124 results found.
... Science Frontiers ONLINE No. 130: JUL-AUG 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Midi-Chlorians are with Us!Whoops! We meant to write "mitochondria" in that title. In the movie Star Wars, Episode 1: The Phantom Menace, Jedi master Qui-Gon Jinn explains the origin of the supernatural powers possessed by Jedi knights. It arises, he says, from microscopic lifeforms called chlorians" that dwell within all living cells and reveal the will of the Force. Mitochondria are popularly seen as mere powerhouses within cells, with little influence on the organisms they inhabit. They are, it is believed, just the distant progeny of bacteria that invaded complex cells hundreds of millions of years ago. With only 37 genes in their arsenal, human mitochondria would not seem to pose any threat to humanity. After all, we have about 100,000 genes per cell. Of course, mitochondria do evolve separately from us, and this is a bit disconcerting. Could they be more than mere symbionts? The midi-chlorians of the Jedi knights were "good guys", but our mitochondria sometimes seem to be working for an insidious alien Force. There is good evidence that they: Selected which of your mother's germ cells matured to produce you; Have decided your odds of living to be 100; and May influence your being afflicted with Parkinson's and Alzheimer's , as well as rarer disorders. The first item (or "force") is the most ...
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... Science Frontiers ONLINE No. 137: SEP-OCT 2001 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Unexpected Signals Within Life Forms Multicellular organisms are information networks. They have to be because life is conferred by the flow of information. We all learn how the nervous system carries a heavy traffic of electrical signals, but we hear less about chemical signals, and they are more important. Chemical signalling molecules help cells learn what is going on around them so that they can make decisions concerning metabolism, division, and even whether to die not not. This is mainstream biochemistry, although there is much here yet to be learned. A signalling medium that still survives well off the mainstream is the old idea that information is carried from cell to cell via electromagnetic radiation. Yes, we mean mitogenetic radiation--the infamous M-rays of the 1920s and 1930s. During this period about a thousand technical papers were published on mitogenetic radiation -- mostly in Russian. The champion of mitogenetic radiation was A.G . Gurwitsch. He claimed that fundamental biological functions, such as cell division, were communicated via ultraviolet light. Although a few other researchers said they detected mitogenetic radiation, most could not replicate Gurwitsch's work. Mitogenetic radiation was thereafter subjected to the "cold-fusion" treatment; it was one of those things that "wasn't so"! In a recent article in the Journal of Scientific Exploration, R. Van Wijk tries to reignite interest in "bio-photons" that carry "bio ...
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... Science Frontiers ONLINE No. 128: MAR-APR 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects "Uprooting the Tree of Life"Yes, that is the title of a long article in the February 2000 issue of Scientific American. In the Table of Contents, we see words concerning this article that we never thought would be permitted in a mainstream science magazine. After first noting that 10 years ago it was generally agreed that all organisms evolved from a single ancestral cell that existed about 3.5 billion years ago, there comes the assertion that the Tree of Life: "is far more complicated than was believed and may not have had a single root at all." The article proper relates how the Tree of Life has its own evolutionary history. Twenty years ago, scientists had that single ancestral cell splitting into two main trunks: the prokaryotes (bacteria) and the eukaryotes (every-thing else). More recently, a third trunk has been grafted onto the Tree; namely, the archaea (microorganisms that look like bacteria but possess markedly different genes). The archaea favor extreme environments and, curiously, are more closely related to you and me than are the bacteria. But according to this article (by W.F . Doolittle), the triple-trunked Tree of Life is simplistic. One reason for this is that genes, once thought to flow only from parent to progeny, are now known to travel laterally. Species barriers are broken. Genes jump from trunk to trunk, from ...
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... motionless, its senses are diminished; it is very vulnerable. Neither is there any provable biochemical value to sleep. (See BHF31 in Humans II) Yet, a large fraction of an animal's life is spent in this apparently useless and hazardous condition. Why, then, did sleep ever evolve? But with sleep, come dreams, and maybe an answer is to be seen in them. Cats establish long-term memories during sleep. First, it is relevant that an animal's brain (a cat's brain here) seems to be active even when an animal is sleeping deeply but not dreaming. It seems that during an extremely quiet phase of sleep, when researchers thought that nothing much was happening in the [cat's ] brain, groups of cells involved in the formation of new memories signal one another. The signals, discovered only a few years ago, allow cells in many parts of the brain to form lasting links. Then, when a few cells are stimulated during waking hours, the links are activated and an entire memory is recalled. Deep, dreamless sleep has long been thought to be of little value to an animal. Apparently this is not the case. Deep sleep seems to be valuable in memory activation. Score one for sleep. (Blakeslee, Sandra; "Researchers Link Deep Sleep to Memory Recall," Austin American-Statesman, December 2000. Cr. D. Phelps.) Rats rerun mazes in their dreams. Rats apparently can't escape the rat race, even when they're sound ...
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... Science Frontiers ONLINE No. 132: NOV-DEC 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Unidentified Cellular Object The multitudinous cells that make up our bodies are miniscule factories humming with activity. The microscope reveals mitochondria, chromosomes, centrioles, granules, and a host of entities doing their own things. But even after generations have scrutinized our cells, new objects are discovered. The latest, only recognized in 1986, look like a miniature hand grenades. Called "vaults" these objects are composed of proteins and ribosomal DNA. They exist only in the cells of the higher organisms -- like us. Biologists surmise that they are important in some way but have no idea what they do. (Anonymous; "Cell Biology Mystery," Science, 289:355, 2000.) A "vault," a mammalian cellular object of unknown purpose. From Science Frontiers #132, NOV-DEC 2000 . 2000 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster . The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com . Free resource for people thinking about working at home. ABC dating and personals . For people looking for relationships. Place your ad free. ...
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... but it's all fakery. At the University of Heidelberg, 52 people with rotator cuff tendinitis were split into two groups; 25 were punctured with real needles, the rest just thought they were. In this experiment, the first group showed much greater improvement than those treated with the fake needles. Real acupuncture was more powerful than the placebo effect. Now if we can only figure out how real acupuncture works! (Lawton, Graham; "Needle Match," New Scientist, p. 10, December 4, 1999.) Placebo surgery. Because of the ethical questions, placebo surgery went out of style 40 years ago. A revival is now underway. One promising treatment for Parkinson's disease requires the drilling of holes in the patient's forehead and injecting fetal cells deeply in the brain. This is certainly a far cry from the fake acupuncture needles! One patient, who knew she was involved in a placebo experiment, was lightly sedated during the real drilling. After the holes were completed, she heard the surgeon ask for the fetal-cell implants. Because of this, she was certain she had received the complete procedure. Afterwards, she felt that her condition had definitely improved. But it was all a charade. The doctor did not insert the implants. Her symptoms soon returned. The placebo effect was only temporary. However, some of the younger patients who did get the total procedure did receive permanent benefits. The doctors knew, therefore, that the procedure holds out some promise. (Cohen, Philip; "All in the ...
