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If ID triumphs, science will go onbut some scientists will be interested in different questions. Chemical evolution will probably be abandoned for the same reasons that alchemy was abandoned, and Darwinism will join its cousins Marxism and Freudianism in the dustbin of intellectual history. But deciphering the genetic code will be more interesting than ever. | |||||||||||||||||||
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Rockfish Prefer Oil-Rig Real Estate 06/30/2006
Of course man did not have this in mind when drilling for oil, but it shows that human activity is not always an environmental curse. Were part of the ecology, too, and sometimes our animal friends learn to adapt even profit from our ventures.Paper View: Why SETI Hears Only a Great Silence 06/30/2006 ![]() Enrico Fermi posed a curious question in 1950: Where is everybody? If life emerges on planets as a consequence of evolution, there should be other intelligent civilizations out there, and some of them must have colonized other worlds. He thought there must have been plenty of time for galactic colonizers to achieve technologies far beyond our own by billions of years, and therefore to have reached every corner of the Galaxy by now, including Earth. Where are they? This innocuous question, named Fermis Paradox (though others had asked it, too) has troubled advocates of the Search for Extraterrestrial Intelligence (SETI) ever since. Though SETI technicians patiently eavesdrop on more and more stars each year in the half-century since SETI began, the Great Silence seems ominous. Milan M. Cirkovic and Robert J. Bradbury think they know why. Their ideas, published in New Astronomy July 2006,1 call for nothing less than a complete overhaul of SETI thinking: Hereby, we would like to propose a novel solution, based on the astrophysical properties of our Galactic environment on large scales, as well as some economic and informational aspects of the presumed advanced technological civilizations (henceforth ATCs). In doing so, we will suggest a radically new perspective on the entire SETI endeavor.Traditional SETI, listening for radio signals from biological life, is fundamentally flawed, they claim. Think post-biological. Life will not remain content with the limitations of flesh, they reason. Borrowing from the speculations of science historian Steven J. Dick, they believe biology will eventually give way to technology. Advanced technical civilizations will be composed of machines. They quote Dick: In sorting priorities, I adopt what I term the central principle of cultural evolution, which I refer to as the Intelligence Principle: the maintenance, improvement and perpetuation of knowledge and intelligence is the central driving force of cultural evolution, and that to the extent intelligence can be improved, it will be improved.Not whatever can go wrong, will go wrong, in other words. At least until the universe runs down, the Intelligence Principle will triumph over Murphys Law. This is the foundational principle of their proposal. Life will gravitate toward maximum information processing, subject to the constraints of physical laws. A natural extension of the Intelligence Principle is what can be called the digital perspective on astrobiology: After a particular threshold complexity is reached, the relevant relations between existent entities are characterized by requirements of computation and information processing. It is related to the emergent computational concepts not only in biology, but in other fields such as fundamental physics, cosmology, neuroscience, and social sciences.Heres a brief synopsis of their scenario. Life emerges on a planet, evolves to a state of intelligence, then gravitates toward more efficient information processing and computation, till it transcends the biological and becomes strictly technological. A machine civilization is not going to care about communicating with beings like us. Its priority will be to maximize information processing. To do this, the entities will have to have to migrate from the places where they first evolved as biological life forms. This is due to simple constraints of physics. The warmth of a summer sun may be valuable to biological organisms like us, but heat is an enemy of computation. Galaxies have a galactic temperature gradient: hot at the center, cooler at the edges. Its at the outskirts of the galaxy, therefore, where a machine civilization would migrate. That, however, is not where traditional SETI is looking, and that is the reason for the Great Silence. In their scenario, we need to drastically modify our search strategy. Whether artifacts of technology would be detectable at the edges of the Milky Way or external galaxies, they are not sure. Perhaps aliens would send inscriptions (see 09/01/2004). They are quite certain, though, that radio is not on the broadcast schedule: We conclude that the conventional radio SETI assuming beamed broadcasts from targets selected exclusively on the basis of the old-fashioned biological paradigm within the vicinity of our Solar System ... is ill-founded and has minuscule chances of success on the present hypothesis. It is a clear and testable prediction of the present hypothesis that the undergoing SETI experiments using this conservative approach will yield only negative results.