270 results found.
... Science Frontiers ONLINE No. 27: May-Jun 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A COMPASS IN OUR SINUSES?You may not feel any north-directed nasal twinges, but the thin hard bones lining the human sinuses contain deposits of magnetic ferric iron. This discovery adds man to a long list of organisms from bacteria to birds known to possess localized accumulations of magnetic material. Experiments with these animals, including humans, seem to indicate a widespread ability to detect ambient magnetic fields. Some animals appear to use this sense for navigation. Whether humans do or do not is still a moot question. (Baker, Robin R., et al; "Magnetic Bones in Human Sinuses," Nature, 301: 78, 1983.) From Science Frontiers #27, MAY-JUN 1983 . 1983-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 30: Nov-Dec 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Rock Lake Pyramids Professor James Shertz, of the University of Wisconsin, is trying to get to the bottom of the reputed stone pyramids submerged in Rock Lake, near Lake Mills, Wisconsin. Fishermen have hit the pyramids with their oars when the lake is very low; and others have spotted structures (perhaps as many as four) from the air. In 1937, a diver reported seeing a 29-foot-high pyramid in the murky waters. Recent divers have found boul-der alignments; but the visibility is so poor that organized structures cannot be identified. Truncated earthen pyramids exist at nearby precolumbian Aztalan; and strange rock piles exist elsewhere in Wisconsin. Consequently, one cannot brush off the idea that some edifices were built at Rock Lake when the water was much lower. (Smith, Susan Lampert; "Lake Mills' Lost Pyramids," Wisconsin State Journal, June 26, 1983. Cr. R. Heiden via L. Farish.) Comment. The 1937 dives are described in our Handbook Ancient Man. Perhaps it is relevant that sonar-imaging equip-ment has detailed obviously human-built rock structures on the floor of Loch Ness. Reference. Ancient Man is described here . Rock Lake pyramids drawn from 1937 diving observations. From Science Frontiers #30, NOV-DEC 1983 . 1983-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cancer Even More Insidious A recent advance in cancer research has been the discovery that the development of some cancers is initiated by oncogenes -- genes which have been "switched on" by biological or environmental forces. That humans and other organisms harbor such Trojan Horses is unsettling enough, but it now seems that the development of cancer may require the stepwise cooperation of several different oncogenes. In other words, one oncogene controls the action of another and so on in cascade until the cancer is finally initiated. (Marx, Jean L.; "Cooperation between Oncogenes," Science, 222:602, 1983.) Comment. How and why would such a complex mechanism, without obvious short-term survival value, ever have developed? See "Cancer: The Price for Higher Life," in SF#30. Reference. More on the insidiousness of cancer and related anomalies, see BHH2335 in our Catalog: Biological Anomalies: Humans II. To order, visit: here . From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Hearing Via Acoustic Holograms Humans and the higher primates can locate the source of a sound without turning their ears or heads. Other animals are not so fortunate. Current theories of hearing, according to Hugo Zuccarelli, cannot explain this human capability, which we all take for granted. He has come up with a new theory that pictures our ears as truly remarkable organs. First, our ear itself is a sound emitter. It emits a reference sound that combines with incoming sound to form an interference pattern inside the ear. The nature of this pattern is sensitive to the direction of the incoming sound. Our ear's cochlea detects and analyzes this pattern as if it were an acoustic hologram. The brain then interprets this data and infers the direction of the sound. (Zuccarelli, Hugo; "Ears Hear by Making Sounds," New Scientist, 100:438, 1983.) Comment. We have been able to appreciate this slick biological trick only after we "discovered" holograms. We should wonder if we are missing anything else! Two letters quickly appeared casting doubt on not only Zuccarelli's Theory but his personal scientific capabilities. (Baxter, A.J ., and Kemp, David T.; "Zuccarelli's Theory," New Scientist, 100:606, 1983.) From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The hypothesis of formative causation lives!Rupert Sheldrake's hypothesis has been roundly condemned by many scientists, presumably because it departs so radically from current thinking. Basically, the hypothesis maintains that the forms of things (from crystals to life forms) and the behavior of organisms is influenced by "morphic resonance emanating from past events." Convergent evolution, wherein human eyes closely resemble squid eyes, might well be explained by the hypothesis. Sheldrake has been testing his idea in various ways. One experiment involves the accompanying illustration containing a hidden image. Once the solution of this illustration is learned, it is hard to forget, but few people see the answer right off. The hypothesis of formative causation insists that once one or more persons learn the drawing's secret, the easier it will be for others to see the solution. Actual tests consisted of broadcasting the illustration and its solution (that is, the hidden image) on English television combined with before-and-after checks elsewhere in the world outside TV range. The results strongly supported the hypothesis, for it was far easier for people outside England to identify the hidden images after the broadcast. (Sheldrake, Rupert; "Formative Causation: The Hypothesis Supported," New Scientist, 100:279, 1983.) Comment. With all this prior publicity, the hidden image should pop immediately into the reader's mind. But if it doesn' ...
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... the car, and it felt hot to the touch! Soon, clouds moved in and the display was over. The authors of this article personally investigated this event within a few days of its occurrence. They found the two witnesses obviously very shaken, but believe that the accounts are fresh and unadulterated. Also pertinent is the fact that a large solar flare had just occurred, and intense auroral displays had been predicted. Also, the two women were apparently the only witnesses of this phenomenon. (Swords, Michael D., and Curtis, Edward G.; "Atmospheric Light Show," Pursuit, 16:116, 1983.) Comment. The article also contains the authors' analysis in some depth. Basically, they thought the phenomenon to be auroral with coincidental rainfall containing organic debris. Reference. Many other low-level auroras are described in GLA4 in Lightning, Auroras. This Catalog is described here . From Science Frontiers #34, JUL-AUG 1984 . 1984-2000 William R. Corliss ...
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... in ways that improve their chances. Parasites can change the size, color, and even the behavior of their host. The object is usually to encourage a specific predator to eat the host so the parasite can continue its life cycle. A classic example is the lan-cet fluke which infests ants and then sheep. The problem is that sheep don't normally eat ants, giving the flukes a chance to switch vehicles. So, the innovative flukes somehow force the ants to crawl to the tops of plants and lock themselves there with their jaws. The next hungry sheep that comes along has his meal seasoned with ants. The bulk of the present article deals with thorny-headed worms, which are not as endearing as the lancet flukes. These parasites are merely bags of reproductive organs attached to a thorny probiscus, by which they attach themselves to the intestinal walls of vertebrates. Living in a sea of processed nutrients, the worms don't even have a digestive tract. Part of the life cycle of this parasite is spent in arthropods (insects, crustaceans). As with the lancet fluke, the thorny-headed worm's big challenge is getting the arthropod eaten by a vertebrate. In most instances, it alters the behavior of the arthropod in a way that makes it more conspicuous to the predators. For example, infested pill bugs do not hide from birds, as they normally do, and are snapped up. Infested crustaceans move towards the light where ducks consume them. No one knows how a parasite floating in the body cavity of its host ...