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... quantum mechanics. You see, in quantum mechanics, an object can exist in two or more states at the same time. This is, of course, a statement of fact rather than an explanation appealing to one's common sense -- a common occurrence in the quantum world. (Cho, Advising "Physicists Unveil Schroedinger's SQUID," Science, 287:2395, 2000) Heat flowing from cold to hot. The revered Second Law of Thermodynamics seems to tell us that heat always flows from hot to cold. But out in space, under special conditions, physicists seem to hedge a bit. The groundbreaking experiment was carried out onboard the Mir space station last year as part of the French-Russian Perseus mission. By warming a copper-and sapphire-walled cell filled with a drop of liquid sulfur hexafluoride and one tiny bubble of gaseous sulfur hexafluoride in near-zero gravity, scientists triggered a slight compression of the bubble. That gentle squeeze raised the temperature of the gas above that of the cell walls. For this to happen, heat must have been transferred from the cooler walls to the hotter gas, scientists report in the 1 May Physical Review Letters. This weird phenomenon can be tossed off as a "transient temperature overshoot." The Second Law didn't really apply because the system was not in thermodynamic equilibrium. Also, the Second Law really concerns changes in entropy rather than temperatures. (Sincell, Mark; "Backward Heat Flow Bends the Law a Bit," Science, 288:789, 2000.) From Science ...
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... from the target. To increase the owl's passive sonar, their auditory neurons multiply the signals instead of adding them as do other neurons. In effect, they create an "auditory map" of their surroundings. On their high-precision auditory maps, a rustling mouse would be highlighted. So far, though, biologists have not learned how neurons can multiply signals. The asymmetrical design of the Barn Owl's ears is essential for pinpointing its prey in the dark. (From: Biological Anomalies: Birds) (Helmuth, Laura; "Location Neurons Do Advanced Math," Science, 292:185, 2001.) Hornets Install Magnetic Markers. Hornets of the species Vespa orientalis affix a tiny crystal of magnetic mineral in the roof of each of the brood-rearing cells in their nests. These crystals are roundish and about 0.1 millimeter in diameter. The mineral is ilmenite with the formula: FeTiO3. The purpose of the magnetic crystals is obscure. The favored explanation is that the hornets use them as guides during nest construction -- sort of like those little flags human surveyors set out. This explanation assumes that hornets can somehow sense and make use of the complex magnetic field created by an array of many tiny magnets. Another question asks where the magnetic crystals come from. Do the hornets secrete them like the magnetotactic bacteria or do they gather them from their environments? (Stokroos, Ietse, et al; "Keystone-Like Crystals in Cells of Hornet Combs," Nature, 411:654, 2001.) Comment. It would ...
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... C .; "Giant Colonies of Pelagic Tunicates..," Nature, 226:464, 1970) Slime molds. Moving down life's ladder to even smaller and simpler organisms, some amoebas have a bizarre life cycle that ends as a superorganism called a "slime mold." If you viewed an amoeba through the microscope in biology lab, you know that they are very tiny, very simple, and most certainly not very bright. But given enough food, some species of amoeba divide and keep dividing until they clump together in a "slug" that sends out streamers and sort of flows along the surface. We now have a mobile superorganism searching for food (mostly bacteria). Eventually, the moving colony of amoebas anchors itself. Some of the superorganism's cells specialize to create a stalk called a "fruiting body." The amoebas in the fruiting body change into spores and are wafted away on the wind. In this way, the simple, lowly amoebas are transformed into a radically different entity. One wonders how this superorganism, this slime mold, is controlled. Where are its sensors and its information processing center, if it possesses one? (Stewart, Ian; "Spiral Slime," Scientific American, 283:116, November 2000.) This question becomes more difficult to answer when we learn that slime molds can display rudimentary intelligence in the sense that they can solve mazes in their search for food. They are not as clever as rats, but they do optimize their travels through the maze. (Nakagaki, Toahiyuki, ...
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... uncertainty does not inspire belief in the accurate readability of this biological blueprint at the present time. Usually left unsaid is the fact that the present blueprint covers only 2-3 % of the territory. That's right, 97-98% of the human genome isn't mapped at all. This uncharted territory is assumed to be "junk" or "nonsense" DNA that plays no role in heredity. Want to bet that this assumption is correct? And don't forget that genes jump around. The genome is really a moving target. Genes also work in concert. It is not one gene coding for one protein, which then has a singular role in creating an operational human being. For example, some 5,692 genes are active in breast-cancer cells. Genes may also have multiple roles. Our present blueprint of the human genome does not display all the mobility and complex interrelationships of the genes. We do know that genes are the blue-prints for the manufacture of proteins. Of these, there may be over 1,000,000 different -- more than ten times the number of genes! These multitudinous proteins are continually being created and transported to where they perform their assigned tasks and are eventually deconstructed. It is this population of proteins (collectively the "proteome") that develops organisms and gives them life. We do not begin to have a blue-print for the proteome, which really tells us how life works. Then, there are epigenetic influences. "Epigenetic?" Yes, the manufacture of proteins ...
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... qualitative world. The language and concepts are so different. But, EEs and EHEs (Exceptional Human Experiences) are so ubiquitous in human life that they should not be ignored. One supposes that they must have some meaning and evolutionary value. The Exceptional Human Experience (EHE) process is a unique, dynamic, progressive, reiterative, evolving pattern of human consciousness development initiated by an anomalous experience and evidenced by expanding levels of reported inner and outer transpersonal awareness. This paper is based on a review of hundreds of experiencer first-person written narratives solicited by Rhea White and the EHE Network over the past decade. It presents an orthogonal expansion of our original 5-stage EHE process outline. The expanded model highlights a 5-stage x 12-classifier matrix design, including 60 unique cells into which characteristics synthesized across and detailed within, experiencer narratives can be captured and mapped. The matrix model offers both a tool for researchers, in the form of a classification grid, as well as a map of key features noted and synthesized across and within, each of the stages of the EHE process. The discussion fleshes out some of the key issues for each of the stages. In addition, the discussion speaks to the overarching processional interactions between stages with a focus toward furthering exploration, research and application. (Brown, Suzanne V.; "The Exceptional Human Experience Process: A Preliminary Model with Exploratory Map," International Journal of Parapsychology, 11:69, 2000.) Comment. How else can one systematize such an ephemeral, elusive, subjective body of observations ...
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... OCT 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Will mtDNA Trump C14 and Projectile Points?Do not imagine for a minute that the Clovis Police are successfully suppressing all radical notions in archeology. Revolutionaries are everywhere. Not the least of these are studying the mtDNA (mitochondrial DNA) of Native American peoples and comparing it with the mtDNAs of Asians and Europeans. The geographical distribution of mtDNA haplogroups can trace out the migratory routes of early humans in the New World and, in addition, provide rough times-of-arrival. Some of this mtDNA evidence will undoubtedly attract the attention of the Clovis Police. But do these law enforcers -- mostly archeologists -- dare to challenge genetic data? Can mtDNA lie? There are in the cells of North American Native Americans mitochondria that seem to divide these peoples into four major "haplogroups." These four groups can be readily traced back to Siberia and northeast Asia. No trouble from the Clovis Police here! But there is also a "haplogroup-X " that does not fit the Clovis paradigm. In North America, haplogroup-X is found frequently among the Algonkian-speaking tribes, such as the Ojibwa. This same haplogroup occurs in Europe and the Middle East, especially Israel. It is notably absent in Asia. Furthermore, the data suggest that haplogroup-X was resident in North America thousands of years before the Vikings and Columbus made landfall. (Schurr, Theodore G.; "Mitochondrial DNA and the Peopling of the New World," American Scientist, ...