(Italics theirs.) How can their prediction indeed be tested? If conventional SETI does get a radio signal, the prediction might fail; otherwise, how long would they have to wait in silence to feel vindicated? Traditional SETI researchers would probably argue this point. But Cirkovic and Bradley also put forth a falsification test: look for evidence of technological artifacts at the outer fringes of nearby galaxies. That, unfortunately, will probably be very difficult without more advanced technology. Nonetheless, they are quite adamant that traditional SETI thinking is parochial. Its oblivious to the physical constraints that would drive life toward information processing. In a sense the problem has nothing to do with the universe itself, and everything to do with our ignorance and prejudices, they state accusingly. In this special sense, the flaws in the currently prevailing views on SETI are much less excusable. In their paper, the authors acknowledged the contribution of Guillermo Gonzalez (along with Peter Ward and Donald Brownlee) to the extension of ideas about planetary habitable zones to galactic scales: the Galactic Habitable Zone (GHZ).2 They extended this concept further to a Galactic Technological Zone (GTZ), where machines could optimize their computational power. This zone would be the outer reaches of a spiral galaxy but not so far out that heavy elements would be lacking. They were also honest about their assumptions: There is no meaningful scientific hypothesis for resolving Fermis Paradox or, indeed, any problem of importance in science without a set of assumptions. In building of the migrational solution to Fermis puzzle, we have relied on the following set of assumptions:The most speculative assumption was #8, they acknowledged, but they reasoned this way: whether a civilization evolves toward hedonism (like the Romans) or toward accomplishment (like the Greeks), both would need to maximize their information processing. In either situation, they rationalized, they will seek the greatest computational capacity and efficiency possible to support these activities. So there you have it. The drive toward the ultimate CPU governs the fate of life and intelligence. Geeks will someday rule the universe. 1Milan M. Cirkovic and Robert J. Bradbury, Galactic gradients, postbiological evolution and the apparent failure of SETI, New Astronomy, Volume 11, Issue 8, July 2006, Pages 628-639, doi:10.1016/j.newast.2006.04.003. 2See also the film The Privileged Planet. In this film Gonzales discusses the GHZ, and Brownlee gives reasons for his rare earth hypothesis. The film also argues against the assumed Copernican Principle. Interesting paper. Heavily sci-fi, profoundly speculative, politically incorrect, and somewhat amusing, perhaps, but thought-provoking. Is it scientific? Does its presence in a scientific journal indicate it is worthy of more serious consideration by rational truth-seekers than if it appeared in a theological journal or in Mad Magazine? After all, they made predictions and provided a falsification criterion. They talked about baryons and physical laws and thermodynamics. And look they even had equations! Surely no one could accuse this kind of sober, rigorous analysis as being equivalent to religion. What do you think?Ant Pedometer Discovered 06/29/2006 ![]() Ants have dumbfounded scientists again. It appears they count their steps when they walk, and keep track how far they have gone. Reporting in Science,1 a trio of German and Swiss scientists tested desert ants by making some walk on specially-designed stilts and others walk on stumps of cut-off legs. The first overshot their target, and the second group undershot it by the amount proportional to the change in leg length. Another amazing fact is that the ants can use their mental pedometers to reckon how far they are from home, then take a direct route back. That would seem to require mathematical skill beyond just counting steps. Indeed it does; not only do the ants have a sophisticated onboard navigation system, but also celestial navigation equipment. The team explained, Foraging Saharan desert ants, Cataglyphis fortis, use a mode of dead reckoning known as path integration to monitor their current position relative to the nest and to find their way home. This enables them to return on a direct route, rather than retracing the tortuous outbound journey performed when searching for food items in their flat desert habitat, which is often completely devoid of landmarks. The path integrator requires two kinds of input information: about directions steered, as obtained via the ants celestial compass, and about distance traveled, as gauged by the ants odometer.See also Live Science, National Geographic and New Scientist. The team also found that the ants could learn to adapt to their new circumstances. Regarding the surgical procedures used in the experiment, the scientists were quick to explain that ants dont feel pain at having their legs amputated. 1Wittlinger, Wehner and Wolf, The Ant Odometer: Stepping on Stilts and Stumps, Science, 30 June 2006: Vol. 312. no. 5782, pp. 1965 - 1967, DOI: 10.1126/science.1126912. There was no mention of evolution in this paper. Only in evolutionary theory would someone attempt to say, with a straight face, that celestial compasses, path integrators and odometers are the result of a blind process lacking a navigation target.Doubters Defy Darwin Dogma 06/29/2006 ![]() One would think that the near unanimous opinion of international scientific societies opposing creationism and ID would carry a lot of weight with the public, but it doesnt. There are indications that a substantial percent of the population is not impressed with the dogmatic pronouncements that evolution is a fact, and that anyone who disagrees is a religious nut (see also 04/21/2006). This seems to be frustrating the daylights out of evolutionists who seem unable to do anything about it. Some samples:
