOGG1 scrutinizes both bases in each pair, and only bases opposite a C will be examined more closely.How many linemen does it take to repair your strands? The researchers explain, Only 50,000 molecules of hOGG1 protect the entire 6 x 109 base-pair nuclear genome of a diploid human cell, hence the enzyme must have developed an efficient mechanism for distinguishing oxoG from the four nucleobases in normal DNA. 50,000 repairmen for 6 billion bases: thats one repairman for every 120,000 letters, comparable to a skilled proofreader checking every letter of a 20,000 word document for one specific kind of typo. Then there are all the other proofreaders that look for other kinds of mistakes.4 1Banerjee et al., Structure of a repair enzyme interrogating undamaged DNA elucidates recognition of damaged DNA, Nature 434, 612 - 618 (31 March 2005); doi:10.1038/nature03458. 2Sheila S. David, Structural biology: DNA search and rescue, Nature 434, 569 - 570 (31 March 2005); doi:10.1038/434569a. 3See Life without DNA Repair, in PNAS, 1997. It lists 13 BER enzymes including this one. Studies on mice are described: mutants show various combinations of defective embryogenesis, tissue-specific dysfunction, hypersensitivity to DNA-damaging agents, premature senescence, genetic instability, and elevated cancer rates. 4The authors mention another paralogous enzyme, 3-methyladenine DNA glycosylase (AlkA), which is not as fastidious as hOGG1, because it does occasionally excise adenine residues from undamaged DNA. But there may be reasons for the differences in fidelity; some may have to work under stressful conditions, and repair as much as they can within constraints of time or other factors. JBC Online says that AlkA has a remarkably versatile active site. This reminds us that intelligent design does not mean perfection of every detail, but constrained optimization: achieving the combination of features that produces a sweet spot with best overall performance. The proof of the pudding for DNA repair is in the performance itself: no one watching a race horse, cormorant (05/24/2004) or champion triathlete in action could argue with the assertion that the suite of repair enzymes in living things appears optimized to achieve an extremely high degree of fidelity under a wide range of conditions and stress factors. OK, Darwin Party: checkmate. Natural selection cannot act without accurate replication, yet the protein machinery for the level of accuracy required is itself built by the very genetic code it is designed to protect. Explain that! If the Darwinists cannot provide a plausible mechanism whereby nonliving chemicals, by chance, hit upon a means of replicating information-bearing molecules accurately, there would have been no evolution, because any gains would have been drowned in the errors of subsequent generations.ID in the News 03/30/2005 PBS aired a segment on the anti-Darwinism controversy in the schools Monday (see PBS transcript). Ken Ham and Stephen Meyer presented arguments for criticizing Darwin, while Eugenie Scott and others defended exclusive evolutionary teaching. The Discovery Institute blog Evolution News analyzed the 14:32 minute segment, complaining that 90 minutes of Meyers interview received only 30 seconds of air time. The segment, narrated by Jeffrey Brown, included some clips from the ID film Unlocking the Mystery of Life. The media continue to slant this controversy according to the alt-ctrl-Scopes macro, Rob Crowther of EvolutionNews writes. But no one can deny that the debate is getting more and more attention. Sooner or later, the Darwinists, instead of just assuming their belief that humans had bacteria ancestors, will have to actually come up with some evidence for it.Migration Theory Overturned: Mammals Went Crazy Or Did Darwinists? 03/29/2005 The discovery of an elephant shrew fossil in Wyoming badlands said to be 54 million years old is causing a stir. Elephant shrews were thought to be endemic to Africa, the alleged cradle of mammals. This find hints not only that elephant shrews may have originated in North America instead, but also that there may have been a great deal more interchange in terms of how animals moved around the world as the continents broke up than previously thought, according to EurekAlert. A press release from U of Florida worries that this raises questions about the origin of African mammals. The Stupid Evolution Quote of the Week award goes to Jonathan Bloch of the University of Florida, who explained the theory of adaptive radiation in terms appropriate for a juvenile audience: After the extinction of the dinosaurs 65 million years ago, there was an explosion of diversity, he said. Mammals had a huge celebration with all the big predators gone and they just kind of took over. They went crazy, filling all the open ecological niches they couldnt have exploited while the dinosaurs were still around. Apparently Mr. Bloch had not heard that some mammals had dinosaurs for breakfast (see 01/12/2005 entry). He seems a staunch believer in the if you build it, they will come theory of evolution (see 01/28/2005 commentary), yet doesnt seem alarmed that yet another plank in the evolutionary platform has just been removed. Crazy is in the eye of the beholder.Impressive the Memory Capabilities of Honeybees 03/29/2005 Over the past decade, work on the honey bee has provided growing evidence that insects are not simple, reflexive creatures, begins a paper in PNAS by international scientists.1 The brains of honey bees are very small, but their ability to learn and memorize tasks is impressive. (Emphasis added in all quotes.) With clever experiments, they put test bees through their paces. They found them able to discern between relevant and irrelevant clues when lost, findings that point to a remarkably robust, and yet plastic, working memory in the honey bee. See also the 02/15/2005 entry on honeybee mental mapping capabilities. 