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... mtDNA might have been much more like that of the Neanderthals. (Ovchinnikov, Igor V., et al; "Molecular Analysis of Neanderthal DNA from the Northern Caucasus," Nature, 404:490, 2000. Bower, B.; "Salvaged DNA adds to Neandertals' Mystique," Science News, 157:213, 2000. Donn, Jeff; "Neanderthal DNA Has Little Human Link," Austin American-Statesman, March 29, 2000. Cr. D. Phelps.) Comment. From among many possible comments, we settle for just one: It is relevant that mtDNA is not the nDNA (nuclear DNA) that is the primary determinant of an animal's morphology and other attributes. Scientific consensus now holds that mtDNA comes from bacteria that invaded complex cells (eukaryotes) and set up housekeeping in them eons ago. The mitochondria are called "endosymbionts," but we must wonder how symbiotic they really are. Not only does mtDNA mutate much faster than nDNA (" our" DNA), but the mitochondria the mtDNA serves must have different evolutionary goals from us; that is, mitochondria might really be parasites and we are their hosts! See next item. From Science Frontiers #130, JUL-AUG 2000 . 2000 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster . The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com . Free resource for people thinking about working at home. ABC dating ...
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... Science Frontiers ONLINE No. 105: May-Jun 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mixed-up people Mother-child chimeras. Investigators have discovered cells carrying male DNA among a mother's blood cells 27 years after the birth a male child. Evidently, descendents of fetal cells escape during pregnancy and persist in the mother for years after birth. The mother thus becomes a blend of herself and her child (or, possibly, children) - a kind of chimera. The question is: Why doesn't the mother's immune system destroy these foreign cells? Some scientists speculate that these escaped and still-surviving cells may help explain why women are more susceptible than men to autoimmune diseases. (Travis, J.; "Kids: Getting under Mom's Skin for Decades," Science News, 149:85, 1996) Fatherless blood. In Britain, a male child has been found with normal skin, with each cell carrying the expected X and Y chromosomes, but "his" blood is all female. Its cells contain the mother's two X chromosomes with no paternal contribution. What happened? One theory is that the mother's unfertilized egg spontaneously divided. Then, fertilization occurred, but it was only partial. The sperm got to just one of the two or more cells derived from the egg. The embryo continued to develop but it was part all-mother and part mother-father! "Partial parthenogenesis" seems to be the proper term here ...
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... Science Frontiers ONLINE No. 82: Jul-Aug 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Japanese Claim Generates New Heat While most scientists, especially the hotfusionists, have been ridiculing cold fusion as "pathological science," more adverturesome researchers have been forging ahead. The most interesting current results, gleaned from many, are those of A. Takahashi, who is a professor of nuclear engineering at Osaka University. "He says his cold-fusion cell produced excess heat at an average rate of 100 watts for months at a time. That's up to 40 times more power than he was putting into the cell, and more power per unit volume (of palladium) than is generated by a fuel rod in a nuclear reactor. " Takahashi has made several modifications in his cold-fusion cell. Rather than palladium rods, he employs small sheets. In addition, surmising that cold-fusion phenomena might prosper better under transient conditions, he varies cell current. Takahashi, however, measures only a few of the neutrons expected from the usual nuclear fusion reactions. Undaunted, he remarks, "This is a different ballgame, and it could be a different reaction." Indeed, some exotic fusion reactions do generate neutrons. (Freedman, David H.; "A Japanese Claim Generates New Heat," Science, 256:438, 1992.) From Science Frontiers #82, JUL-AUG 1992 . 1992-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects First cold-fusion bomb?Possibly we are overreacting to the following event: "Cold fusion researchers are puzzled and worried by an explosion last week that killed one of their colleagues, a British electrochemist. A cold fusion 'cell' at SRI International in Menlo Park, California, blew up while Andrew Riley was bending over it, killing him instantly." Now small explosions in cold-fusion cells are not unknown. At the tops of some cells palladium-wire electrodes are exposed to oxygen and deuterium (heavy hydrogen) gases. If the palladium wires are not protected by films of water, the palladium can catalyze the explosive combination of the oxygen and hydrogen. This sometimes happens if a dry spot develops on a wire. Such detonations, though, cause little damage. The SRI explosion was much more powerful. The detonating cell (only 2 inches in diameter and 8 inches long), not only killed Riley but peppered three other researchers in the lab with debris. (Charles, Dan; "Fatal Explosion Closes Cold Fusion Laboratory," New Scientist, p. 12, January 11, 1992.) Comment. One cannot refrain from asking if the explosion involved only chemical energy. From Science Frontiers #80, MAR-APR 1992 . 1992-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 83: Sep-Oct 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cold-fusion update SRI explosion due to wayward piece of Teflon? The final report on the fatal explosion of a cold-fusion experiment at SRI International (SF#80) blames a loose piece of Teflon that may have blocked a gas outlet tube. Possible scenario: After many hours, the researchers finally noticed something was awry. When A. Riley lifted the cell from its water bath, it exploded. "The investigators believe that hot palladium ignited the pressurized mixture of oxygen and deuterium. The bottom blew off the cell, turning the rest of it into a rocket which shot upwards at 50 metres per second. It struck Riley in the head." (Charles, Dan; "Piece of Teflon Led to Fatal Explosion," New Scientist, p. 5, June 27, 1992. Also: Holden, Constance; "Fusion Explosion Mystery Solved," Science, 257:26, 1992.) Comment. The proposed scenario leading to the explosion is riddled with the words "may" and "believe." Another cold-fusion book: Huizenga, John R.; Cold Fusion: The Scientific Fiasco of the Century , 259 pp., 1992, The title betrays the book's slant. A single sentence from Nature's review will suffice: "Commenting on the hundreds of millions of dollars of research time and resources that were taken up in showing that there is no convincing ...
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... brain. Unquestionably the brain does rely in part upon the transmission of electrical signals for some of its operations, but it now appears that there is a complementary mode of communication that relies upon chemistry rather than electricity. While the fastest way to transmit signals in the brain seems to be along the neurons and across their points of contact, the synapses, other signals may travel -- a bit more slowly -- by what is termed "volume transmission." Volume transmission is like broadcasting radio waves in three dimensions, except that in the brain the radio waves are replaced by the diffusion of chemical signals. L.F . Agnati et al explain: ". .. our experiments have shown that neurons also release chemical signals into the extracellular space that are not necessarily detected by neighboring cells but by cells far away, in the same way hormones released by a gland into the bloodstream can have effects on cells far away. These processes occur on much longer time scales than does synaptic transmission, and they probably play a distinct role, perhaps regulating the brain's responses to synaptic signals. .. .. . "We might speculate that volume transmission is involved in the neuroendocrine system and the central autonomic system. Changes in the activity of the brain during sleep and wakefulness, relative levels of alertness, mood and sensitivity to pain may be highly dependent on volume transmission. Thus, although information regarding to location of pain is carried by the circuitry of the nervous system, the intensity and duration of the pain may be somewhat modulated by the ambient homoral signals. In ...