To me, the struggle in the late 20th Century between creationists and evolutionists does not represent another battle between science and religion because rarely do creationists display hostility towards science. If you read their literature, youll rarely come across an anti-scientific notion. They love science. They love what science can do. They hate the fact that science has been hijacked by agnostics and atheists to offer such speculative theories as organic evolution. So, they dont see themselves as being antagonistic to science any more than many of the advocates of evolution those who see evolution as Gods method of creation view themselves as hostile to Christianity.Thats a remarkable admission for someone who had recently signed on with Elliot Sober and other staunch anticreationists in a call to action against intelligent design.1 1Attie, Sober, Numbers et al., Defending science education against intelligent design: a call to action, Journal of Clinical Investigation, 116:1134-1138 (2006). doi:10.1172/JCI28449. We hope you see that CEH also loves science. When you compare who wants rational discussion about these important issues and who wants to browbeat their listeners into submission, the choice is clear.The Evolution of Immaturity 06/28/2006 ![]() [Guest Article] Blame evolution for your teens immaturity. The Discovery Channel has published a review of an upcoming paper by Bruce Charlton, professor of biology at the University of Newcastle upon Tyne, England. Charlton is a promoter of Evolutionary Psychology, a developing field of Psychology that attempts to explain all human characteristics in light of their evolutionary history. In this paper, Charlton focuses on the observation that in the last fifty years, people have matured later, and in fact, many have not matured completely: Specifically, it seems a growing number of people are retaining the behaviors and attitudes associated with youth. As a consequence, many older people simply never achieve mental adulthood, according to a leading expert on evolutionary psychiatry. Among scientists, the phenomenon is called psychological neoteny.Charlton attributes the current trend to our modern environment, in comparison to our hunter/gatherer ancestors: ...While the human mind responds to new information over the course of any individuals lifetime, Charlton argues that past physical environments were more stable and allowed for a state of psychological maturity. In hunter-gatherer societies, that maturity was probably achieved during a persons late teens or early twenties, he said.Charlton attributes the failure to mature to the pressure of the educational system, which keeps people in school, at submissive positions, far beyond the time when they should have been developing their assertive personalities. The result is adults that display immature characteristics: By contrast, many modern adults fail to attain this maturity, and such failure is common and indeed characteristic of highly educated and, on the whole, effective and socially valuable people, he said. People such as academics, teachers, scientists and many other professionals are often strikingly immature outside of their strictly specialist competence in the sense of being unpredictable, unbalanced in priorities, and tending to overreact. Charlton added that since modern cultures now favor cognitive flexibility, immature people tend to thrive and succeed, and have set the tone not only for contemporary life, but also for the future, when it is possible our genes may even change as a result of the psychological shift. The faults of youth are retained along with the virtues, he believes. These include short attention span, sensation and novelty-seeking, short cycles of arbitrary fashion and a sense of cultural shallowness.Charlton predicts that based on evolutionary selection, this will become a dominant genetic characteristic over time: Charlton added that since modern cultures now favor cognitive flexibility, immature people tend to thrive and succeed, and have set the tone not only for contemporary life, but also for the future, when it is possible our genes may even change as a result of the psychological shift. The obvious next question one should ask is if this immaturity has not already become apparent in the departments of Evolutionary Psychology.Stem Cells Protect Against Defective Copies 06/27/2006 ![]() The Pasteur Institute (see Louis Pasteur) has found evidence supporting a controversial theory known as the immortal DNA theory. According to News-Medical.Net, researchers at the institute believe that stem cells keep the best copies and allow only defective ones to differentiate and specialize. If so, this may be another mechanism for minimizing the effects of mutations. The lead scientist said, this is an exciting finding, as it seems to defy one of the basic rules of cell biology and genetics: that genetic material is distributed randomly. It appears that the cellular machinery distinguishes old from new when it comes to DNA, and it may use this distinction to protect the body from mutations and cancer. It is also possible that this mechanism is used to silence gene expression in the stem cell.According to the press release, the research was published in Nature Cell Biology. Oh no, this is bad news for us Darwinians. We need those mutations to advance the tree of life. If the ID people get hold of this, it will give them another hammer to beat us with. Lets pre-empt it with a good just-so story. Can somebody come up with one? Anyone?Evolutionists Find Pegasus in the Gene Epic 06/26/2006 ![]() When you conjure with genes, you never know what might appear. Japanese scientists, publishing in PNAS,1 tried to find evolution in mammalian retroposons and found an unexpected relationship. New Scientist explains: You could call it a batty idea, but bats seem to be more closely related to horses than cows are. Despite the recent large-scale efforts dedicated to comprehensive phylogenetic analyses using mitochondrial and nuclear DNA sequences, the trio said, several relationships among mammalian orders remain controversial. They compared mammalian orders using L1 retroposons, and thats when the unexpected affinity between bats and horses jumped out. They even suggested a new name for the super-order that contains the two: Pegasoferae. 