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... line. Recently, though, additional evidence of this civilization was discovered beneath a datable volcanic ash. The new dates for this civilization are 600-1 ,500 BC, putting it about 1,000 years ahead of Maya and Inca achievements. The "digs" show further that this culture was frequently beset by devastating outbursts of volcanic activity, which often rendered large areas of land uninhabitable. Rather than suppressing this remarkable culture, Donald Lathrap, a University of Illinois archeologist, says: "Those disasters pushed people from the region and led to upward leaps in social evolution..." (Anonymous; "Key to a Vanished Empire," San Francisco Chronicle, June 14, 1984. Cr. J. Covey.) Comment. The reaction of this early society of advanced organisms to environmental stress seems a perfect introduction to several items that follow on how cells and other species respond to stresses from without. From Science Frontiers #37, JAN-FEB 1985 . 1985-2000 William R. Corliss ...
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... three sets are very similar and are omitted here. The aerial photo-graphs of the quintuplets are remarkable. Meteorologists describe the circles as being the consequence of a large central whirlwind accompanied by four satellites. There seems to be some aero-dynamic basis for accepting the reality of large vortexes attended by several smaller ones. (Meaden, G.T .; "Whirlwind Spirals in Cereal-Fields: The Quintuplet Formations of 1983," Journal of Meteorology, U.K ., 9:137, 1984. Journal address: 54 Frome Road, Bradford-on-Avon, Wiltshire, BA15 1LD ENGLAND.)) Comment. The regularity of whirlwind circles has prompted some to label them "UFO nests." Desert dust devils and steam devils often exhibit coordinated motion and geometrical organization. See GWW0 in Tornados, Dark Days, Anomalous Precipitation. This book is described here . Some dynamically possible whirlwind patterns. SET 1 conformed to the second pattern. From Science Frontiers #36, NOV-DEC 1984 . 1984-2000 William R. Corliss ...
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... and porpoises actually have acoustic stun guns in their foreheads. First, there are visual observations of fish being hunted by whales and porpoises suddenly giving up flight, becoming passive, and almost asking to be snapped up by their pursuers. Second, the stomachs of whales often contain much faster and more mobile prey -- often without any teeth marks. Finally, bottlenose dolphins are known to have the capability of producing bursts of sound five orders of magnitude more intense than their usual navigating clicks. This is more than enough to kill small fish. (Norris, Kenneth S., and Mohl, Bertel; "Can Odontocetes Debilitate Prey with Sound?" American Naturalist, 122:85, 1983.) Comment. Here is another instance of the "problem of perfection." An existing organ of great complexity seems utterly useless of only fractionally developed. One would think that the complicated sound lenses, the muscular sound-generating tissues, and their containing structures would have to have developed in a single step in order to have any survival value. Reference. Sperm whales also use a stun gun. See BMO10 in our Catalog: Biological Anomalies: Mammals II. For more information, visit: here . From Science Frontiers #29, SEP-OCT 1983 . 1983-2000 William R. Corliss ...
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... which: (1 ) Both heart and respiration rates become irregular; (2 ) The flow of blood to the brain increases 50% over relaxed waking levels; (3 ) Body temperature regulation becomes impaired; and (4 ) Blood flow to the kidneys and urine production drop markedly. REM sleep is thought to be "primitive" from an evolutionary standpoint because body temperature control is "reptilian." Horne also discusses REM and normal sleep in the context of nightmares, sleeptalking, sleepwalking, night terrors, narcolepsy, and sleep paralysis. (Horne, Jim; "The Cinema of the Mind," New Scientist, 95:627, 1982.) Comment. All in all, sleep is a complex phenomenon. We know we need it, but why? A really efficient organism would run 24 hours a day -- like a computer. From Science Frontiers #24, NOV-DEC 1982 . 1982-2000 William R. Corliss ...
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... time, the physical universe, to which conventional science is restricted, is only one portion of existence as a whole, the real 'universe' (a word which means the total of all that exists). This leaves the door wide open for the existence of entities and phenomena outside (that is, independent of) the physical universe, as contended by the various religions and many systems of philosophy." (Larson, Dewey B.; "A Note on Metaphysics," Reciprocity, 12:11, Summer 1983.) Comment. To fully appreciate Larson's distinctions between his Reciprocal System and the conventional views, you must read his Nothing But Motion. His ideas are most interesting. The publication Reciprocity is put out by the International Society of Unified Science. This organizations is composed primarily of scientists interested in Larson's work. From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...
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... , evenly distributed, circular, flashing patches of brilliant blue-white light appeared all around the ship out to a distance of about 150 meters. This system of patches flashed away simultaneously the wheel display. The patches varied from 15-60 cm in diameter, and flashed 114 times per minute. When an Aldis lamp played steadily on the patches, nothing happened. When the lamp was flashed, the whole array of flashing patches disappeared, only to reappear in about 2 minutes. Each patch seemed to consist of worm-like segments 2 cm long, 2 cm apart. The worms were all aligned perpendicular to a vector from the ship. In contrast to the bands and wheels, the worms were located about 5 cm below the surface of the water. Water samples revealed no luminous organisms -- only a few animals a few millimeters long. The sea was calm, visibility excellent, although atmospheric electrical activity could be seen all around. (Kuzmanov, Zoran; "Phosphorescence in the China Sea," Marine Observer, 53:85, 1983.) Comment. The luminous "worms" resemble the spinning crescents sometimes associated with radar. For more, see Chapter GLW in Lightning, Auroras. To order this Catalog, visit: here . Flashing patches of worm-like shapes. A later phase of thed display. From Science Frontiers #32, MAR-APR 1984 . 1984-2000 William R. Corliss ...
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... work? Obviously, this is a very controversial question. Admittedly, little real scientific research has been done on imaging per se -- it is a bit too radical a concept. But a few scientists are beginning to chart the chemistry and information flow in the mind-body relationship. For example, the death of a spouse has long been associated with the increased mortality of the surviving spouse. Clinical studies of bereaved spouses reveal fewer circulating lymphocytes, which help the body fight disease, and significantly higher levels of cortisol, a substance that suppresses the immune system's response to disease. Although it is very early in the game, there are verifiable correlations between state-of-mind and body chemistry. Further, other researchers have found that there are sympathetic nerve terminals in such organs as the spleen and lymph nodes, both of which play important parts in defending the body. Imaging just might send the right signals through these terminals, while depression might tend to shut the defense system down. (Hammer, Signe; "The Mind as Healer," Science Digest, 92:47, 1984.) Comment. Imaging is only the latest psychological device humans have tried in fighting disease and promoting health. History is full of such ploys. From Science Frontiers #33, MAY-JUN 1984 . 1984-2000 William R. Corliss ...