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... Science Frontiers ONLINE No. 90: Nov-Dec 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Tale Of Two Noses The vomeronasal and olfactory sensory systems. (L . Stansass, M. Reingold) First: An Anecdote. Some 30 years ago, D. Berliner, at the University of Utah, was studying human skin. To acquire raw material, he scraped skin cells from the insides of casts discarded by skiiers who had had broken bones. From this debris, Berliner extracted numerous chemical compounds. As far as anyone could tell, these substances were odorless, so he stored them in open flasks. However, Berliner noticed that when people were working in the lab with the flasks, they were more friendly and relaxed than normal. He could not divine the reason until some months later when he decided to cover the flasks of skin-derived substances. Curiously, the lab workers soon reverted to their usual grumpy selves! What could account for this strange behavior change? Knowing that animals often communicated with one another employing chemicals called pheromones, Berliner suspected that the flasks had been releasing odorless human pheromones. Sure enough, analysis of the skin-derived materials proved him correct. Next: A Look Up the Nose. Biologists have long realized that animal noses actually contain two sensory channels. The first is the familiar olfactory system, which humans also possess. The second channel is the vomeronasal system. In animals, each system has its own separate organs, nerves, and bumps in the brain. The function ...
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... , a respected archeologist from the Andover Foundation for Archeological Research, has charted a 30,00040,000-year-old paleonotological record of ancient camels, horses, tapirs, and other fauna found while excavating this cave. Intermixed with the animal bones are layers of charcoal (easily carbondated) and hints of human occupation. But don't we all know that humans did not arrive in the New World until 12,000 years ago? Nevertheless, there they are: (1 ) rude human tools; and (2 ) a possible human palm print. Mainstream archeologists are stonewalling again; there must be some mistake! (Appenzeller, Tim; " A High Five from the First New World Settlers?" Science, 255:920, 1992.) Scene: Inside Amerind cells. DNA analyses of the mitochondria present in the cells of North American Indian populations indicate that the Eskimo-Aleut and Nadene populations arrived about 7,500 years ago. The more geographically widespread Amerind population, however, seems to be descended from two separate influxes; the first about 30,000 years ago, the second about 10,000 years ago. D. Wallace, from Emory University, surmises that the sharply defined rise of the Clovis culture, conventionally dated from 12,000 years ago, may have resulted from the second Amerind immigration. (Lewin, Roger; "Mitochondria Tell the Tale of Migrations to America," New Scientist, p. 16, February 22, 1992.) Comment. The 30,000-year date, however, is consistent with ...
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... Science Frontiers ONLINE No. 67: Jan-Feb 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Dna On Cell Surfaces DNA attached to a cell's surface? Such a notion was shocking to scientific orthodoxy in the 1970s. At that time, observations of the phenomenon were rejected. Even worse, funding to continue the work was not forthcoming. Happily, other researchers have later stumbled onto cell-surface DNA; and this startling phenomenon has been rescued from conformity's wastebasket. Now that cell-surface DNA can be talked about, we can wonder aloud where it comes from and what its significance is. First, this out-of-place DNA -- thought to amount to about 1% of a cell's total DNA -- could come from either inside the cell itself or from blood-borne cellular debris. There is considerable argument on this point. Second, this cell-surface DNA does not appear to undergo replication nor does it perform any gentic coding function. Speculation is that it may somehow be involved in the immunological response of the body; for its position on the cell surface is ideal for such a role. Some researchers think that cell-surface DNA may aid in the drug treatment of T-cell lymphoma, a type of cancer. On the other side of the coin, it may mask those molecules on tumor cells that provoke immune responses. Such divergence of opinion indicates how much there is to learn here. (Wickelgren, Ingrid; "DNA's Extended ...
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... Science Frontiers ONLINE No. 73: Jan-Feb 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Things that ain't so Back in 1953. Irving Langmuir, the famous American physicist, gave a talk at General Electric on the subject of "pathological science." He discussed several things that could not be so . Of course, UFOs were on the list, but so was mitogenetic radiation -- radiation supposedly emitted by cells when they divide. In the context of Langmuir's talk, despite his emphatic interment of the subject, mitogenetic radiation was resurrected recently in the pages of Physics Today. A letter from V.B . Shirley included several recent scientific references that suggest that Langmuir was premature. "The gist of these articles is that many cell systems emit ultraviolet light during or immediately before cell division and that the total effect of this emission on neighboring cells is unknown." (Shirley, Vestel B.; "Mitogenetic Radiation: Pathology or Biology?" Physics Today, 43:130, October 1990.) From Science Frontiers #73, JAN-FEB 1991 . 1991-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 69: May-Jun 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Spontaneous order, evolution, and life In our thinking, one of the most remarkable articles ever to appear in Science bears the above title. Most re markable of all is the use of the word "spontaneous" without philosophical comment. The stimuli for the research described are such observations as: (1 ) life exists; (2 ) life evolves; (3 ) the fossil record displays stasis, extinctions, and great gaps between phyla and lesser classifications; and (4 ) disordered molecules move smoothly and surely into the order manifest in the living cell. The question asked in the article is whether science has missed something in its description of the origin and development of life. Just what makes molecules coalesce into cells and humans? The answer given is: spontaneous self-organization ! In other words, there is no guiding external force. Molecules do this spontaneously. There are even computer models being developed, based on a branch of mathematics called "dynamical systems," that describe how this all happens - spontaneously, of course. (Waldrop, M. Mitchell; "Spontaneous Order, Evolution, and Life," Science, 247:1543, 1990.) Comment. When water molecules spontaneously cluster together to form a snowflake, with all its symmetry and order, science explains the process in terms of the properties of water molecules. The same must be true when molecules merge to form life forms. But ...
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... rain forest? Probably from polarized sinlight, thinks Franks. But here we have a problem: each army ant, instead of having multi faceted compound eyes like most insects, has just a single facet in each eye. "The mystery is how the colony can navigate with each of its workers having such rudimentary eyesight. In my wildest dreams, I imagine that the whole swarm behaves like a huge compound eye, with each of the ants in the swarm front contributing two lenses to a 10- or 20-m wide 'eye' with hundreds of thousands of facets." (Franks, Nigel R.; "Army Ants: A Collective Intelligence," American Scientist, 77:139, 1989.) Comment. By analogy, the human body is a colony of individual cells, most of which are specialized in some way. Individual human cells can be grown alone, but they are as directionless as the 100 ants on the flat surface. From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 76: Jul-Aug 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Psi Effects In The Sacrifice Of Marine Algae It is safe to say that mainstream science will categorically reject the results of the experiments reported below. The reason is simple: no known mechanism exists for ESP -- in this instance, the anomalous transfer of information between isolated life forms. Experimental setup for measuring the activity of marine algae. Two scientists at the University of Delaware have designed an experiment that measures the activity of marine algae in a seawater culture. By passing a laser beam through the culture and thence to a photomultiplier tube, they can, utilizing the Doppler shift, measure the collective activity of the cells. (See figure.) Various experiments were run by the Delaware researchers, but their second series in particular seems worth reporting. "A second series of experiments used the sacrifice of clones as a distant stimulus. The data appear to show that the marine alga Tetraselmis suecica reacts dramatically to the sacrifice of cells in a physically isolated aliquot of the same culture if the experimenters are aware of the moment of sacrifice, and excited by the novelty of the experiment. In sharp contrast, only marginally significant results were obtained when the same experiment was run entirely automatically, with the time of the sacrifice defined by random number selection, and the experiment activated by computer command in an empty laboratory." (Pleass, C.M ., and Dey, N. Dean; "Conditions That Appear to Favor Extrasensory ...