1Nishihara, Hasegawa and Okada, Pegasoferae, an unexpected mammalian clade revealed by tracking ancient retroposon insertions, Proceedings of the National Academy of Sciences, published online before print June 19, 2006, 10.1073/pnas.0603797103. What a great subplot to add to endless tale. There must have been some truth to the old Greek myths after all. Centaurs cannot be far behind.Plants Use Electrical Sunscreen 06/23/2006 ![]() Perhaps only a scientist, or a kid, would worry about how a plant doesnt get sunburn, but it took elaborate scientific work for six months to find the answer. EurekAlert told about research at the Biodesign Institute at Arizona State that found how plants get rid of excess solar energy. They use carotenoids, molecules responsible for the yellow color of fruits and vegetables, like electrical wires to convey excess electrons safely away from their light-harvesting machines: Carotenoids act as wires to carry away the extra sunlight energy in the form of unwanted electrons, somehow wicking away the extra electrons across long distances from locations that could damage plant tissues and photosynthesis. Its no wonder these wires were not found earlier. They are a miniscule 2.8 nanometers long and less than a single nanometer thick, or about 10,000 times smaller than the width of a human hair. Carotenoids are not particularly conductive, but exceed the specifications required by the plant. The surprise was that these molecules are able to shuttle the electrons across their surfaces without becoming oxidized themselves. The new work sheds light on the process of photoprotection, an intricate internal defense mechanism, ... which acts like sunscreen to ward off the suns harmful rays. See also our 01/24/2005 entry on photoprotection, one of Natures supreme examples of nanoscale engineering. Do a word search in this article for anything about evolution. We got word not found. The research was not motivated by or benefited by evolutionary speculation. The scientists just wanted to more fully understand how photosynthesis works. Students use similar motivation in auto shop without assuming car engines evolved from rocks.Science Reporters Spin Spider Web Data Into Evolutionary Program 06/23/2006 ![]() A spider was found perfectly preserved in amber (fossil tree sap), complete with its web and prey. It is identical to modern spiders. Isnt evolution amazing? If you just experienced a software crash, there must be something wrong with your BIOS. All the news media ran that program just fine. A patch is available at Darwins website, but compatibility is not guaranteed on all platforms. Now, the data input: scientists in Spain reported in Science1 finding a piece of amber with the oldest-known evidence of a web-spinning spider. They remarked, This elegant, geometric structure is woven with silk fibers that are renowned for their superior mechanical properties. It was dated as early Cretaceous (110 million years old), making it the oldest known fossil of a spider apparently able to spin an orb web. Erik Stokstad in the same issue of Science2 mentioned another find this month by another team of a true orb spinner, also encased in Spanish amber, dated at 115 million years old (see BBC News). Stokstad commented that it is remarkably similar to a living spider--showing that the basic, and successful, body plan appeared long ago. One other piece of data provided input for the media-spinning program about this original worldwide web as Stokstad whimsically dubbed it. A second team, also writing in Science,3 studied the genetics of spider web silks. They replayed the exact same opening lines: The orb web is a spectacular evolutionary innovation that enables spiders to catch flying prey, they said, This elegant, geometric structure is woven with silk fibers that are renowned for their superior mechanical properties. Their goal was to resolve a controversy about two groups of orb-spinners, the deinopoids and the araneoids. Did their web skills evolve from a common ancestor, or independently, as a spectacular example of convergent evolution? This had been an ongoing debate, because the two groups of spiders, while producing similar-looking webs, use different spinnerets, silk types and methods of construction. The phylogenetic analysis of web-spinning genes by Garb et al. supported the one-origin theory: Contrary to the view that the orb-web design evolved multiple times, we found that the distribution and phylogeny of silk proteins support a single, ancient origin of the orb web at least 136 million years ago. While this removes the puzzle of convergent evolution, it pushes back the origin of this complex trait earlier than previously thought. Their conclusion was based on comparison of silk-producing genes from living representatives of the two groups, but did not include a theory of how the structural and behavioral differences might have evolved. Now that you have the data input, look at how the popular media reported the story:
What was observed were modern-looking spiders encased in amber with full web-spinning capabilities. The phylogenetic study, on the other hand suggests that the great great ancestors of modern spiders were weaving webs as long ago as 136 million years ago. 1Peñalver, Grimaldi and Delciòs, Early Cretaceous Spider Web with Its Prey, Science, 23 June 2006: Vol. 312. no. 5781, p. 1761, DOI: 10.1126/science.1126628. 