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... Project Sourcebook Subjects Why cancer?" However, the most formidable obstacle to the successful treatment of disseminated cancer may well be the fact that the cells of a tumor are biologically heterogeneous. This phenotypic diversity, which allows selected variants to develop from the primary tumor, means not only that primary tumors and metastases can differ in their responses to treatment but also that individual metastases differ from one another. This diversity can be generated rapidly even when the tumors originate from a single transformed cell." (Fidler, Isaiah J., and Hart, Ian R.; "Biological Diversity in Metastatic Neoplasma: Origins and Implications," Science, 217:998, 1982.) Comment. The ability of single cancer cells to multiply into different kinds of cells, as well as propagate throughout an organism, seems to betoken an insidious biological entity, whose origin and purpose (? ) we have hardly begun to comprehend. How could cancer have evolved if it leaves no progeny? How could natural selection leave us so susceptible to cancer? Reference. The many enigmas of cancer are covered in categories BHH23-35 in our Catalog: Biological Anomalies: Humans II. For information on this book, visit: here . From Science Frontiers #24, NOV-DEC 1982 . 1982-2000 William R. Corliss ...
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... growth has been followed on a cell-bycell basis from egg to adult. The history of each cell is known from birth to death. The fact that C.elegans is nicely transparent helps the cell-watcher. Here are some of the interesting things to be seen as cells proliferate, live, and die. First, C. elegans is bilaterally symmetrical, but the pattern of cell generation on the right differs from that on the left. Nevertheless, the creature ends up symmetrical, making one wonder where the directions for symmetry come from. Some cells are transients, dying when their jobs are done. A few doomed cells are generated only because they produce sister cells that are needed in the final animal. Such a programmed loss of cells may be a method of modifying an organism during evolution. John Sulston, one of the researchers, says, "Within the lineage you can see the fossil of its past." (Marx, Jean L.; "Caenorhabditis Elegans: Getting to Know You," Science, 225:40, 1984.) Comment. Sulston's statement reminds one of "Ontogeny recapitulates phylogeny," which we thought had been discredited long ago. From Science Frontiers #35, SEP-OCT 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Early Life And Magnetism The tiny granules of magnetite found in magnetized sediments come in various crystalline forms. Inorganic magnetite precipitated from molten rock is octahedral, while the particles manufactured by bacteria are cubes, hexagonal prisms, or noncrystalline teardrops. The magnetite found in marine sediments appears to be organically formed -- at least the shapes of the particles are characteristic of bacterial manufacture. Apparently these industrious bacteria have been busy producing magnetite ever since "lowly" life forms appeared in the Precambrian. These facts pose at least four questions: How much of the earth's iron ore has been concentrated biologically and is there a connection with the Gaia Hypothesis? Is it possible that magnetic field reversals, now believed to be of purely geophysical origin, might be biological artifacts (that is, due to population and/ or species changes of magnetic bacteria)? If magnetic field reversals are of geophysical origin, how do the magnetic bacteria find their food sources during the long periods of near-zero field? Lab experiments prove that magnetic bacteria require free oxygen to secrete magnetite, but the Precambrian atmosphere and oceans were supposedly devoid of oxygen until 2.3 billion years ago. How did the magnetic bacteria prosper before then? (Simon, C.; "Tiniest Fossils May Record Magnetic Field," Science News, 124:308, 1983.) From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. ...
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... , are those that flit through the trees well below the crest. These lights are extremely rare. Typically, they commence as a brilliant blue-white or yellow light, which tapers off to dull red before disappearing, all in 2-10 seconds. Horizontal motion is often only a degree or so, although some older reports have the lights wandering greater distances at speeds faster than a human could manage in the difficult terrain. In an experiment to determine whether the "true" Brown Mountain lights might be seismic in origin, ORION detonated small charges on Brown Mountain in July 1981. No artificially stimulated lights were recorded. (Frizzell, Michael A.; "Investigating the Brown Mountain Lights," INFO Journal, 9:22, January/February 1984. INFO = International Fortean Organization.) Reference. The Brown Mountain lights are classified under GLN1 with other "nocturnal lights." This category appears in our Catalog: Lightning, Auroras. To order, see: here . From Science Frontiers #33, MAY-JUN 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 11: Summer 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Hierarchies Of Evolution All organisms from man to mouse to amoeba are merely DNA's way of manufacturing still more DNA -- so goes the modern ramification of molecular biology and the Genetic Code. In other words, DNA and genes are selfish, and ultimate parasites, directing the evolution of life only to maximize the production of DNA. This theme is not the subject of this paper by Doolittle and Sapienza. Rather, they wonder about those nonsense DNA sequences that do not code for protein. The presence of these "useless" bits of genetic material is often explained in terms of gene "expression." Emphasis is always on maximizing the "fitness" of the organism (phenotype). Perhaps this seemingly excess genetic material actually maximizes the fitness (survivability) of the DNA itself. Evolution thus occurs at DNA and gene (genome) levels, despite what transpires at the organism (phenotype) level. (Doolittle, W. Ford, and Sapienza, Carmen; "Selfish Genes, the Phenotype Paradigm and Genome Evolution," Nature, 284:601, 1980.) Comment. We know that mitochondria and chloroplasts have their own genetic material; evolution may be occurring at this level, too, independent of pressures for change on the organisms. Waxing speculative, may there not be other hierarchies where systems are trying to maximize their own survivability, even at molecular, atomic, and subatomic levels? Don't laugh! ...
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... Science Frontiers ONLINE No. 7: June 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Moon And Life There are so many examples of lunar rhythms in terrestrial life that we tend to assume that these phenomena are understood. Obviously, evolution "created" these rhythms to further the cause of each moon-tuned organism. Palmer and Goodenough recount the classic example of the lunar synchronism of the palolo worm and add the even-more-amazing tale of P. megalops, another marine worm. Sure enough, the moon-modulated matings of these worms seem to improve reproductive efficiency. Less well known are many other moon-synchronous biological rhythms; viz., the sizes of the pits dug by ant lions to trap ants and the angles flatworms assume in swimming away from light. Many such lunar rhythms apparently have no adaptive value whatsoever. So, why do they exist? Even more disconcerting is the fact that lunar rhythms persist in the lab where the moon is not visible. Are internal clocks responsible here? If so, how do they work and how are they set? These questions are hard to answer if the rhythms have no value to the organism's success. (Palmer, John D., and Goodenough, Judith E.; "Mysterious Monthly Rhythms," Natural History, 87:64, December 1978.) Comment. It would, or course, be outright heresy to suggest that heavenly bodies may be the sources of unrecognized but biologically significant forces. Reference. Correlations of lunar phase ...