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... Science Frontiers ONLINE No. 77: Sep-Oct 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Water's memory or benveniste strikes back J. Benveniste has broken a two-year drought in the "water-memory" or "infinite-dilution" saga. "Working with colleagues at INSERM, the French medical research council, in Paris, Benveniste has completed fresh experiments to test his assertion that solutions of antibody diluted to the point where they no longer contain any antibody molecules continue to evoke a response from whole white blood cells, as if they possess 'ghosts' of the original molecules. If proven, this would shatter the laws of chemistry and vindicate homeopaths, who say that extremely dilute drugs can have a physical effect." Benveniste's latest scientific paper was published in Comptes Rendus after being rejected by both Nature and Science. Benveniste states that he has corrected the flaws in his original research that evoked passionate responses from the scientific world. However, Benveniste's latest paper prompted one of Nature's reviewers to charge that Benveniste was "throwing out data because they don't fit the conclusion." This story is not yet finished, because Benveniste promises to reveal new research that demonstrates that a solution of histamine, from which all traces of histamine were subsequently diluted out, can still affect blood flow in the hearts of quinea pigs! Furthermore, this phenomenon can be inhibited by the application of weak magnetic fields!! (Concar, David; "Ghost Molecules' Theory Back from ...
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... Science Frontiers ONLINE No. 67: Jan-Feb 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Geomagnetic Activity Related To Mental Activity "Several recent reports have indicated significant relations between extrasensory perception (ESP) experiences and performances and the Earth's geomagnetic field (GMF) activity. ESP experiences are reported more frequently, and accuracy of laboratory ESP is more accurate, on days of relatively quiet GMF activity. On the other hand, there are indications that a complementary paranormal process, psychokinesis, may be enhanced by high GMF activity. We conducted retrospective analyses of possible relations between GMF activity and (a ) electrodermal activity (as an index of sympathetic autonomic activity), (b ) rate of hemolysis of human red blood cells in, (c ) attempted distant mental (i .e ., psychokinetic) influence of electrodermal activity, and (d ) attempted distant mental (psychokinetic) influence of rate of hemolysis. For each of these four measures, high activity was associated with high GMF values, while low activity was associated with low GMF values. The relations were statistically significant for three of the four analyses and showed a consistent trend in the fourth." (Braud, William G., and Dennis, Stephen P.; "Geophysical Variables and Behavior; LVIII. Autonomic Activity, Hemolysis, and Biological Psychokinesis: Possible Relationships with Geomagnetic Field Activity," Perceptual and Motor Skill , 68:1243, 1989.) From Science Frontiers #67, JAN-FEB 1990 . 1990-2000 William R ...
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... to a Mercurian, the sun comes to a stop in the sky over one of these points and then moves backwards to the other point 180 away. As the sun tarries over these two spots, it heats them preferentially. The strange apparent motion of the sun is due to the 3:2 ratio between Mercury's period of revolution around the sun (88 days) and its axial spin period (59.6 days). What is surprising is that the energy detected radiating from the two hot spots is all reradiated solar energy; that is, there seems to be no contribution at all from Mercury's core! If no heat is leaking out of Mercury's core, the core itself is very likely solid. If it is solid, it cannot establish convection cells and thus generate a magnetic field through dynamo action. But back in 1975, the Mariner 10 spacecraft radioed back that Mercury actually does possess a magnetic field, and a surprisingly large one at that. (Wilford, John Noble; "Theory of Mercury's Hot Poles Is Shown to Be a Fact," New York Times, June 13, 1990. Cr. J. Covey.) Comment. Something is clearly awry. This inconsistency could mean that the dynamo theory presumed to be responsible for planetary magnetic fields is incorrect. Reference. Mercury's anomalous magnetic field is cataloged in section AHZ in our catalog: The Moon and the Planets. To order, visit: here . From Science Frontiers #71, SEP-OCT 1990 . 1990-2000 William R. ...
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... a few other mammals and marsupials evolved foregut fermentation. It is hardly a primitive development! Aside from the smell of fermenting vegetable matter, the hoatzin is a rather remarkable animal - more advanced and well-adapted to its environment than previously thought. Grajal et al remark on all the advantages that foregut fermentation confer on the hoatzin and how remarkable it is that this digestive process can be accomplished in such a small volume (cows have huge stomachs). How did the hoatzin hit upon this mechanism before the mammals did? Why didn't other birds "adopt" it? Grajal et al speculate about this hoatzin advance: "Their highly specialized digestive strategy may have arisen from an ancestral nonobligate folivore because of an evolutionary trade-off between detoxification of plant chemical defenses and enhanced use of cell wall as a nutritional resource." (Grajal, Alejandro, et al; "Foregut Fermentation in the Hoatzin, a Neotropical Leaf-Eating Bird," Science, 245:1236, 1989.) Comment. The rather murky quotation above is only speculative. Leaves are abundant in the tropics, and it is fair to ask why other birds did not develop foregut fermentation. From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William R. Corliss ...
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... p.000. where biogenic stalactites were described, have we persued the idea that minerals, including crystal forms, might be biogenic. We now have at hand a survey of biogenic minerals. It turns out that biogenic minerals are quite common - so common, in fact, that the Gaia concept is recalled, in which biological processes preside over much that happens upon this planet. Here follows a sampler of some biogenic minerals: Much, if not all, travertine (calcite and/or aragonite) and silicious sinter (opal) are deposited through algal action. Much pyrite and marcasite in sedimentary rocks comes from bacterial sulfate reduction. Bacterial breakdown of oil produces organic complexes that dissolve, transport, and precipitate quartz. The reknowned Herkimer "diamonds" may be of biological origin. Living cells synthesize isometric crystals of magnetite. Mitochondria manufacture crystals of hydroxylapatite. Better known are the apatite in bones and teeth and the aragonite, calcite, or fluorite in the vestibular systems of vertebrates. (Dietrich, R.V ., and Chamberlain, Steven C.; "Are Cultured Pearls Mineral?" Rocks and Minerals , 64:386, September/October 1989. Cr. R. Calais) From Science Frontiers #66, NOV-DEC 1989 . 1989-2000 William R. Corliss ...