1Zhang et al., Visual working memory in decision making by honey bees, Proceedings of the National Academy of Sciences USA, 10.1073/pnas.0501440102, published online before print March 28, 2005. Bee aware: among all their expressions of amazement about the capabilities built into such a tiny insect, the authors made no mention of evolution in their paper. That may sting the Darwinists but create a real buzz elsewhere, honey.Missing Link in Star Formation Found? 03/29/2005 According to a press release from the European Space Agency, a missing link in stellar evolution has been found. Observation: excited molecular hydrogen in two colliding galaxies. Conclusion: a star is born: The scientists noticed that the overlapping region of the two colliding galaxies is very rich in molecular hydrogen, which is in an excited state.The observations were made with ESAs ISO infrared observatory. Although scientists have assumed that colliding galaxies produce shock waves that lead to rapid star formation, So far, however, there was no clear picture of what happens in the time between the collision of two galaxies and the birth of the first new stars. The observation of molecular hydrogen in an excited state is said to the be signature of this stage. Excuse me, but are you not assuming what you need to prove? You said that direct observations of star birth by gas compression are lacking, then assume that gas compression is producing star birth. Thats called begging the question.Descendants Can Overcome Parental Mutations 03/28/2005 Bad genes from both parents may not spell doom in all cases. Scientists at Purdue University found that if two parents have bad mutations, the child can sometimes reconstruct the correct gene from the grandparents. Our genetic training tells us thats just not possible, said Bob Pruitt, co-researcher on the team that ran the experiment repeatedly with the lab plant Arabidopsis. This challenges everything we believe. Some unknown mechanism, perhaps using RNA, is storing a template of the correct sequence that the offspring can use to reconstruct the gene, they suspect. This supplements ordinary Mendelian inheritance with a means of correcting errors.2 About 10% of their experimental offspring were able to inherit the correct gene from the grandparents. Their work was published in Nature last week.1 See also News@Nature that says this report flabbergasts scientists and overturns textbook genetics. The summary on Science Now describes this as an inheritable cache of RNA that can reverse evolution, undoing mutations and restoring a gene to its former glory (emphasis added). One of the researchers said this experiment suggests the existence of a unique genetic memory system that can be invoked at will to reverse harmful mutations. It would seem that the memory would require procedures for comparing the bad gene with the template, excising the bad gene, and inserting the correct one. Whatever this mechanism is, it has been under the radar, says New Scientist, and could exist in animals and even in humans. 1Lolle et al., Genome-wide non-mendelian inheritance of extra-genomic information in Arabidopsis, Nature 434, 505 - 509 (24 March 2005); doi:10.1038/nature03380. 2Mendel had it mostly right (see online biography); this new mechanism adds to our knowledge of inheritance. Trouble in the Darwin Party camp. They were counting on those lucky mutations producing all the glory, not mechanisms to undo mutations to restore a gene to its former glory. This is stasis with a vengeance. We already knew that many genetic errors are corrected in the nucleus or the cell before reproduction occurs; now, another mechanism has come to light that corrects errors after they have left the station, almost like warranty repair service.Easter Essay 03/27/2005 Accompanied by a picture of a cross and a sunset, captioned The Sun and the Son, a somber-looking Brian Walden wrote an essay in the BBC News expressing his reaction to Astronomer Royal Sir Martin Rees chilling comment that It will not be humans who witness the demise of the Sun six billion years hence; it will be entities as different from us as we are from bacteria. Rees stated that the idea of evolution is well-known, but that the vast potential for further evolution isnt yet part of our common culture. Walden delved into the implications of this assumed scientific view of our future for morality, ethics, and religion with a note of nostalgia for his simple childhood faith: This is Easter and I cant help contrasting the Christian promise of my youth with what science expects to happen. This essay had better make every Christian pastor and believer wake up and ponder the deadly effect of evolutionary thinking. Mr. Walden is caught in a tension between what his conscience says and what the Darwin Party soothsayers are telling him. He sees the enormous complexity of an unborn baby revealed by the latest sonograms, and he fears the future of bioethics with no foundation for ethics, but he accepts at face value what Rees says about evolution and the future of the sun billions of years from now. Like a dumb sheep, he fails to question the glittering generalities pronounced by the Babbleonians on the left, the liberals who drove the wedge between science and religion as far back as the 18th century. While realizing that any kind of consensus between the Christians and the liberals would be an alloy of iron and clay, he yet hungers for some kind of dialogue between them at least.Wonders from the Animal World 03/24/2005 Several recent stories prove that animals continue to amaze us with their tricks:
1Poole et al., Animal behaviour: Elephants are capable of vocal learning, Nature 434, 455 - 456 (24 March 2005); doi:10.1038/434455a. 2Huffard et al., Underwater Bipedal Locomotion by Octopuses in Disguise, Science, Vol 307, Issue 5717, 1927 , 25 March 2005, [DOI: 10.1126/science.1109616]. 3Bernd Heinrich, Just for fun? Nature 434, 273 - 274 (17 March 2005); doi:10.1038/434273a. A game that is fun to play is to challenge Darwinists with an amazing capability of an animal and watch them try to explain it. Then, while they tie themselves in knots, we can go play frisbee with the dog, tease the cat with a ball of string, or teach the parakeet to say Charlie is gnarly. Wonder where we can get a recording of that elephant imitating a truck.Soft Tissue from Dinosaurs Found: Intact Cells and Blood Vessels 03/24/2005 The news media are abuzz with exciting reports about the discovery of soft tissues recovered from a Tyrannosaurus rex bone; see CNN, National Geographic, BBC News, MSNBC and News@Nature for examples. The soft tissue, analyzed from a thighbone unearthed in Montana, was reported by a North Carolina team led by Mary Higby Schweizer and was announced in this weeks issue of Science.1 The bone contained remnants of blood vessels that were still soft and flexible when separated from the matrix, and even individual cells: osteocytes with internal cellular contents and intact, supple filipodia that float freely in solution, the authors say. Leading dinosaur paleontologist Jack Horner described the bone as a fantastic specimen. The discoverers also found soft tissues in two other tyrannosaurs and one hadrosaur from the Hell Creek, Montana site. No one seems to be questioning the assumed age of the specimens being 70 million years old, even though the geochemical and environmental factors that could have preserved the tissues are as yet undetermined, and extend to the molecular level: Whether preservation is strictly morphological and the result of some kind of unknown geochemical replacement process or whether it extends to the subcellular and molecular levels is uncertain. However, we have identified protein fragments in extracted bone samples, some of which retain slight antigenicity. These data indicate that exceptional morphological preservation in some dinosaurian specimens may extend to the cellular level or beyond.Erik Stokstad in the same issue of Science2 says that the vessels, still flexible and elastic, are not fossilized. The announcement of intact cells is leading some scientists to think they may be able to extract DNA from them (although recreating Jurassic Park is out of the question). Principal investigator Schweitzer said she was shocked at the find. She didnt believe it till they repeated the extraction process 17 times. As a control, they repeated the same process on extant ostrich bones and recovered soft tissues that were virtually indistinguishable from those of the dinosaur. It is not yet clear whether the original molecules in the tissues and cells were preserved or were replaced by other compounds. Earlier claims of original tissue in other kinds of multi-million-year fossilized organisms turned out to show replacement. Schweitzer told the BBC, however, that It still has places where there are no secondary minerals, and its not any more dense than modern bone; its bone more than anything. As to DNA, Stokstad quotes one expert who said, the likelihood is probably next to none that intact DNA could have survived for 68 million years, even if the bone was protected in stable, dry, subzero conditions all that time. The BBC reporter agrees that the life molecule degrades rapidly over thousand-year timescales, and the chances of a sample surviving from the Cretaceous are not considered seriously. Schweizer is seeking funds to do mass spectrometry on the tissues and find out. 1Schweitzer et al., Soft-Tissue Vessels and Cellular Preservation in Tyrannosaurus rex, Science, Science, Vol 307, Issue 5717, 1952-1955, 25 March 2005, [DOI: 10.1126/science.1108397]. 