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... Science Frontiers ONLINE No. 15: Spring 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Evolutionary Struggle Within Ted Steele, an immunologist, has come up with experimental evidence showing in some cases that acquired immunity may be transmitted to progeny. When Steele's research was announced, many scientists and science writers rushed to the defense of Darwinism. They pointed out with unseeming vigor that a revival of dread Lamarckism or the Inheritance of Acquired Characters was not indicated. It is true that Steele has proposed a Darwinian interpretation of his findings, but his theory adds a startling new dimension to the development of life. In essence, Steele asserts that an organism's immunological system is really the evolutionary scenario in miniature and compressed in time. The body's immuno-logical system is trying to cope with up to 10 million defensive cells. The only defensive cells that survive and multiply are those that happen to encounter an invader that they can lock onto and destroy. The "fittest" defensive cells are those that have just the right characteristics to knock off invaders, and only they survive permanently in the body's defensive arsenal, giving it acquired immunity. The Lamarckian part of this story occurs when the RNA of the selected defensive cells gets passed on to the organism's progeny. (Tudge, Colin; "Lamarck Lives -- In the Immune System," New Scientist, 89:483, 1981.) Comment. The picture evolving here is one of a hierarchy of evolutionary struggles -- say, ...
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... Science Frontiers ONLINE No. 8: Fall 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Importance Of Nonsense One of the greatest surprises of modern molecular biology has been the discovery of "split genes" in higher forms of life. In the chromosomes of lowly bacteria, genes march along one behind the other, but in more complex organisms the genes are separated by segments of genetic material that apparently have nothing to do with the manufacture of protein. Because there seems no need for these inserted jumbles of genetic information, they are characterized as "nonsense." But evolutionists insist that this nonsense must have some survival value or it wouldn't be there! Present speculation is that the nonsense segments separate mini-genes that contain the blueprints for assembling well-defined parts of proteins that possess specific functions. To illustrate, the main part of the immunoglobulin molecule has four functional parts (one for interacting with cell membranes, another that functions as a hinge, and so on). Lo and behold, the immunoglobulin gene consists of four mini-genes separated by three segments of nonsense. The suspicion is that the evolution of higher life forms has been accelerated by keeping these prefabricated, functionally oriented mini-genes apart and shuffling them as integral units. The shuffling of entire functional elements rather than smaller bits and pieces of genetic information might speed up organic evolution. (Lewin, Roger; "Why Split Genes?" New Scientist, 82:452, 1979.) From Science Frontiers #8 , Fall 1979 . ...
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... Science Frontiers ONLINE No. 13: Winter 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Alien Presence Hidden behind an obscure technical title is a most curious discovery. I.C . Eperon and his coworkers at the MRC Laboratory of Molecular Biology, England, have shown that "human mitochondria did not originate from recognizable relatives of present day organisms." The authors go even further, describing human mitochondria as a "radical departure." (Eperon, I.C ., et al; "Distinctive Sequence of Human Mitochondrial Ribosomal RNA Genes," Nature, 286:460, 1980.) Comment. The inferences above may be far-reaching. Mitochondria are vital components in the cells of the so-called higher organisms. Apparently possessing their own genetic material, they are suspected of being descendants of an cient bacteria that invaded and took up residence in cells. If human mitochondria are radically different, could changes in mitochondria be the source of the purported wide gap between humans and other animals? Did the mitochondria change (" evolve") in existing ancient mammals, converting them suddenly into humans? Or did a new "species" of mitochondria infect terrestrial cells, perhaps coming to earth on cosmic debris, as Fred Hoyle has suggested? From Science Frontiers #13, Winter 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 23: Sep-Oct 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Short-circuiting heredity Genes, those carriers of heredity, have turned out to be great gadabouts. Not only do they jump about within a species, but also between species, especially the simple prokaryotic organisms, such as bacteria. It is now well accepted that genes flow between different species of bacteria in physical contact, thus stirring the evolutionary pot. Until recently, scientists believed that the higher organisms, the eukaryotic species, including you and me, did not indulge in such "horizontal" traffic between species. But a few cases have now been found, one involving humans and a microorganism associated with tumors. And the search is just beginning, as biologists look for something they never thought of looking for before. (Lewin, Roger; "Can Genes Jump between Eukaryotic Species?" Science, 217:42, 1982.) Comment. This apparent short-circuiting of classical heredity channels supports the radical notion that evolutionary blueprints may be transmitted between divergent species. In the long view, may-be we should not malign viruses, germs, and biting insects! From Science Frontiers #23, SEP-OCT 1982 . 1982-2000 William R. Corliss ...
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... Since we can detect neither kind of colonist, we must be the first and only intelligent civilization. Essentially Tipler was criticizing the prevailing notion that, from a statistical point of view, there must be many other civilizations among the numberless stars and galaxies. Tipler's thoughts evoked a richly provocative group of letters, some of which were published in the March 1982 issue of Physics Today along with a closely related article by Ornstein. Ornstein tackled the problem of estimating the probability that intelligent life would evolve on other planets from a biologist's perspective. Whereas some physical scientists have set this probability at about 1.0 , Ornstein inclines toward 10-9 , believing that intelligent life is probably unique to the earth. But concludes Ornstein, the 15 separate developments of eyes among disparate terrestrial organisms may infer some unrecognized directing factor in evolution that would force him to revise his estimate upwards drastically. On the other hand, those 15 eyes might indicate a common, but still undiscovered, eye-possessing ancestor far back along evolution's track. The fossil record might be mute on this matter because eyes are soft tissues that are rarely preserved or perhaps because many eyes were jettisoned because the organisms didn't need them, as cave dwellers are wont to do with surprising rapidity. Some of the letters responding to Tipler questioned whether an intelligent civilization would be stupid enough to build self-reproducing von Neumann machines for galactic exploration. Wouldn't it be far more fun to go in person rather than by proxy? And, some pointed out, von Neumann machines would be ...
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... Mars From the media standpoint -- and therefore that of most people -- the Viking Martian biological experiments were uncompromisingly negative. However, R. Lewis points out that this is simple not so. The labelled-release experiments on both landers produced positive results every time a nutrient was added to fresh Martian soil. (The nutrient was tagged with carbon-14, and radioactive carbon dioxide always evolved, suggesting biological metabolism.) Further, the soil samples, when sterilized by heat, gave uniformly negative results. On earth. such repeatable experiments would be considered strong evidence that life existed in the samples. The reason the Viking experiments were described as "negative" is that the other two life detection experiments produced negative or equivocal results. The gas chromatograph, for example, detected no organic molecules in the Martian soil; and it is difficult to conceive of life without organic molecules. At first, most scientists preferred to explain the ambiguous life-detection-experiment results in terms of strange extraterrestrial chemistry. Nevertheless, strange extraterrestrial life would explain the data equally well. Everyone should be aware that the Viking biology team still considers life on Mars as a real possibility. (Lewis, Richard; "Yes. There Is Life on Mars," New Scientist, 80:106, 1978.) Comment. Most research into the possibility of extraterrestrial life assume "life-as-we-know-it." For more information on the Viking experiments, read entry AME14 in our Catalog: The Moon and the Planets. Ordering information here . From Science Frontiers # ...