2Erik Stokstad, Spider Genes and Fossils Spin Tales of the Original Worldwide Web, Science, 23 June 2006: Vol. 312. no. 5781, p. 1730, DOI: 10.1126/science.312.5781.1730a. 3Garb et al., Silk Genes Support the Single Origin of Orb Webs, Science, 23 June 2006: Vol. 312. no. 5781, p. 1762, DOI: 10.1126/science.1127946. We know our readers are more perceptive than the average dupe of mainstream science reporters. Were wondering if anyone saw any evolution sneak by through all this advanced, elegant, geometric structure evidenced by these modern-looking spiders and their modern-looking prey. What? You havent installed the software patch yet? No wonder. Just skip the EULA* and go for it.Rubisco Highly Tuned for Fixing Atmospheric Carbon 06/22/2006 ![]() Rubisco sounds like a brand of cracker or something, but its actually an air cleaner your life depends on. Its an enzyme that fixes atmospheric carbon for use by photosynthetic microbes and plants. In doing so, it sweeps the planet of excess carbon dioxide the greenhouse gas implicated in discussions of global warming making it a politically important molecule as well the most economically important enzyme on earth. Rubisco is the most common enzyme in the world, too; every person on earth benefits from his or her own 12 to 25 pounds of these molecular machines, which process 15% of the total pool of atmospheric carbon per year. For a long time, biochemists thought this enzyme was slow and inefficient. That view is changing. Rubisco now appears to be perfectly optimized for its job. Rubiscos cute name is a handy anagram for the clumsier appellation ribulose bisphosphate carboxylase. Tcherkez et al. first broke the paradigmatic logjam about this enzymes purported inefficiency with an article in PNAS,1 titled, Despite slow catalysis and confused substrate specificity, all ribulose bisphosphate carboxylases may be nearly perfectly optimized. Howard Griffiths commented this week in Nature2 about this paper and the new findings about its optimization. Though his article referred to evolution seven times, and only mentioned design twice, the latter word seemed the most valuable player. There are four classes of Rubisco, some more efficient at fixing carbon than others. Its reputation as a slow enzyme (2-8 catalytic events per second) may be unfair. Carbon dioxide in gaseous form has to compete for access to the active site against the much more abundant and lighter oxygen. Griffiths shows what a difficult job this molecule has to perform; no wonder it leaks somewhat. But, as he explains, even the leaks are accommodated: It is curious that Rubisco should fix CO2 at all, as there is 25 times more O2 than CO2 in solution at 25°C, and a 500-fold difference between them in gaseous form. Yet only 25% of reactions are oxygenase events at this temperature, and carbon intermediates lost to the carbon fixation reactions by oxygenase action are metabolized and partly recovered by the so-called photorespiratory pathway. Catalysis begins with activation of Rubisco by the enzyme Rubisco activase, when first CO2 and then a magnesium ion bind to the active site. The substrate, ribulose bisphosphate, then reacts with these to form an enediol intermediate, which engages with either another CO2 or an O2 molecule, either of which must diffuse down a solvent channel to reach the active site.This is a harder job than designing a funnel that will pass only tennis balls, when there are 500 times more ping-pong balls trying to get through. Not only is Rubisco good at getting the best mileage from a sloppy process, it may actually turn the inefficiency to advantage. Griffiths started by claiming, evolution has made the best of a bad job, but ended by saying that the enzymes reputation as intransigent and inefficient is a lie. Why? It now appears that Rubisco is well adapted to substrate availability in contrasting habitats. This means its inefficiency is really disguised adaptability. Experimenters thought they could improve on Rubisco by mutating it. They found that their slight alterations to the reactivity of the enediol intermediate drastically favored the less-desirable oxygenase reaction. This only served to underscore the contortions the molecule must undergo to optimize the carboxylase reaction: Such observations provided the key to the idea that in the active site the enediol must be contorted to allow CO2 to attack more readily despite the availability of O2 molecules. The more the enediol mimics the carboxylate end-product, Tcherkez et al. conclude, the more difficult it is for the enzyme to free the intermediate from the active site when the reaction is completed. When the specificity factor and selectivity for CO2 are high, the impact on associated kinetic properties is greatest: kcat [i.e., the rate of enzyme catalytic events per second] becomes slower.Another finding about the inner workings of Rubisco bears on dating methods and climate models. Scientists have known that Rubisco favors the lighter, faster-moving carbon isotope 12C over 13C. By measuring the ratio of these stable isotopes in organic deposits, paleoclimatologists have inferred global carbon dioxide abundances and temperatures (knowing that Rubisco processes the isotopes differently). That assumption may be dubious: Several other correlates are also explained by this relationship. For instance, Rubisco discriminates more against 13C than against 12C, the two naturally occurring stable isotopes in CO2. But when the specificity factor is high, the 13C reaction intermediate binds more tightly, and so carbon isotope discrimination is higher (that is, less 13C is incorporated); in consequence, the carbon-isotope signals used to reconstruct past climates should perhaps now be re-examined. In contrast, higher ambient temperatures (30-40 °C) reduce the stability of the enediol, and Rubisco oxygenase activity and photorespiration rate increase.Those considerations aside, Griffiths is most interested in two things: how this enzyme evolved, and whether we can improve on it. If we can raise its carboxylation efficiency, we might be able to increase crop yields. So far, genetic engineers have not succeeded.3 As for the evolution of Rubisco, he mentions three oddball cases but fails to explain exactly how they became optimized for their particular circumstances only that they are optimized. Yet their abilities seem rather remarkable. For instance, though the least efficient forms of Rubisco reside in microbes living in anaerobic