2Erik Stokstad, Tyrannosaurus rex Soft Tissue Raises Tantalizing Prospects, Science Vol 307, Issue 5717, 1852, 25 March 2005, [DOI: 10.1126/science.307.5717.1852b]. This appears to falsify, in one dramatic swoop, the claim that dinosaurs died out 65 million years ago. Why dont the scientists admit it? Its uncanny how all the reports treat the 70 million figure like an unquestionable fact, despite the clear implications of this discovery. Notice how the BBC treats the date like dogma:NAS President Calls on Scientists to Defend Darwinism 03/24/2005In the hotly contested field of dino research, the work will be greeted with acclaim and disbelief in equal measure.Seems certain to whom? Not to people with their heads screwed on, who have refused to take the oath of loyalty to the Darwin Party, or signed on to the Committee to Protect the Geologic Column at All Costs. Well have to see if the NCSE censors this paper, preventing teachers from showing it to their students, to protect their sensitive minds from anxiety when they compare it with their textbooks. The man who described a cell as a factory that contains an elaborate network of interlocking assembly lines, each of which is composed of a set of large protein machines (see 02/10/2003 entry) now wants his fellow scientists to oppose efforts to attribute this factory to design. Bruce Alberts, president of the National Academy of Sciences and editor of The Molecular Biology of the Cell, gave fellow Academy members a call to arms on evolution, according to USA Today. Alarmed over the gains of the intelligent design movement and the increasing challenges to the teaching of evolution in public schools, Alberts said in a March 4 letter to colleagues, I write to you now because of a growing threat to the teaching of science (emphasis added in all quotes). He claims, one of the foundations of modern science is being neglected or banished outright from science classrooms in many parts of the United States. His letter was motivated in part by a survey by the National Science Teachers Association, showing that a third of teachers feel pressured to either diminish the teaching of evolution or include alternatives to it. One bad habit we need to help the media overcome is the practice of putting ism on creation but not on evolution, but for USA Today, this was a surprisingly balanced article; it consisted largely of a back-and-forth series of charges and responses from both sides. Lets put some of the claims through the Baloney Detector:How to Get Something from Nothing: Genetic Code, Syntax Explained? 03/23/2005 Two articles in recent science literature attempt to show that complex entities, like the genetic code and the syntax of human language, are no big deal. They can emerge from precursors by chance. In PNAS recently,1 veteran researcher Harold J. Morowitz (George Mason U) and two colleagues proposed a new theory for the origin of the genetic code. Todays code, written in DNA, is composed of triplet nucleotide words called codons that match the amino acid words in the language of proteins. Noting some regularities, namely that the first letters of each codon have a strong correlation with the precursor of the amino acid for which it codes, and the second letters determine whether the amino acid is hydrophobic (water-resisting) or hydrophilic (water-attracting), the scientists came up with an idea. Maybe the amino acid precursors (alpha-keto acids) first attached to pairs of DNA bases (dinucleotides) that were floating around in solution. From there, (take a breath): The bases and phosphates of the dinucleotide are proposed to have enhanced the rates of synthetic reactions leading to amino acids in a small-molecule reaction network that preceded the RNA translation apparatus but created an association between amino acids and the first two bases of their codons that was retained when translation emerged later in evolution (emphasis added in all quotes). They point out that their proposal differs substantially from earlier suggestions about the origin of the genetic code: the stereochemical hypothesis that chiral molecules attracted one another, the coevolution hypothesis that small numbers of amino-acid/nucleotide pairs grew gradually, and Francis Cricks old suggestion that the code is a frozen accident. This new hypothesis basically creates a set of amino acids linked to pairs of nucleotides: like proline linked to CC, and glycine linked to CA. It presupposes that the genetic code began in doublet, rather than triplet, form. What happened next? As more amino acids were added to the repertoire, the third nucleotide was needed. The simplest four amino acids require only one reaction step, they say, but problems arise with the construction of amino acids with more complex side chains problems left as uncertainties requiring further research. One hopeful benefit of their model is that it might produce an excess of one hand of the amino acids. A solution to the homochirality problem (see online book) might therefore be at hand: Thus, this model provides a plausible and testable hypothesis for the dominance of L-amino acids, a problem that has challenged prebiotic chemists for decades. All this is a suggestion about the early stages of chemical evolution, before the emergence of macromolecules (proteins and DNA strands). In conclusion, they explain: The emergence of translation was obviously associated with expansion to a triplet code and selective pressures that led to codon assignments using the third position that minimize susceptibility to adverse effects of mutation and errors in translation. Furthermore, translation requires an association of amino acids with their anticodons [i.e., the base-paired RNA negatives of codons on the DNA] not with their codons. There are many ways in which these next steps toward translation might have occurred, and we have not yet examined these possibilities in detail. One intriguing possibility is that amino acids might be removed from their dinucleotide catalysts by transesterification to the 2 hydroxyl of an RNA oligonucleotide. If this oligonucleotide were to recognize the base-pairing surface of the dinucleotide with a