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... Science Frontiers ONLINE No. 18: Nov-Dec 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Or did it drift in from without?Hoyle and Wickramasinghe conceive the cosmos as a seething retort of energy, gases, dust, and, most significantly, organic molecules and microbes. The space between the stars is more important than the stars themselves, for this thin soup is, in their view, the real "swamp" where life originated! The main evidence supporting their radical hypothesis consists of spectrograms, particularly in the infrared, which are difficult to account for on an inorganic basis, but which are fitted nicely by some organic materials, especially microbes. Hole and Wickramasinghe devote most of the present article to making a spectroscopic case for their theory, but near the end they shake the Temple of Science a bit: "Precious little in the way of biochemical evolution could have happened on the earth. It is easy to show that the two thousand or so enzymes that span the whole of life could not have evolved on the Earth. If one counts the number of trial assemblies of amino acids that are needed to give rise to the enzymes, the probability of their discovery by random shufflings turns out to be less than 1 in 1040000." They conclude that the genes that control the development of terrestrial life must have evolved on a cosmic scale, where there has been more time and much more room for shufflings. (Hoyle, Fred, and Wickramasinghe, Chandra; "Where Microbes Boldly Went," New ...
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... Science Frontiers ONLINE No. 22: Jul-Aug 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Nomads Within Us It was originally believed that human chromosomes were fixed at conception and all subsequent organic development proceeded from the instructions encoded on them. Biologists have recently discovered that genes grasshopper about, constantly modifying genetic instructions -- at least that's the current thinking. Additional modification of genetic instructions seems to be accomplished by entities called "nomads" or "mobile dispersed genetic elements." One type of nomad is a simple ring of DNA called a plasmid. Plasmids seem to be identical to a kind of virus called a retrovirus, which can penetrate into cells and tamper with gene expression; that is, the way genetic instructions are interpreted. Plasmids have been discovered in maize, fruit flies, bacteria, and, now, humans -- and healthy people at that. No one is quite sure what these plasmids do. Even though they look like retroviruses, they may not be associated with illness, but rather help organisms adapt to changing environments. But no one really knows. (Anonymous; "Human Wandering Genes Can Live on Their Own," New Scientist, 94:18, 1982.) Comment. So, the human body is not only beset by new genetic instructions and the static introduced by invading viruses and other disease agents, but it has an indigenous population of nomads continually fiddling with our cells' genetic instructions. Our bodies seem more like Grand Central Station with trains loaded with new biological ...
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... Science Frontiers ONLINE No. 12: Fall 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Currents Of Life Danny Brower and Richard McIntosh of the University of Colorado at Boulder have discovered that growing cells apparently generate electrical fields that control the shapes of living organisms. They have been experimenting with a disc-shaped alga with a lobed edge. Normally the algo reproduces by splitting in half, with each half regenerating the lost half. Nicely symmetric discs are manufactured. But if an external electrical field (about 14 volts/cm) is applied across the nutrient medium, the regeneration geometry is distorted. The experimenters surmise that the membrane chemistry is affected by the external field which augments or reduces cell-created electric fields. (Anonymous; "Electric Charges May Shape Living Tissue," New Scientist, 86:245, 1980.) Comment. Natural external electric fields, such as the atmospheric potential gradient, may therefore have some biological effects, as some experiments with electricity and plant growth have proven. From Science Frontiers #12, Fall 1980 . 1980-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 16: Summer 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Blebs And Ruffles Single cells taken from multicellular organisms tend to inch along like independent amoebas -- almost as if they were looking for companionship or trying to fulfill some destiny. This surprising vo-lition of isolated cells becomes an even more remarkable property when the individual cells are fragmented. Guenter Albrecht-Buehler, at Cold Spring Harbor Laboratory, has found that even tiny cell fragments, perhaps just a couple percent of the whole cell, will tend to move about. They develop blebs (bubbles) or ruffles and extend questing filopodia. They have all the migra tory urges of the single cells but cannot pull it off. Cell fragments will bleb or ruffle, but not both. Why? Where are they trying to go? (Anonymous; "The Blebs and Ruffles of Cellular Fortune," New Scientist, 90:87, 1981.) From Science Frontiers #16, Summer 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 18: Nov-Dec 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Giant Thunderstorm Clusters Conventional wisdom has it that thunderstorms are small-scale phenomena 50100 miles across. However, J.M . Fritsch and R.A . Maddox of NOAA have announced that satellite photos show a radically different situation. The more violent thundersotrms are often organized into roughly circular clusters that may span 1000 miles. Previously, all thunderstorms were considered local convective storms that were regulated by upper air patterns. This view must now be changed because the newly recognized giant thunderstorm clusters actually modify planetary upper air flow. (Bardwell, Steven; "Satellite Data Show New Class of Thunderstorms," Fusion Magazine, p. 50, September 1981.) Comment. In SF#17, cosmic rays were shown to contribute to thunderstorm generation. Now it seems that cosmic rays may affect weather on a planetary scale. From Science Frontiers #18, NOV-DEC 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 20: Mar-Apr 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Subterranean petroleum factories?Sediment samples dredged up from the bottom of the Gulf of California near some hydrothermal vents contain petroleum similar in some ways to commercial petroleum. Apparently organic matter in the vicinity of the vent is thermally converted into oil, or at least something that, like wine, matures into something useful. (Simoneit, Bernd R.T ., and Lonsdale, Peter F.; "Hydrothermal Petroleum in Mineralized Mounds at the Seabed of Guayman Basin," Nature, 295:198, 1982.) Comment. The recently discovered hydrothermal vents are only the external manifestations of what must be extensive chemical factories beneath the crust. The rich assemblages of thermosynthetic life (not photosynthetic life) around the vents makes one speculate about what might be transpiring chemically and biologically in the hot, fluid-saturated crevices and pores of the earth's crust. Carbon dating of petroleum sometimes yields absurdly young ages. Could it be that all the natural gas and petroleum we could ever need is now being manufactured for us subterraneanly ? The Gaia hypothesis would lead us to expect just such a process. After all, humankind requires abundant fuel if it is to carry earth life out into the reaches of space! From Science Frontiers #20, MAR-APR 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 