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... de Sarre, publishes a little journal called Bipedia . In the first issue of Bipedia , de Sarre sets out, in English, his basic thesis: Abstract. "The explanation of Man's special nature is to be sought in the original combination formed by a primordial brain, the globular form of the skull and initial bipedalism. The ape, when compared with Man, appears to be rather a vestige of Man's ancestral line than his predecessor, according to the views of Max Westenhofer, Serge Frechkop, Klaas de Snoo and Bernard Heuvelmans. The study of the human morphology allows logically to carry the problem of Man's origin back to a very early stage of the evolution, and not to which has been reached by apes. From chromosomal and DNA comparison in the cells of living apes and people, several researches argue to-day that humans are genetically more like the common ancestor than is either Chimpanzees or other apes. The array of facts and considerations should be sufficient for an unbiased mind to discount away any idea of simian antecedents in Man's ascent." The body of the article supports de Sarre's thesis with observations from embryogenesis, comparative anatomy (skull, hand, foot), and phylogenesis. (de Sarre, Francois; "Initial Bipedalism: An Inquiry into Zoological Evidence," Bipedia , 1:3 , September 1988.) Comment. Obviously, de Sarre is taking an extreme position, and any observations supporting his position are anomalous by definition. From Science Frontiers #65, SEP-OCT 1989 . 1989- ...
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... of typhoid and cholera exist; and that (3 ) may be incorrect, since SIV (Simian Immunodeficiency Virus) does induce simian AIDS in monkeys. (Weiss, Robin A., and Jaffe, Harold W.; "Duesberg, HIV and AIDS," Nature, 345:659, 1990.) Also: Brown, Phyllida; "' Selective' TV Documentary Attacked by AIDS Researchers," New Scientist, p. 23, June 16, 1990.) Comment. However self-assured the mainstreamers are, they must have flinched at a paper given by L. Montagnier, of the Pasteur Institute, at the recent AIDS conference in San Francisco: "Montagnier says research conducted in his lab suggests HIV initially exists peacefully within the CD4 T-lymphocytes, white blood cells that assist in immune defenses. But co-infection with a mycoplasma, he contends, may transform the slowly replicating HIV into a killer." (Fackelmann, K.A .; "Data and Dispute Mark AIDS Meeting," Science News, 137: 404, 1990.) Reference. The many anomalies associated with HIV and AIDS are covered in BBH14, BBH22 in our catalog: Biological Anomalies: Humans II. For details, visit: here . From Science Frontiers #71, SEP-OCT 1990 . 1990-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 58: Jul-Aug 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bacteria One dictionary's definition: "Widely distributed group of microscopic, one-celled vegetable organisms..." As a matter of fact, the nearly universal image of a bacterium is that of a simple, single-cell organism. But: "That view is now being challenged. Investigators are finding that in many ways an individual bacterium is more analogous to a component cell of a multicellular organism than it is to a free-living, autonomous organism. Bacteria form complex communities, hunt prey in groups and secrete chemical trails for the directed movement of thousands of individuals." J.A . Shapiro, author of the preceding quote, attributes the simplistic picture of bacteria to medical bacteriology, in which disease-causing bacteria are classically identified by isolating single cells, growing cultures from them, and then showing that they cause the disease in question. In the microscopic real world, bacteria virtually always live in colonies, which possess collective properties quite different and much more impressive than those of the single-cell-in-a -dish! That old human urge for reductionism has led us astray again. Shapiro seeks to remove the blinders of reductionism in a wonderful article in the June, 1988, issue of Scientific Amer can . We have room here to mention only the Myxobacteria, many of which never exist as single cells in nature. Even those that do are "social" in the sense that ...
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... Science Frontiers ONLINE No. 51: May-Jun 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Evolution Through Mergers The overview in Natural History describes how, in theory, the mitochondria in cells were created by bacterial invasion. The presence of chloroplasts in plants, too, may have come about in this way. A case also exists for the alliance of spirochetes with cells to form flagella and cilia. These three "mergers" provided cells with metabolism, photosynthesis, and mobility. Margulis and Sagan obviously do not believe that the "bacterial connection" ended there. They bring their article to a close with an almost poetic manifesto that we now quote in part. The context of the quotation is their assertion that plant and animal evolution would never have taken place unless one life form attacked another and the latter defended itself, all this followed by accomodation and the development of a symbiotic relationship. "Uneasy alliances are at the core of our very many different beings. Individuality, independence -- these are illusions. We live on a flowing pointillist landscape where each dot of paint is also alive. Earth itself is a living habitat, a merger of organisms that have come together, forming new emergent organisms, entirely new kinds of 'individuals' such as green hydras and luminous fish. Without a a life-support system none of us can survive. It is in this light that we are beginning to see the biosphere not only as a continual struggle favoring the most vicious organism but also as an endliess dance of diversifying ...
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... Online All Issues This Issue Sourcebook Project Sourcebook Subjects Fractals, fractals everywhere Anyone who follows the popular scientific literature knows that fractals are now "in." Commonly employed to "explain" patterns in nature, fractals are, from a simplistic viewpoint, mathematical ways to predict the development of a growing structure, be it a crystalline mass, a plant, or the universe-as-a -whole. Yes, the universe-as-a -whole, the clouds of stars and clusters of galaxies, may be mimicked by cellular automata (i .e ., fractals). Imagine the universe as a cubical lattice, and start in one corner, adding one layer of cubes after another. Galaxy distribution could be simulated by using a rule telling us which of the added cubical cells had galaxies in them and which did not. "The rule actually used supposes that the question whether each point in a newly added layer will (or will not) be occupied by a galaxy is mostly determined by the occupancy of the five nearest neighbors in the previous layer, but for good measure, there is a random variable to introduce an element of white noise to the system. To make the process a little more interesting, the determination whether a new site is occupied depends on whether a number characteristic of that site, and calculated by simple arithmetic from the corresponding number for the five nearest neighbors in the preceeding layer, exceeds an arbitrarily chosen number." Comparing this fractal simulation with the observed universe is startling. The agreement is "spectacularly successful." (Maddox, ...
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... currents of more than a million amps. "The currents are spread too thinly for power production, but their existence helps account for problems experienced generally in interpreting the magnetic data used to produce geological maps. "The circuit was found using a sensor which detects fluctuating electric fields in the earth's crust. These are created in response to electrical events, such as thunderstorms and the movement of dissolved salts in artesian water." (" Scientists Discover Huge Underground Circuit," Monash Review, p. 10, December 1986, Cr. R.E . Molnar, The Monash Review is an Australian publication.) Comment. Could it be that a portion of the earth's "permanent" magnetic field is likewise generated by internal electrical currents? Are the ponderously moving internal convection cells and widely accepted dynamo effect really necessary? In other words, could our planet be a huge natural battery based upon geochemical differences? Reference. Earth-current anomalies are cataloged under EZC5 in Inner Earth. Book details here . From Science Frontiers #54, NOV-DEC 1987 . 1987-2000 William R. Corliss ...
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... increase with time. Do formative or guiding principles exist that science does not take into account? The two articles have very different answers. The creative cosmos. "Most people accept without question that the physical world is coherent and harmonious. Yet according to the traditional scientific picture, the Universe is just a random collection of particles with blind forces acting upon them. There is, then a deep mystery as to how a seemingly directionless assembly of passive entities conspire to produce the elaborate structure and complex organisation found in nature." The author of this introductory paragraph, P. Davies, asks, as we all do, "What is the origin of this creative power?" In groping for an answer, he presents first a common example of "blind" organization: the hexagonal convection cells in a pan of heated water. Using for a stepping stone the cooperative action of atoms in a laser, he leaps to the development of an embryo from a single strand of DNA! All such systems are "open"; that is, energy can flow in and out. They are also nonlinear, which means that chaotic, unpredictable action may occur. Davies implies that such action can be "creative," almost as if they possessed free will! His final example is that of the network with large numbers of interacting sites or nodes. With random inputs, large networks do exhibit self-organization. Network theory is now very popular in the field of artificial intelligence. (Remember the computer Hal in 2001?) Davies's conclusion: ". .. Neo ...