complementary sequence, then transesterification would lead to attachment of an amino acid to an RNA containing its anticodon. This would result in an early version of a charged tRNA. Furthermore, the base following the doublet anticodon would be equivalent to the third position of an anticodon in a triplet code in which there was as yet no information content associated with the third position. (Emphasis added in all quotes.)Another something-for-nothing paper on a different subject was proposed in Nature last week.2 Ricard Sole pondered the puzzle of the origin of syntax in language, the so-called communicative Big Bang unique to humans. He was intrigued by a suggestion in a Royal Society paper that a simple word-object association matrix can provide the basis for syntax almost for free. For instance, the words eat and meat overlap with the meaning edible organic matter, even though one is a verb and one is a noun. If all the linked words are arranged in a matrix, they start forming word networks that may have been the beginnings of syntax. Add to that the fact that, according to Zipfs law, the frequency of appearance of a word is proportional to its generality, and a basis for the emergence of syntax can be envisioned: the possibility that early protolanguage might have been ready-made for the development of a full syntax. They admit that this is only a very rough way of associating symbols, but hope that further studies might find this suggestion useful: The study also suggests that Zipfs law could have been a precondition for syntax and symbolic communication. Once such a condition was met, the basis for the combinatorial explosion characteristic of human language was ready for selection to shape it. The new theory will be subject to debate, but the remnants of the communicative Big Bang are evidently hiding somewhere inside modern language networks. 1Copley, Smith and Morowitz, A mechanism for the association of amino acids with their codons and the origin of the genetic code, Proceedings of the National Academy of Sciences USA, published online before print March 11, 2005, doi 10.1073/pnas.0501049102. 2Ricard Sole, Language: Syntax for free? Nature Nature 434, 289 (17 March 2005); doi:10.1038/434289a. We can lump these twoID in the News 03/23/2005: Josh Funk in the Wichita Eagle gave pretty good press to leaders of the intelligent design movement in Kansas. Next headline on: Intelligent Design
Public Not Patronizing Evolution-Based IMAX Films
03/23/2005 What if they threw a Darwin Party and nobody came? The Darwinists must be running scared if their traditional propaganda markets are drying up. They cant force people to buy IMAX tickets, and no amount of big-budget special effects can compensate for distasteful ideas. Nobody desires the suppression of scientifically accurate information, Dr. Leshner; thats what this controversy is all about. The public doesnt like indoctrination into evolutionary just-so stories presented as if they were facts.Mars Crater-Count Dating Is All Wrong 03/22/2005 Planetary scientists have long relied on crater counts to estimate the ages of surfaces in the solar system. The more craters, the older the surface, has been the assumption. Now, according to a report in New Scientist, the method is flawed, at least on Mars. Data from the 2001 Mars Odyssey have shown rays around even small craters, showing that much more material has been ejected from impacts than expected. Consequently, most of the small craters could be secondaries: i.e., fallback from a single larger impact. Massive plumes of ejected rock would have rained down to produce, in some cases, millions of secondary craters, the article states. This makes them virtually useless for dating surfaces, according to Alfred McEwen (U of Arizona). Another said, small craters may not be telling you much. Another comment: This really changes things. Every dating method requires making certain assumptions. Here, a pillar assumption has been toppled, and now they dont know what to think, except that whatever revised date they come up with must fit the Sacred Parameter, the age of the solar system: 4.5 billion years: no questions asked.Echoes of Columbine: Belief in God Brings Bullet 03/21/2005 Grief counselors have been dispatched to Red Lake High School in Minnesota, says Fox News, after a rampage by a neo-Nazi student left 10 dead and 14 wounded. In a manner reminiscent of Columbine, according to MSNBC News, 17-year old killer Jeff Weise admired Hitlers views on racial purity and was deep into goth culture and heavy metal music. During the killing spree he reportedly asked a student named Ryan if he believed in God, then shot him. Native Americans are not typically sympathetic to Nazi ideas. How do you think this troubled young man got his head filled with philosophies of hate? Lets role play what happens next (after, of course, the incident is blamed on the availability of guns, which is already underway, or on poverty, even though many from bad backgrounds turn out to be sterling citizens). Youre a Darwin Party grief counselor assigned to explain this atrocious act to the terrified students and give them advice how to deal with it. What do you tell them? Click here to send in your suggestions.National Geographic Embellishes Human Fossil Data 03/20/2005 Confronting millions of homes around the world is National Geographics latest cover: a wide-eyed, fearful looking small human with black