21: May-Jun 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Artificial Panspermia On The Moon A colony of earth bacteria, Streptococcus mitis, apparently survived on the moon's surface between April 1967 and November 1969. The organisms were discovered in a piece of insulating foam in the TV camera retrieved from Surveyor 3 by Apollo astronauts. (Anonymous; Science Digest, 90:19, April 1982.) From Science Frontiers #21, MAY-JUN 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 23: Sep-Oct 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Remarkable Engineering Design In Nature Two unusual examples of inspired design in nature have been described recently: (1 ) The swordfish possesses special tissues rich in mitochrondria and cytochrome-c that generate heat for the animal's eye and brain. Not only do these heating elements keep the swordfish eye and brain significantly warmer than the surrounding water but they also keep these organs warm and thus more effective during deep dives into the cold ocean depths. (Carey, Francis G.; "A Brain Heater in the Swordfish," Science, 216:1327, 1982.) (2 ) Plants, it seems, developed light pipes long before humans. Certain plant tissues (etiolated or dark-grown) act as multiple bundles of optical fibers and coherently transfer light over distances of at least 2 cm. Optical tests show that these natural light pipes are much more effective transmitters of light than media that simply scatter light. This unsuspected sophistication of Nature's design may require significant revisions in photobiology, which did not allow for such ingenuity. (Smith , Harry; "Light-Piping by Plant Tissues," Nature, 298:423, 1982.) Comment. Since some plants are known to emit light, we would not be surprised, the way things are going, to learn of natural plant lasers! From Science Frontiers #23, SEP-OCT 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 22: Jul-Aug 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bowerbird art for art's sake The bowerbirds of New Guinea and Australia build and decorate marvelously intricate and esthetic works of art. One must classify these impressive structures as works of art, even by human standards. For example, the bowers have geometrical organization and may be oriented to a specific compass direction, depending upon the species. Colorful berries, stones, and, when available, human artifacts are systematically arranged around the bower. Some bowerbirds even take a piece of bark in their bills and paint their bowers with colored berry juices. Each species has a certain style, but the bowers vary from individual to individual and with the age of the bird. Manifestly, these birds use tools for artistic purposes. Or do they? Is it all instinct? Some animal behaviorists believe the bower's purpose is to attract mates, but the males often chase females away, although mating does eventually occur within the bowers. A second explanation is that the bowers symbolize territorial rights. In this context, bowerbirds fre-quently raid and destroy neighboring bowers, stealing choice decorations -- all very human-like behavior. (Diamond, Jared M.; "Evolution of Bowerbirds' Bowers: Animal Origins of the Esthetic Sense," Nature, 297:99, 1982.) Comment. Is human art any more profound than that of the bowerbirds? Human artists doubtless feel they are doing something more than attracting mates or ...
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... or fire or smoke, but apparently of aqueous vapour,' which travelled with immense force across the valley (approximately 12 m wide). Within minutes another discharge from higher up the cliff and then 'several ones with crackling sounds producing semi-transparent wavy streaks in the air, not smokey in appearance.' Next came a very loud explosion which 'we had the good fortune to see plainly.' Wardle describes this as 'like a gun but with crackling, a series of continuous reports, cleaving the air in a zigzag or riverlike course in a narrow band about 15 cm to 20 cm broad, of bluish colour." Several other reliable descriptions exist of detonations and flame-like discharges around old Hannah's Cave. The supposition is that natural gases liberated by decaying organic material and, perhaps, geochemical reactions are ignited by static electricity. A recent landslip seems to have extinguished this curious phenomenon. (Pounder, Colin; "Speculations on Natural Explosions at Old Hannah's Cave, Staffordshire, England," National Speleological Society, Bulletin, 44:11, 1982.) Comment. No one should overlook the similarity between Old Hannah's activity and the will-o '- the-wisps, earthquake lights, the Barisal Guns, mistpouffers, the Moodus Sounds, and other sound and light phenomena. See our Catalog Earthquakes, Tides, Unidentified Sounds. This volume is described here . From Science Frontiers #22, JUL-AUG 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 4: July 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bioluminescence And Spurious Radar Echoes March 18, 1977. North Atlantic. Throughout the day, spurious echoes had been appearing on the radar screen aboard the m.v . Ebani. Resembling the echoes from small clusters of fishing boats, they would close to within 5 nautical miles and then disappear. At 2200, echoes appeared, closed to within 5.5 nautical miles, and then spread out around the ship in a circle, all the while maintaining a 5-mile range. At this time, the entire sea took on a milky appearance and a fishy smell was dected. The beam from an Aldis lamp revealed luminescent organisms in the sea. After 45 minutes, both milky sea and spurious radar echoes disappeared together. (Richards, A.W .; "Radar Echoes and Bioluminescence," Marine Observer, 48: 20, 1978.) Comment. Why should radar echoes and bioluminescence be connected? Does the "fishy smell" imply that the milky sea released something into the atmosphere that created a radar target? Other bioluminescent phenomena, including the famous "light wheels" are catalogued in Section GLW in Lightning, Auroras, Nocturnal Lights. For more information on this book, visit: here . From Science Frontiers #4 , July 1978 . 1978-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 84: Nov-Dec 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects THE "AMERICA BEFORE COLUMBUS" CONFERENCE Tennessee Bat Creek stone with supposed Hebrew characters Last summer, the New England Antiquities Research Association (NEARA) organized a meeting of off-mainstream archeologists at Brown University. As readers of Science Frontiers have long been aware, the New World was not new to many ancient voyagers. A review of the Conference in the New York Times gave wide exposure to some of these controverted pre-Columbian contacts: 5000-year-old pottery found in coastal Peru bears an uncanny resemblance to pottery made in Japan during the same period. How could the Japanese have reached Peru circa 3000 BC? Easy! Storms could have blown fishermen into the trans-Pacific current. (See "Current Treads" item under GEOPHYSICS.) The Zuni Indians of New Mexico may have been influenced by Japanese voyagers in the Thirteenth Century, as suggested by their distinctive blood chemistry, language, and culture. 700-year-old temple art from India reveals detailed depictions of ears of corn, which was supposedly unknown outside the Americas until after Columbus. Jewish refugees from the Roman Empire may have somehow reached eastern Tennessee, if the famous Bat Creek Stone really bears an ancient Hebrew inscription. The grave in which the stone was found has been carbon-dated between 32 and 769 AD. (Wilford, John Noble; "Case for Other Pre-Columbian Voyagers," New York Times , July 7, 1992 ...