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... Science Frontiers ONLINE No. 51: May-Jun 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Mite Pockets Of Lizards "Many lizards are infested by chig gers, the larvae of trombiculid mites, which feed on tissue fluid and cell debris. Surprisingly, lizards seem to go out of their way to attract the chiggers -- they have special mite pockets that provide a protected, warm and humid site. In many cases, the skin of the lizard also has smaller scales than normal and a good blood supply in the pocket, which enables the parasites to feed more readily." There does not seem to be any advantage to the lizards providing plush accommodations for the chiggers. The chiggers can wreak havoc on their hosts in the form of skin lesions, allergic reactions, secondary infections, and the transmission of diseases. Nevertheless, some 150 species in 5 distinct lizard families possess mite pockets, which are often located in different places in different lizard species. Apparently, the mite pockets evolved separately several times. But why? (Benton, Michael J.; "The Mite Pockets of Lizards," Nature, 325:391, 1987.) Comment. Why haven't the lizards evolved thicker skin or some sort of chemical defense instead of reducing their fitness with mite pockets? Or, are other factors operating? From Science Frontiers #51, MAY-JUN 1987 . 1987-2000 William R. Corliss ...
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... sciences has shown that we can no longer regard DNA - the stuff of genes - as a direct and complete set of instructions for the synthesis of proteins. The evidence begins to suggest that messages in the DNA are, in themselves, no more precise than the symbols and sounds with which we communicate. As in the languages with which we are familiar, the correct sense of a message written in DNA seems to depend on the rigorous checking and correction of errors, and on the context in which they are read." The final sentence of the article is really paradigm-shaking: "Thus genetic and evolutionary changes are no longer confined solely to the genome at the pinnacle of a hierarchy of information and control, but reside also in the interplay between DNA and the other components of cells." (Tapper, Richard; "Changing Messages in the Genes," New Scientist, p. 53, March 25, 1989.) Comment. If DNA can be read in more than one way, depending upon the context, our current concept of evolution may be in jeopardy. For example, how does an organism transmit "context" to its offspring; the same thought applies to error-correcting capabilities. From Science Frontiers #63, MAY-JUN 1989 . 1989-2000 William R. Corliss ...
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... journals. In the latest issue, a medical doctor reviews the hoary ontogeny-recapitulates-phylogeny hypothesis. As classically stated by evolutionists, the human embryo passes through stages in which it looks like creatures that preceded it in evolution. The doctor, G.R . Culp, remarks that although evolutionists maintain that reputable scientists no longer employ this argument as evidence for evolution, the "recapitulation" claim is still being made in some classrooms and even during some of the recent creationist-evolutionist debates. In some humans such as the "hairy child" sketched above, the lanugo or natal hair persists beyond the womb. Drawing from Incredible Life. Culp then shows why the recapitulation claim failed in five stages in the development of the human embryo. A rich lode of anomalies exists here: cells migrate purposefully, mysterious struc-tures grow and then disappear; it is a kaleidoscope of changing structures and processes. Take, for example, the "hair stage": "The embryo is covered with very fine hair at about the seventh month of development of the embryo. The evolutionist claims that this is evidence that men came from hairy mammals like the apes. However, these hairs are unlike the hair found on apes, as they are very small in diam eter and always soft and unpigmented. This hair disappears from the body soon after birth. It is called lanugo and is quite unlike the permanent hair that grows on the human body and head..." To the anomalist, the battle between the evolutionists and creationists is secondary to the anomalies that keep cropping up ...
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... Science Frontiers ONLINE No. 49: Jan-Feb 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Million-cell memories?Brain researchers have long believed that simple memories were stored as "traces" in chains of brain cells. However, E.R . John and his colleagues have confounded such thinking. They have prepared metabolic memory maps of cats' brains using carbon-tagging. In this way, they discern which parts of the brains have been activated during the recall of an element of memory. Such experimentation has demonstrated that huge numbers of brain cells actively participate in the recall of a simple thought. John stated, "I thought we'd find maybe 20,000 to 40,000 cells involved in the learned memory....The shock was that it was so easy to see wide-spread metabolic change....The number of brain cells [between 5 million and 100 million] involved in the memory for a simple learned discrimination made up about one-tenth of the whole brain." The findings of John et al are hotly contested by some brain researchers. One obvious conflict is that if up to 100 million brain cells are involved in storing just one simple memory, the brain will quickly use up all available cells. It must be that individual brain cells can participate in the storage of many different memories. The conventional mem-ory-trace theory would have to be replaced by a new type of memory architecture. (Bower, Bruce; "Million-Cell ...
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... Science Frontiers ONLINE No. 42: Nov-Dec 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Guiding cell migration "Cell movement has always been thought to be independent of the extracellular matrix which encourages and guides movement; the cells were thought to move along the pathways under their own power, rather as a train moves along a railway track. New research by Stuart Newman, Dorothy Frenz and James Thomsack, of the New York Medical College, now suggests that the extracellular matrix itself may help to propel cells along." (Experiment details omitted here.) "No one knows whether this matrix-driven movement actually occurs in living organisms. But potentially, it could achieve the high-speed movement of cells depending on the size and characteristics of the cells. Considering that many of the events of development occur remarkably rapidly, this is an attractive possibility for cell migration. " (" More Clues to Cell Movement, " New Scientist, p. 30, September 5, ]985. ) (This phenomenon is not trivial, for it implies that non-living substances (the extracellular matrix) are not necessarily passive but might even be cooperative, if such an adjective can be applied to the non-living. WRC ) From Science Frontiers #42, NOV-DEC 1985 . 1985-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 48: Nov-Dec 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Geocorrosion?In studying the minute electrochemical cells responsible for metal corrosion, J.G . Bellingham and M.L .A . MacVicar, at MIT, discovered a remarkable effect: "One interesting and surprising property of electrochemical cells was discovered by accident. Normally, the magnetometer scans each cell as the cell moves horizontally beneath the magnetometer. During one run, the researchers left the cell in a single position for a long time while the magnetometer was still on. After 20 minutes or so, the magnetic field strength began to drop. 'It was very dramatic to watch this field collapse,' says MacVicar. After about a minute at zero, the magnetic field grew larger again but in the opposite direction." These reversals occurred over and over again at regular intervals. (Peterson, I.; "Tracing Corrosion's Magnetic Field," Science News, 130:132, 1986.) Comment. The self-reversal of magnetic specimens has been observed before under some conditions, but here is a periodic reversal of an electrochemical system. Why place it under the heading of Geology? Because the earth's field seems to reverse on a fairly regular basis. Catastrophists have invoked as teroid or cometary collions to account for these flip-flops, but it might be that the earth contains giant electrochemical cells that spontaneously reverse on a million-year timescale rather than minutes. We know the earth' ...