skin, flared ape-like nostrils, bloodshot eyes and disheveled hair all make-believe. What was found are bones of a small human population that inhabited the island of Flores in Indonesia (see 10/27/2004 entry); the soft parts, skin color, nose shape, lips, hair and all the rest were reconstructed by an artist. The April 2005 cover was probably in production before the revelation earlier this month that the hobbit creature dubbed Homo florensiensis had an apparently advanced brain despite its smaller skull size (see 03/04/2005 entry). Inside, the subtitle declares, Diminutive hominins make a big evolutionary point: Humans arent exempt from natural selection (emphasis added). The magazine is not claiming these beings were less than fully human, since true Homo sapiens fossils a hundred times older are represented on the evolutionary timeline. Furthermore, any natural selection acting on this population of humans only reduced their stature, not their complexity or ability to make tools. Nevertheless, the speculative artwork for which the magazine is famous abounds in this issue: a normal-size naked human white male hunting a naked black hobbit female in a cave, a hobbit male confronting a giant Komodo dragon, and naked specimens of the Dmanisi population of Homo erectus (see 08/01/2002 entry) fighting off hyenas from their prey. The in-your-face attitude of National Geographic about evolution, with every claim getting sensational coverage more art than science, may be having a backlash (see 11/29/2002 entry); was this the last salvo by outgoing editor Bill Allen? (See 02/15/2005 entry). We already knew that National Geographic was playing fast and loose with this H. florensiensis fossil (see 12/01/2004 entry); they are perhaps the worst of all the lying reporters (see 11/29/2004 entry) because of their long track record of storytelling with artwork when the data does not justify it. A picture is worth a thousand blurs (see visualization in the Baloney Detector).Horse Evolution Is Back on the Charts 03/18/2005 The old horse-evolution charts from the 1880s have been revised substantially since 1920 when paleontologists began to realize the story was not so simple. (Thomas Huxley had used the series of O. C. Marsh as a focal point of his 1876 lecture tour in the United States.) These charts portrayed small horses with three toes evolving into large horses with one toe. Jonathan Wells wrote in his 2001 book Icons of Evolution that Darwinists have been more forthcoming about the horse series, in trying to set the record straight, more than with any other alleged proof of evolution. This is evident in many museums, like the Natural History Museum in Washington, which instead of showing a straight tree of descent, exhibits more of a branching bush pattern, and points out that the old picture was inaccurate (see 03/02/2001 story). Nevertheless, in Science this week,1 Bruce McFadden (U of Florida), a world export on horse paleontology, entitled his review article, Fossil HorsesEvidence for Evolution. Its not that evolutionists ever denied horses descended from a common ancestor; they just revised the path evolution took. The idea of orthogenesis (straight-line evolution), popular in the late 19th century, has given way to the paradigm that evolution by natural selection takes an undirected, random path. In addition, the fossil evidence for horses has shown that some of the assumed ancestors and descendents were, instead, contemporaries. McFadden wrote the definitive book on horse evolution 13 years ago: Fossil Horses: Systematics, Paleobiology, and Evolution of the Family Equidae (Cambridge Univ. Press, New York, 1992). Has the picture changed at all since Wells listed it among 10 icons of evolution that persist as myths more than proofs? (See summary of argument on ARN.org.) Surprisingly, McFadden labeled his revised phylogenetic tree, Adaptive radiation of a beloved icon (emphasis added in all quotes), and used the phrase again in his conclusion: Fossil horses have held the limelight as evidence for evolution for several reasons. First, the familiar modern Equus is a beloved icon that provides a model for understanding its extinct relatives. Second, horses are represented by a relatively continuous and widespread 55-My [million-year] evolutionary sequence. And third, important fossils continue to be discovered and new techniques developed that advance our knowledge of the Family Equidae. The fossil horse sequence is likely to remain a popular example of a phylogenetic pattern resulting from the evolutionary process.The evolution of which McFadden speaks is not simple variation after all, there is a great deal of size and shape variation among modern horses, from Shetlands to Clydesdales but macroevolution, or higher level (species, genera, and above) evolutionary patterns that occur on time scales ranging from thousands to millions of years. Here, he is convinced, horses remain the definitive case: The speciation, diversification, adaptations, rates of change, trends, and extinction evidenced by fossil horses exemplify macroevolution. To the chart: what picture does McFadden exhibit compared to the old icon? Like Wells, he debunks orthogenesis: The sequence from the Eocene dawn horse eohippus to modern-day Equus has been depicted in innumerable textbooks and natural history museum exhibits. In Marshs time, horse phylogeny was thought to be linear (orthogenetic), implying