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... history of life. A recent issue of Science presents the results of an analysis of the ups and downs of 20,000 marine genera -- that is, percent extinctions over a period of 600 million years, as revealed by the fossil record. The graph of ten groups of 1000 genera shows at least two things: (1 ) strong hints of periodicity; and (2 ) suggestions that extinctions, whatever they really are, "cut across functional, physiological, and ecological lines." The plotters of these graphs, D. Raup and G. Boyajian, claim that whatever the mechanism, "major pulses of extinction result from geographically pervasive environmental disturbances." What besides powerful, external physical forces (read "comets and asteroids") could affect such wide ranges of marine organisms? (Lewin, Roger; "Pattern and Process in Extinctions," Science, 241:26, 1988.) Comment . This all sounds so reasonable that one must wonder why it is given space in Science Frontier. The reason is that we have a suspicion that it is all too easy, too simplistic. Could something more subtle be at work? After all, we really know next to nothing about the real workings of life-as-a -whole, its ups and downs. It is so easy to say that a group of organisms was done in by a temperature change or the fall of acid rain brought on by the impact of an asteroid. We always look for external forces, whereas the real cause of "crises" in the history of life ...
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... Science Frontiers ONLINE No. 156: Nov - Dec 2004 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Hot-desert frozen desserts Were Europe's magnificent cave paintings actually rendered by those brutish Neanderthals? Astronomy Flying blankets threaten satellite Francis filament is too long Biology "We are all mutants" Limboids Organizers on the chicken-coop floor Unexplained Exodus Psychic birds Geology Why is the Earth so wet? The Vitim bolide event Geophysics Infrared Foo Fighters? Spray devils off Cyprus Psychology Total-Zombies and cinematographic vision Physics Errant beach sand 20-degrees: the magic angle in stone-skipping ...
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... Science Frontiers ONLINE No. 115: Jan-Feb 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Why did life take a left turn?Life-as-we-know-it is left-handed; that is, our amino acid molecules are levorotatory rather than the mirror-image dextrorotatory versions. Because humans "expect" symmetry in nature, it is taken for granted that everything else in the universe is split equally between leftand right-handed molecules. Earth life is just a fluke -- or is it? On September 28, 1969, organic-rich stones fell in Victoria, Australia. This was the Murchison meteorite, and it may carry a message. Over a decade ago, M.H . Engel and B. Nagy reported that the organic molecules in the Murchison meteorite were not split 50:50 between left- and right-handed versions. So contrary to expectations was this finding that most scientists assumed that the analysis was contaminated by terrestrial organic molecules. Now, M.H . Engel and S.A . Macko have refined the analytical techniques and apparently avoided any taint of contamination. Their conclusion: the Murchison amino acids still lean to the left. From all this arise several intriguing possibilities: Life on earth started split evenly between left- and right-handed amino acids, but was nudged to the left by the influx of organic-laden meteorites like the Murchison. Terrestrial life actually originated elsewhere in the universe where much matter is left-handed, including life, if ...
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... Science Frontiers ONLINE No. 115: Jan-Feb 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A SUBMARINE ORGAN?Exactly two years ago, we reported on strange seismic signals detected by German geophysicists near Mount Semeru, in Java. These signals consisted of a fundamental tone and evenly spaced harmonics. Sometimes, the fundamental tone rose and fell. This "natural trombone" was thought to be a gas-filled subterranean cavity capped at the top by rock, with a pool of magma at the bottom. Volcanic vibrations resonated in this chamber. As the magma pool rose and fell, the fundamental tone changed. More recently, a network of seismic stations in French Polynesia has picked up more mysterious seismic signals. These differ from those in Java in that each fundamental tone is "pure"; that is, there are no harmonics. Dubbed "T -waves," the sounds originated from an active volcanic ridge in the South Pacific. Suspicion fell on one flat-topped volcano that rose to within 130 meters of the ocean surface. But, how could this peak generate such a pure tone? The theory is that the active volcano spews out a column of steam bubbles bounded at the bottom by the flat volcano and by the ocean at the top. Computer simulations proved that sound could resonate in a column of bubbles just as it does in an organ pipe. Since the height of the column remains fixed, so does the fundamental tone. Certainly harmonics are generated, too, but the bubbles damp out the ...
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... Science Frontiers ONLINE No. 107: Sep-Oct 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Organ Music Your doctor is understandably concerned if he finds your heartbeat is irregular. But it turns out that the healthy heart does not beat steadily and precisely like a metronome. In fact, the intervals between normal heartbeats vary in a curious fashion: in a simple, direct way, they can be converted to musical notes. When these notes (derived from heartbeat intervals) are heard, the sound is pleasant and intriguing to the ear -- almost music -- and certainly far from being random noise. In fact, a new CD entitled: Heartsongs: Musical Mappings of the Heartbeat , by Z. Davis, records the "music" derived from the digital tape recordings of the heartbeats of 15 people. Recording venue: Harvard Medical School's Beth Israel Hospital! This whole business raises some "interesting" speculations for R.M . May. "We could equally have ended up with boring sameness, or even dissonant jangle. The authors speculate that musical composition may involve, to some degree, 'the recreation by the mind of the body's own naturally complex rhythms and frequencies. Perhaps what the ear and the brain perceive as pleasing or interesting are variations in pitch that resonate with or replicate the body's own complex (fractal) variability and scaling.'" (May, Robert M.; "Now That's What You Call Chamber Music," Nature, 381:659 ...
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... Chromosome Choreography Every biology student has seen sketches of the "dance of the chromosomes" that is performed when eukaryote (nucleuscontaining) cells divide. Because chromosomes are composed of genes and their DNA -- the information carriers of inheritance -- it reasonable to suppose that they are the "dance-masters." This expectation is enhanced if one holds that the genes are "selfish;" that is, they have their own evolutionary agendas, and all life forms exist only to execute their "will." But cell division would not occur at all without the action of the cell's bipolar spindle. This spindle is composed of microtubules -- rods of the protein "tubulin." Somehow , when cells are about to divide, they synthesize these microtubules, which then seem to organize themselves into orderly arrays (the bipolar spindles). Then, the microtubules sort out and separate the two sets of chromosomes required for the two new cells. So, far, our description conforms to what biologists have known and accepted for decades; but there is something more mysterious going on. In 1996, researchers discovered that they can actually substitute DNAcovered beads for the chromosomes, and the microtubules will still go through the motions of sorting and separating the chromosome-less strands. Actually, the microtubules will perform their act even without the DNA-covered beads. In a sense, the bipolar spindle is a puppetmaster, and the microtubules are the strings. The puppet show can go on without the puppets (chromosomes). (Hyams, Jeremy; "Look Ma, No Chromosomes ...