sediments, where oxygen competition is not a problem, One bacterium can express all three catalytically active forms (I, II and III), and switches between them depending on environmental conditions. In another real-world case, some higher plants and photosynthetic microorganisms have developed mechanisms to suppress oxygenase activity: CO2-concentrating mechanisms are induced either biophysically or biochemically. In another example, Rubisco has not been characterized in the so-called CAM plants, which use a form of photosynthesis (crassulacean acid metabolism) adapted for arid conditions. These plants, including cacti and several unrelated species scattered throughout the plant kingdom, have other mechanisms for dealing with their extreme environments. In every mention of evolution, therefore, Griffiths assumed it rather than explaining it: viz., The systematic evolution of enzyme kinetic properties seems to have occurred in Rubisco from different organisms, suggesting that Rubisco is well adapted to substrate availability in contrasting habitats. So, can we improve on it? If so, given all the praise for what evolution accomplished, Griffiths seems oblivious to the implications of his own concluding sentence: Other research avenues include manipulating the various components of Rubisco and cell-specific targeting of chimaeric Rubiscos. Potential pitfalls here are that the modified Rubisco would not only have to be incorporated and assembled by crop plants, but any improved performance would have to be retained by the plants. Finally, one suggestion is that we should engineer plants that can express two types of Rubisco each with kinetic properties to take advantage of the degree of shading within a crop canopy. Such rational design would not only offer practical opportunities for the future, but also finally give the lie to the idea that Rubisco is intransigent and inefficient.What, students, is a synonym for rational design? 1Tcherkez et al., Despite slow catalysis and confused substrate specificity, all ribulose bisphosphate carboxylases may be nearly perfectly optimized, Proceedings of the National Academy of Sciences USA, published online before print April 26, 2006, 10.1073/pnas.0600605103 PNAS | May 9, 2006 | vol. 103 | no. 19 | 7246-7251. 2Howard Griffiths, Plant biology: Designs on Rubisco, Nature 441, 940-941 (22 June 2006) | doi:10.1038/441940a; Published online 21 June 2006. 3If and when they do, the benefit would be tuned for humans and their livestock, not necessarily for the ecology or atmosphere. Folks, here you have it again. What Griffiths meant as a paper praising evolution is really a paper demonstrating intelligent design. We dare any evolutionist to explain how this highly-tuned enzyme, with the optimized contortions of its intermediates and its highly conserved (i.e., unevolved) active site, arose by an unguided process, especially how a lowly bacterium the simplest of organisms evolved three forms of it and can switch between them depending on environmental conditions! And dont say it evolved because evolution is a fact.The World Against I.D. 06/21/2006 ![]() The Inter-Academy Panel (IAP) on International Issues, a global network of scientific academies, has issued a statement endorsing cosmic and biological evolution. It urges decision makers, teachers, and parents to educate all children about the methods and discoveries of science and to foster an understanding of the science of nature. Though the statement does not specifically mention intelligent design or creation, a report on BBC News says its release follows fierce debate about whether so-called intelligent design (ID) should be taught in biology courses in schools, mainly in the US. It opens with this veiled reference to opposition: We, the undersigned Academies of Sciences, have learned that in various parts of the world, within science courses taught in certain public systems of education, scientific evidence, data, and testable theories about the origins and evolution of life on Earth are being concealed, denied, or confused with theories not testable by science. The document lists 68 member societies, including the US National Academy of Sciences. Next, it calls for evidence-based teaching about at least four subjects that, while having details still open to question, scientific evidence has never contradicted (1) The Earth formed 4.5 billion years ago in a universe 11-15 billion years old, (2) Earths geology and environments have continued to change since its formation, (3) Life appeared at least 2.5 billion years ago, followed by the evolution of photosynthetic organisms which transformed the atmosphere, and 4. Since its first appearance on Earth, life has taken many forms, all of which continue to evolve, in ways which palaeontology and the modern biological and biochemical sciences are describing and independently confirming with increasing precision. Commonalities in the structure of the genetic code of all organisms living today, including humans, clearly indicate their common primordial origin.The statement affirms a view of science based on observation, formulation of testable hypotheses leading to theories, and prediction. It says science is an open-ended process subject to correction and expansion, and that questions of value and purpose are outside its scope. The BBC has made the full text available. One can imagine that in the time of the Reformation, every Catholic academy across the Latin world would have unanimously risen up to condemn Luther. The list of signatories would have been impressive. It must have been a fearful moment for Luther to stand alone against the tidal wave of illustrious scholars and officials arrayed against him, and say, Here I stand. I can do no other. God help me.Media Becoming Ambivalent on How to Spin Evolution 06/20/2006 ![]() Anti-evolutionists remain the whipping boys of science, but some reporters, at least, seem to be waffling on the effectiveness of the torture. For others, the heat of the battle is apparently wearing them down. Some even seem to be entertaining treasonous thoughts that the Darwinists are unable or unwilling to provide the promised reinforcements.