a teleological destiny for descendant species to progressively improve, culminating in modern-day Equus. Since the early 20th century, however, paleontologists have understood that the pattern of horse evolution is a more complex tree with numerous side branches, some leading to extinct species and others leading to species closely related to Equus. This branched family tree (see the figure) is no longer explained in terms of predestined improvements, but rather in terms of random genomic variations, natural selection, and long-term phenotypic changes.The figure shows most of the fossils being contemporaries of one another in the upper third of the timeline, with grazers and feeders and browsers exhibiting a large diversification in body size scattered among the branches. Only Hyracotherium and Mesohippus occupy the basal position in the tree. Yet Wells pointed out that orthogenesis is still implicit in the new charts, regardless of the side branches, if there is a trunk leading from eohippus to Equus. And he emphasized that both paradigms, straight-line and branching evolution, remain philosophical positions rather than observations. To the bones: what new fossils and revised interpretations of old fossils justify McFaddens assertion that the horse series exemplifies macroevolution? The complexity of the horse evolution picture becomes apparent when he points out that only one genus, Equus survives, while three dozen genera and several hundred species have gone extinct.2 Furthermore, most of the alleged macroevolution occurred in North America, where horses went extinct but survived in the Old World. What evidence has come to light since the branching bush paradigm replaced the old icon? While diversity is evident, macroevolution seems a matter of viewpoint: Although the overall branched pattern of horse phylogeny (see the figure) has remained similar for almost a century, new discoveries and reinterpretation of existing museum fossil horse collections have added to the known diversity of extinct forms. Recent work reveals that Eocene hyracothere horses, previously known as eohippus or Hyracotherium, include an early diversification of a half- dozen genera that existed between 55 and 52 Ma [milli-annum, million years] in North America and Europe. New genera have recently been proposed for the complex middle Miocene radiation, although the validity of these genera is still debated.The truth is in the teeth, he concludes: Horse teeth frequently preserve as fossils and are readily identifiable taxonomically. They serve as objective evidence of the macroevolution of the Equidae. Yet his discussion reveals that, although the teeth of these animals display considerable variety, The tempo of this morphological evolution has sometimes been slow and at other times rapid. The final third of the chart shows groups branching out with teeth designed for grazing and others designed for browsing or feeding on both grasses and leaves. What he terms explosive adaptive diversification in tooth morphology appears to have doubtful justification, since most of the species on the chart overlapped in time. McFadden mentions nothing else in support of horse evolution, but spends a paragraph debunking an old evolutionary myth: Copes Rule. Cope and other early evolutionists seemed to assume bigger is better: ancestors were small, descendents got larger over time; this notion is now known to be incorrect, he says. In his chart, horses got larger at first, but since 20 ma ago, In contrast, from 20 Ma until the present, fossil horses were more diverse in their body sizes. Some clades became larger (like those that gave rise to Equus), others remained relatively static in body size, and others became smaller over time. Nevertheless, as stated earlier, he concludes on the positive note that The fossil horse sequence is likely to remain a popular example of a phylogenetic pattern resulting from the evolutionary process. But is a popular example the same thing as an experts example? 1Bruce McFadden, Fossil Horses--Evidence for Evolution, Science, Vol 307, Issue 5716, 1728-1730 , 18 March 2005, [DOI: 10.1126/science.1105458]. 2It must be recalled that identifying species from fossils is highly subjective, since interfertility cannot be established; todays quarter horses and Belgians might be assigned to different species based on skeletal remains, yet are interfertile. Whats wrong with this picture? The horse evolution icon, like Rasputin, has been shot, stabbed and drowned, but is taking his time to get dead. Here is one of the classic proofs of evolution, explicated by Mr. Horse Evolution himself, and are you convinced? Saying this is proof of evolution doesnt make it so. Better look this gift horse in the mouth.Agnosticism Loses: Arkansas Science Must Be Atheistic 03/18/2005 Updated 05/08/2005: What Im trying to do here is not to deal directly with the existence or non-existence of God, but restore to science the agnostic viewpoint that there could be or could not be rather than the dogmatism that actually currently exists... that absolutely precludes the existence of God. These were the words of Republican state legislator Mark Martin in Arkansas, who introduced a bill in the legislature to allow for inclusion of intelligent design in public high school science classes: specifically, that certain features of the universe and of living things are best explained by an intelligent cause and