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... Science Frontiers ONLINE No. 108: Nov-Dec 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Life Forms In Meteorites?Few could have escaped the recent gushy press coverage of NASA's announcement that an Antarctic meteorite, possibly of Martian origin, seems to have carried vestiges of life forms from that planet to ours. No need to recapitulate all that hype. What we do add is the observation that this same sort of excitement has swept through the scientific community at least twice before. Back in 1961, B. Nagy et al discovered tiny particles resembling fossil algae in carbonaceous chondrites. They called these particles "organized elements." Ultimately, these curious particles were explained as natural crystals and terrestrial contaminants. (Ref 1.) Much earlier, in 1881, Hahn, an eminent German geologist, asserted that he had examined thin sections cut from chondrites and found fossils of sponges, corals, and crinoids. In fact, the extraterrestrial coral that Hahn found even received the scientific name Hahnia meteoritica ! In the end, though, Hahn's meteoric life forms met the same fate as the "organized elements" of Nagy et al. (Ref. 2) Ref. 1. Urey, Harold C.; "Biological Materials in Meteorites: A Review," Science, 151:157, 1966. Ref. 2. Bingham, Francis; "The Discovery of Organic Remains in Meteoritic Stones," Popular Science Monthly , 20:83, 1881. Both references can be found in our Handbook Mysterious ...
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... Science Frontiers ONLINE No. 110: Mar-Apr 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Martian Life: Act Ii The final issue of New Scientist for 1996 carried an article entitled "Death Knell for Martian Life." Was all that media hype for naught? What will NASA do now? Wait! Another putative Martian rock may save the day. Picked up in Antarctica in 1974, meteorite EETA 79001 weighs 7.9 kilograms and is superficially unimpressive. Inside, though, researchers I.P . Wright and C.T . Pillinger found a surprising quantity of organic compounds -- actually 1.5 parts per thousand by mass. This fraction is so large that terrestrial contamination seems remote. Furthermore, the organic component contains 4% more carbon-12 (relative to carbon-13) than the adjacent carbonate minerals. This is strong evidence that the organics had a biological origin. Similar tests on the media-hyped Martian meteorite ALH 84001 yielded the same carbon ratios. Pillinger remarked: "These results offer the strongest support yet for the hypothesis that life once existed on the planet." So far so good, but EETA 79001 conveys two additional facts -- both very tantalizing: (1 ) This meteorite was blasted off the Martian surface only about 500,000 years ago; and (2 ) It probably came from a different hemisphere than ALH 84001. From all this, a somewhat shaky conclusion: Life on Mars existed not only recently (and perhaps is still present) but was ( ...
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... Science Frontiers ONLINE No. 111: May-Jun 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Life On Different Scales In SF#110, we introduced the possibility of nannobacteria: life forms that are smaller than 0.4 micron, perhaps even as small as 0.01 micron. Nannobacteria are not completely accepted as bona fide organisms. However, electron microscopes are imaging "somethings" that are very tiny and ubiquitous. We now shift speculation to life forms much larger than blue whales or even that 2,000-meter-wide box huckleberry mentioned in SF#82/170. In fact, we will transcend even Gaia; that is, earth-asanorganism (SF#56/339); and ask whether entire universes might be alive in the sense that they are governed by natural selection, can transmit hereditary information, and adapt themselves to new situations. The evidence for such large-scale living systems or super-superorganisms is widely pooh-poohed by biologists because it does not meet their definition of life; i.e ., metabolism, reproduction, etc. But perhaps they are missing something by thinking too small. In this vein, M.G . Bjomerud has opined: ". .. there is no reason to expect that super-organisms would meet criteria based on observations of individual organisms. Isn't it time to consider the possibility that the boundary between life and non-life may be diffuse, non-stationary over time, and dependent on scale?" ...
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... Science Frontiers ONLINE No. 116: Mar-Apr 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Evolution Of Cyberlife The evolvable hardware described in SF#115 is only one several efforts underway aimed at modeling life and evolution. Network Tierra. Here we have a network of 150 computers linked worldwide by the Internet. One objective is the exploration of structures and patterns of information that drive evolutionary processes. A key element is an artificial lifeform that begins as a "seed organism" (modeled as information, of course) that wanders at will among the different environments presented by the computers in the network. So far, these digital organisms are surviving and changing. (Blakeslee, Sandra; "Cyberlife Critters Evolving in Computer Network," Austin American-Statesman , November 30, 1997. Cr. D. Phelps. Minad Project. Begun in 1953, the Minad Project is pure futurism; that is, the prediction of where the computer revolution is taking us. The Minad Project envisioned three evolutionary stages: Wiring the world (already accomplished as today's Internet); The transformation of the network into a high-speed creative mechanism (the Technosphere); and The emergence of global hyperintelligence (the Autosphere). The Minad Project is now forecasting what this all means for non-silicon-based life in the 21st. Century. (Baker, Lance; "They're Taking Over," New Scientist, p.55, December 6, 1997.) From Science Frontiers #116, MAR- ...
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... great dimension. While still proceeding through the bioluminescence and observing astern, it was noted that the formation of the bands became disrupted and seemed to diffuse a ragged appearance at the perimeter of the wheel to the port side of the vessel. Judging by the distance of the vessels close by -- which were being tracked by radar -- the extent of the rotating bands to the west could not be determined but they were estimated to be between and n. mile. The duration of the phenomenon was 4 minutes from entering to leaving the bioluminescence." (Lehepuu, K.; "Bioluminescence," Marine Observer, 52:76, 1982.) Comment. Bright marine bioluminescence is not uncommon in the Atlantic, particularly in warm waters, but it is very unusual to find geometrically organized displays. The light wheels seen in the Persian Gulf and South China Sea are more frequent and more highly structured. No one has ever come up with a good explanation of how simple marine organisms cooperate to produce such large, complex, rotating displays. From Science Frontiers #117, MAY-JUN 1998 . 1998-2000 William R. Corliss ...
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... with 'Sparks on the Beach' as in SF#104/4 . This was on the Pacific Ocean Beach at San Gregorio, south of San Francisco, several years ago. I was walking on fairly wet sand, just above the tide line. As I stepped, the sand around my feet lit up with small bright dots of phosphorescence. I would not have said that the color was blue, but it could have been like blue-white, like the star Rigel. I found that if I stepped hard or stamped my foot, the lights flashed brighter and the lit area went out farther from my foot. I could see the movement expanding out. After a stamp or two, they did not light up as much. I assumed that this was caused by some organism that lit up when it felt pressure, and 'wore out' after it had done this a few times -- a refractory period probably occurred." (Hastings, Arthur; personal communication, March 21, 1996) Comment. This is probably a pressureinduced biological phenomenon, but we have no idea what kind of organism produces the lights. Footsteps do produce a rapidly expanding pressure wave on damp sand, which whitens the sand as it moves outward. But we have never seen any luminosity on our Atlantic beaches, even on dark nights. From Science Frontiers #107, SEP-OCT 1996 . 1996-2000 William R. Corliss ...
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