1Richard Harris, A chimp off the old block, Current Biology, Volume 16, Issue 12, June 2006, pages R435-R436. Readers can propose their own explanations for the lack of outrage against Coulters irreverence for Father Charlie (which only intensifies after her opening paragraph). Either this book is completely off their radar screen (though a New York Times best-seller and the talk of the talk shows the week of June 12); or, they dont want to dignify the views of an articulate woman they probably wish to characterize as a dumb blonde; or, they have no answers to her hard-hitting accusations. It does seem strange to see no response at all from the Darwin Party against a high-profile columnist whose books are flying off the shelves. It wasnt long ago that any criticism of Darwin met swift and strident censure. (Buy the real book, by the way, not the awful things liberals are saying about it.)A.P. Learning to Report Science Wars More Accurately 06/19/2006 ![]() The Discovery Institutes media-watchdog blog Evolution News watched Associated Press fumble at first, but then get it right to show that new science standards adopted by South Carolina do not mandate teaching intelligent design. The AP story printed in South Carolinas Channel 10 News included a comment that certain officials worried the change would open the door to teaching alternative theories such as intelligent design. It also first contradicted itself about what the standards said about teaching critical thinking. To clarify what the standards said and did not say, Casey Luskin listed five points on Evolution News why critical analysis of evolution does not require teaching ID. Another critical analysis debate is going on in Michigan. Evolution News reported that microbiologist Ralph Seelke testified in favor of HB 5251 that calls for students to be able to use the scientific method to critically evaluate scientific theories including, but not limited to, the theories of global warming and evolution, and to be able to formulate arguments for and against such theories. Seelke argued this is a sound strategy for teaching any subject about which there is considerable disagreement. There is a term used when we only want student[s] to learn one side of a story, he said. It is called indoctrination, not education. With polls continuing to show a majority doubt evolution, and with more school boards showing boldness enough to stand up against ACLU and Americans United threats, and with the inherent and obvious reasonableness of allowing controversial subjects to get a critical analysis, the AP and other mainstream media may be slowly catching onto the fact that they cannot continue to lie and sell papers. Keep those well-written and soundly-argued letters to the editor flowing.Cambrian Explosion Precursors, or Drops in the Bucket? 06/18/2006 ![]() Two recent presentations, one in person and one in print, tried to fill in the gap of fossils that led to the explosion of diversity in the Cambrian, known as the Cambrian Explosion (see 04/23/2006 entry).
1Jun-Yuan Chen et al., Phosphatized Polar Lobe-Forming Embryos from the Precambrian of Southwest China, Science 312, 16 June 2006: 1644-1646. 2Katherine Unger, Fossil Embryos Hint at Early Start for Complex Development, Science 312, 16 June 2006: 1587. The Schopf talk was egregious for claiming Darwin has been vindicated. For one thing, he gave no clue how microbes exploded into a plethora of complex body plans in the Cambrian. For another, he guaranteed he cannot see evidence against evolution! One of his criteria was, Does it fit with evolution? This means that no matter what is found, if it doesnt fit with evolution, it must be mistaken. Darwin in, Darwin out.How Can They Call This Duck a Missing Link? 06/16/2006 ![]() The news media are abuzz with the phrase Missing Link again. This time, its about a fossilized duck or loon found in Early Cretaceous strata in China, announced in Science.1 The article calls it a nearly modern bird with soft-tissue preservation, including webbed feet, wing feathers and downy feathers. They said it possesses advanced anatomical features previously known only in Late Cretaceous and Cenozoic ornithuran birds. Being found in Early Cretaceous strata (assumed 110 million years old) makes it the oldest known member of the clade, but the paper does not call it a missing link. Neither does the summary page This week in Science earlier in the issue; in fact, the summary states this Early Cretaceous bird has many derived features, and It was also well adapted for an aquatic-amphibian lifestylethe fossils even show what appears to be webbing in the feet. This particular species has been known previously from fragmentary fossils, it says. Why, then, are the news media all calling this a missing link? See Fox News, for instance, and Associated Press on MSNBC News which states, Waterfowl fossils fill in a big missing link. It was not missing, and it is not a link; it is a better-preserved specimen of a known species appearing much earlier than previously thought. Live Science did not use the phrase, but said that it might be one of the oldest ancestors of modern birds, even when the original paper noted that the wing feathers are asymmetrical and virtually identical to those of volant [i.e., flying] modern birds. National Geographic News avoided the buzzphrase missing link also, but claimed The discovery supports the view that key characteristics of modern birds evolved quickly and early, long before the demise of the dinosaurs. Quoting Jerald Harris (Dixie State College), a co-author of the paper, It was unexpected to find a bird this advanced in rocks