not by an undirected process such as natural selection. Though favored by a 14-6 majority in the Education Committee, the bill was assigned by the Speaker of the House to the Rules Committee, because he knew he could kill it there, according to Martin, who contacted us with further details. Since the Arkansas legislature is 75% Democrat, the outcome was predictable: After explaining his aims with the legislation, wrote Laura Kellams in the Arkansas Democrat Gazette, no one on the committee made a motion to recommend the bill to the House. Martins proposed bill can be read in PDF format at the Arkansas State Legislature website. Kellams distorted Martins words in her article to emphasize any possible religious motivation behind it, even though the bill explicitly stated that intelligent design theory, Does not claim that science can determine the identity of the intelligent cause, nor does it claim that the intelligent cause must be a divine being or a higher power or an all-powerful force. She wrote:Home to E.T.: You Have Mail 03/17/2005Martin, who is a biomechanical engineer, said hes not sure about the theory of evolution but that theres enough scientific evidence to show that theres a lot of truth to it. I dont consider it in conflict with my strict Christian beliefs, or, quite frankly, my belief in the inerrancy of Scripture, he said. I dont believe that they have to be in conflict. I dont have the answers to that stuff.This selection is a case study in reporter bias. According to MSNBC News, 138,179 people responded to an offer to beam a message into space. Yet another outfit, TalktoAliens.com, the report continues, is offering to broadcast your 900-prefix telephone call into space for $3.99 a minute. Lets hope E.T. has his spam filter on. Hey, Nigeria! Hey, Star Registry! Look at all these suckers waiting for your services.Baloney Detecting Exercise for Students 03/17/2005 Jeff Barbours brief history of everything was published on Universe Today. His essay, entitled Where does intelligent life come from? paints a short but sweeping panorama from the Big Bang to humans. Its style is somewhat like watered-down Carl Sagan or gilded Neil deGrasse Tyson (see 09/29/2004 entry). Heres a sample about the origin of life: Although breeder stars formed within a few hundred million years of the Big Bang, life here on Earth took its time. Our Sun a third generation star of modest mass formed some nine-billion years later. Life-forms developed a little more than one billion years after that. As this occurred, molecules combined to form organic compounds which under suitable conditions joined together as amino acids, proteins, and cells. During all this one layer of complexity was added to another and creatures became ever more perceptive of the world around them. Eventually after more billions of years vision developed. And vision added to an subjective sense of awareness made it possible for the Universe to look back at itself. (Emphasis added in all quotes.)Barbour makes no hint that a Creator might have had anything to do with any stage of this scenario, except for a brief mention in a footnote, surrounded by some strange statements (indicated by [?]): That life develops from less sophisticated to more sophisticated forms is a question beyond scientific dispute. Precisely how this process takes place is an issue of deep division in human society. Astronomers unlike biologists are not required to hold any particular theory on this issue. [?] Whether chance mutation and natural selection drives the process or some unseen hand exists to bring such things about is outside the realm of astronomical inquiry. Astronomers are interested in structures, conditions, and processes in the universe at large. As life becomes more salient to that discussion, astronomy in particular exobiology will have more to say about the matter. [?] But the very fact that astronomers can allow nature to speak on such issues as a sudden and instantaneous creation ex nihilo in the form of a Big Bang shows just how flexible astronomical thinking is in regard to ultimate origins. [?]High schoolers might be offended by the offhand way Barbour makes them seem dumber than bacteria: Consider the high school chemistry lab experiments where hydrogen and oxygen gas are combined, heated then explode. Primitive life forms had to learn to handle this very volatile stuff in a far safer manner putting phosphorus to task in the conversion of ADP to ATP and back again. How said primitive life forms learned how to invent ATP synthase (see 02/23/2005 entry), or any of the other molecular machines in the simplest life forms we know about (see 03/14/2005 and 03/11/2005 entries), he does not explain. Theres nothing new or original here that makes this embarrassing litany of shameless bravado worth mentioning, except as an exercise for young Baloney Detectors who had better get armed against stupidity while young, because theyre going to get a lot of it in public school or on TV. This piece is so lame, so full of deification of Nature and glittering generalities and bluffing, one wonders if Barbour wrote it in mockery of Tyson and the cosmic evolution genre in general. Since he apparently was dead serious, we might as well have some fun with it. It should make your Baloney Detector click like a Geiger counter in Chernobyl. The hard part is trying to figure out which lines would not win Stupid Evolution Quote of the Week. |