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... Science Frontiers ONLINE No. 41: Sep-Oct 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Genetic Garrulousness It is tempting to predict that those cells with the most genetic material will belong to the most advanced organisms. One would, for example, expect to find more DNA or nucleotide pairs in human cells than the cells of bacteria or plants. In the case of the bacteria, this expectation is realized. Some plants, however, have one hundred times more DNA per cell than humans. Some fish and salamanders do, too. One reason why there is no simple relationship between a cell's genetic complement and the organism's complexity is that a lot of genetic material is apparently useless, with no known functions. Human genes, by way of illustration, possess about 300,000 copies of a short sequence called Alu. The Alu sequences seem to be simply dead weight -- functionless -- yet continuously reproduced along with useful sequences. One purposeless mouse gene sequence is repeated a million times in each cell. (Stebbins, G. Ledyard, and Ayala, Francisco J.; "The Evolution of Darwinism," Scientific American, 253:72, July 1985.) Comment. Why so much redundance? Or is there some purpose for this excess genetic material that we haven't yet descried? The "useless" sequences may merely be left over from ancient gene shufflings; or they may be awaiting future calls to action. The above tidbits come from a long review article that is ...
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... Science Frontiers ONLINE No. 47: Sep-Oct 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Heretical Evolutionary Theory "Over the past 15 years, away from the limelight of mainstream evolutionary argument, cell biologists have been debating a concept that is fundamental to our understanding of how cells evolved. It is the proposal that some of the structures that are found in the larger cells of animals, plants and fungi (eukaryotic cells) are the descendants of simpler bacteria-like organisms (prokaryotic cells) that had at some stage entered into an intracellular existence, or endosymbiosis. The idea is not a new one, but only in the light of modern experimental evidence has it become acceptable to many biologists. If the hypothesis is correct, then virtually all the major groups of familiar organisms originated 'suddenly' through endosymbiotic associations." Following this lead paragraph, with its paradigm-shaking final sentence, are three pages summarizing the biological evidence favoring evolution by endosymbiosis. (Kite, Geoffrey; "Evolution by Symbiosis; The Inside Story," New Scientist, p. 50, July 3, 1986.) Comment. We cannot possibly do justice to this exciting idea of evolution forced by the uniting of different organisms in the limited format of Science Frontiers. Instead, we encourage readers to purchase a new book by L. Margulis and D. Sagan (son of Carl Sagan and L. Margulis) entitled Micro Cosmos. In passing, we must also remark on the obvious relationship of endosymbiosis to F. Hoyle's ...
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... Science Frontiers ONLINE No. 49: Jan-Feb 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Personality And Immunity The following abstract appeared in the American Journal of Psychiatry: "Natural killer (NK) cells are important in immune function and appear, in part, to be regulated by the CNS (central nervous system). The authors compared NK cell activity and MMPI scores of 111 healthy college students and found weak but statistically significant correlations between NK values and psychopathology for 10 of 12 scales. Students with the highest NK values had a 'healthier' MMPI profile than those with the lowest. Students with high MMPI scores (T greater than 70) had NK values below the sample median. These findings support theories of interaction between mental state and immune status, but the mechanisms and direction of interaction remain largely unexplored." (Heisel, J. Stephen, et al; "Natural Killer Cell Activity and MMPI Scores of a Cohort of College Students," American Journal of Psychiatry, 143:1382, 1986. Also: Bower, B.; "Personality Linked to Immunity," Science News, 130:310, 1986) From Science Frontiers #49, JAN-FEB 1987 . 1987-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 50: Mar-Apr 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects How Cancers Fight Chemotherapy How do cancer cells develop resistance to lethal chemicals? The clues seem to reside in extrachromosomal DNA that carries drug-resistance-conferring genes from one cancer cell to another. Cancer cells dying from chemotherapy may, for example, cast off extrachromosomal DNA that carries information on how to combat the chemicals. Other factors may also be at work, but basically we have only suspicions. (Silberner, Joanne; "Resisting Cancer Chemotherapy," Science News, 131:12, 1987.) Comment. Insects and other organisms also acquire resistance to chemical poisons. Does extrachromosomal DNA play roles in these instances, too? Can Information coded in extrachromosomal DNA be passed from one species to another, say, via insect bites? From Science Frontiers #50, MAR-APR 1987 . 1987-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 45: May-Jun 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Be happy, be healthy: the case for psychoimmunology Hints are accumulating from many clinical studies that one's mental state has much to do with the effectiveness of one's immunological system. Happy, unstressed people get fewer colds. Introverts get worse colds than extroverts. Men who have just lost their wives have lowered white-cell responses. Although many physicians and medical researchers think it too early to claim that mental stress significantly suppresses the human immunological system and thus leads to more illness, one can see the pendulum start to swing away from the timehonored belief that mind and body are entirely separate entities. The foregoing studies and others like them are discussed in a recent survey of psychoimmunology by B. Dixon. Toward the close of the article, Dixon asks why humans (and other animals, too) have evolved an immunological system sensitive to stress. Evolutionists can always find some sort of justification in Darwinian terms, and Dixon's is rather ingenious. Suppose a primitive human was attacked by a saber-toothed tiger (what else?). If the human survived, his immunological system would immediately go into high gear to clean up the wounds and repel invading germs. The trouble is that a revved-up immunological system (especially the white blood cells) can go too far and chomp up healthy tissue, too. However, evolution has constructed animals such that stress (saber-toothed tigers are stressful! ...
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... Muller and D.E . Morris review the evidence tying geomagnetic reversals to the impacts of large bodies with the earth: the tektites and microtektites; the climate changes; the biological extinctions, etc. Then they propose a physical mechanism for geomagnetic reversals: "The impact of a large extraterrestrial object on the Earth can produce a geomagnetic reversal through the following mechanism: dust from the impact crater and soot from fires trigger a climate change and the beginning of a little ice age. The redistribution of water near the equator to ice at high latitudes alters the rotation rate of the crust and mantle of the Earth. If the sea-level change is sufficiently large ( 10 meters) and rapid (in a few hundred years), then the velocity shear in the liquid core disrupts the convective cells that drive the dynamo. The new convective cells that subsequently form distort and tangle the previous field, reducing the dipole component near to zero while increasing the energy in multipole components. Eventually a dipole is rebuilt by dynamo action, and the event is seen either as a geomagnetic reversal or as an excursion." (Muller, Richard A., and Morris, Donald E.; "Geomagnetic Reversals from Impacts on the Earth," Geophysical Research Letters, 13:1177, 1986.) Comment. That the earth's field is generated by internal dynamo action is still a theory, although a widely accepted one. From Science Frontiers #49, JAN-FEB 1987 . 1987-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 47: Sep-Oct 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Brain architecture: beyond genes "The human brain probably contains more than 1014 synapses, and there are simply not enough genes to account for this complexity." .. .. "Neuroscientists at a recent meeting highlighted how extragenetic factors -- including neuronal activity, contact with other cells, radiation, and chemical factors -- influence brain circuitry, especially during development." In computer terms, our brains are constantly reprogramming themselves in response to internal and external forces. (Barnes, Deborah M.; "Brain Architecture: Beyond Genes," Science, 233: 155, 1986.) Comment. Musing in a Lamarckian way, can the brain, as reprogrammed by external influences, ever feed back information to the genes? From Science Frontiers #47, SEP-OCT 1986 . 1986-2000 William R. Corliss ...
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