this old. It tells us that the anatomical features we use to characterize modern birds evolved [sic] very quickly. In fact, the specimen shares many skeletal features with modern birds, including the knobby knees characteristic of underwater swimmers like loons and grebes. Even the preserved skin of the webbed feet shows the same microscopic structure seen in aquatic birds today. There doesnt seem to be anything un-modern about this fossil other than its presumed place in the evolutionary tree. At the end of the NG article, Julia Clarke (North Carolina State U) makes the startling claim that there was a wide range of bird types during the period that preceded the emergence [sic] of truly modern birds. That would seem to be the opposite of evolutionary expectations. At the end of their paper, the discoverers noted one other puzzle: Consequently, contrary to recent hypotheses, adaptation to an aquatic ecology appears to have played little part in the survival of birds across the K/P boundary.2 1Hai-lu You et al., A Nearly Modern Amphibious Bird from the Early Cretaceous of Northwestern China, Science, 16 June 2006: Vol. 312. no. 5780, pp. 1640 - 1643, DOI: 10.1126/science.1126377. 2I.e., the Cretaceous-Paleogene boundary, assumed 65 million years ago when some catastrophic event killed off all the dinosaurs (but apparently not the sparrows and ducks). This is scandalous. The news media should be ashamed of themselves. What should have been interpreted as the falsification of common notions about bird evolution has been twisted into support for evolution. In an act of contortion astounding in scope, the media expect us to believe three more impossible things before breakfast: (1) that the anatomical features of modern birds including webbed feet, oil glands and all the other traits necessary for aquatic life, evolved quickly; (2) that soft tissues like webbed feet, downy feathers and pelvic limbs with soft-tissue preservation survived for 110 million years, and (3) that the cataclysm that spelled doom for dozens of kinds of survival-hardened dinosaurs, from the powerful carnivores to the pet-sized mini-sauropods (see 06/10/2006) animals that presumably conquered the world from the arctic to the tropics, outlasting all kinds of environmental changes somehow left our cute feathered friends unscathed.New Noahs Ark Claims From Iran 06/15/2006 ![]() Bob Cornuke was interviewed by John Kasich on Fox News Saturday evening, with the first public showing of videos of an anomalous feature in northern Iran proposed as a candidate for Noahs Ark. The find has also been announced on Christian Worldview Network with 18 photographs and a video. Cornuke, a former police investigator turned hunter for Biblical artifacts (the Ark of the Covenant, the Red Sea crossing, Pauls shipwreck) had a team of notable Christians with him, including Josh McDowell. Though he did not claim this was the Ark of Noah, he said the team members were blown away by the findings. The evidence consists of a 400-foot object of a dark color in surroundings of lighter rock. The object consists of squared-off beams that look like petrified wood (he claims a sample tested positive as petrified wood) arranged like planks. It is at 13,120' elevation in the mountains of northern Iran. He said locals claim it is a resting place of the Ark, and that this location was referred to by ancient historians Josephus and Nicholas of Damascus. He also claims he was led to this site by an eyewitness who drew him a map. Cornuke also said the team found an abundance of seashells and clams in the surrounding rocks over a vast area, indicating that this mountain was once under the sea. The time has come for this claim, and its evidence, to be scrutinized critically yet fairly. Though the pictures are intriguing, the burden of proof will be on the team to associate this object with the Ark of Noah. Years ago Ferdinand Navarra wrote a book about his discovery of hand-hewn timbers found under a glacier on Mt. Ararat; he even had film to prove it. Unfortunately, the artifacts were later discredited as too recent to be associated with Noahs Ark. Another film made great claims about a boat-shaped structure below Mt. Ararat, yet few became convinced it is anything more than a strange geological feature. This reminder is not to put the new claim in the same boat, so to speak, but to show how initially spectacular photographic evidence does not always match the hoped-for results of scientific tests.When Evolutionist Rebukes Evolutionist, Watch Out 06/14/2006 ![]() Faithful are the wounds of a friend, Solomon said. Sometimes comrades need to rein in their own when they stray too far. Kenneth M. Weiss and Anne V. Buchanan (Dept. of Anthropology, Penn State) had some stern rebukes for Nicholas Wade, who was just trying to praise Darwin in his new book Before the Dawn: Recovering the Lost History of Our Ancestors (Penguin, 2006). Despite the need for a tempered and timely treatment of an important subject, this book did not get much praise by Weiss and Buchanan in Nature.1 This book went way over the top in drawing unwarranted genetic and evolutionary influences on human behavior, they complained: Wade seemed determined to find simplistic natural selection behind every trait, and by a lack of attention to issues that are known to inhibit a credible understanding of complex traits, never mind their evolution. In rebuking Wade, however, they revealed a load of dirty laundry about evolutionary theory that may prompt quick damage control operations at Darwinism Strategic Command Center. First, a laundry list of Wades logical errors, hypocrisy, and bad storytelling habits: Wades explanations commit various well-known errors, such as equating correlation with causation and extrapolating from individual traits to group characteristics. Often his arguments and trait choices are laden with Western-oriented value judgements.... |