319 results found.
... Issue Sourcebook Project Sourcebook Subjects Hopeful monsters rather than gradual evolution?S. J. Gould, who conducts a monthly column in Natural History reviews the sad history of Goldschmidt and his villification by the scientific establishment. Goldschmidt saw the fossil record as woefully inadequate to justify the assumption of gradual evolution of one form into another. Intermediate forms between separate species do not seem to exist in the fossil record and, if they did, they would probably not have been viable creatures. What good is half a wing? Gould believes that Goldschmidt's "hopeful monster" concept will ultimately be dusted off. The key to "macromutation," Gould feels, is not to be found in major gene reorganizations that might produce a whole wing, feathers included, all at once, but rather in changes in the genes that control the development of embryos. Embryos in their early stages are pretty much alike regardless of species. Gould hopes further that the ruling neo-Darwinians will not be so hostile to new ideas and eventually acknowledge Goldschmidt's important work. (Gould, Stephen J; "The Return of the Hopeful Monster," Natural History, 86: 22, June-July, 1977.) From Science Frontiers #2 , January 1978 . 1978-2000 William R. Corliss ...
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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 Fish Change Gender When Necessary Abstract. "The simultaneous removal of three to nine males from large social groups of Anthias squamipinnis led to close to a one-to-one replacement of the removed males by sex-reversing females. The females changed sex serially within each group with a mean interval between successive onset times of 1.9 days. The timing of sex change is thus not independent for each fish but is influenced by the events surrounding other sex reversals within the group." (Shapiro, Douglas Y.; "Serial Female Sex Changes after Simultaneous Removal of Males..." Science, 209:1136, 1980.) From Science Frontiers #13, Winter 1981 . 1981-2000 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 Large changes of the earth's magnetic fields in historical times By measuring the magnetic properties of bricks and other accurately dated human artifacts, geophysicists can reconstruct the history of the local magnetic field. Near Loyang, China, the field was as much as 54% higher in 300 A.D . than it is now. It was 15% higher in 1500 A.D . In 1000, it was less than today's value. (Wei, Q.Y ., et al; "Intensity of the Geomagnetic Field near Loyang, China, between 500 BC and AD 1900," Nature, 296:728, 1982.) Comment. Direct measurements of the earth's field go back only a few hundred years, but they are consistent with the data reconstructed from artifacts, both showing a steady decrease since 1500. No one has estimated the effects of these substantial changes on radiocarbon dating and, perhaps, human biology. From Science Frontiers #22, JUL-AUG 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 19: Jan-Feb 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Species Stability Is A Real Problem The reader should refer to the following item for the basic paleontological facts discussed by Williamson. The biological implications of the mollusc lineages drawn up by Willianson are rather profound. In the present item, Williamson complains that scientists and critics have focussed primarily upon his claim that his mollusc lineages support the punctuated evolution model (which they do) but avoid his main point: namely, that the lineages are static over very long periods of time. They do not change slowly, bit by morphological bit, into new species as an evolutionist would expect. Instead, they remain un-changed until they become extinct. This striking aspect of the fossil record is not predicted by neo-Darwinism -- and there is the rub! (Williamson, Peter G.; "Morphological Stasis and Developmental Constraint: Real Problems for Neo-Darwinism," Nature, 294:214, 1981.) Comment. In neo-Darwinism, evolution unfolds by small accumulated changes, the causes of which may be chemicals in the environment, nuclear radiation, and other "stresses." Neo-Darwinism goes hand-in-hand with geological Uniformitarianism, both of which are favored philosophically by scientists because slow change is more amenable to scientific explanation. The large sidewise steps of punctuated evolution are difficult to explain in terms of known "forces." In this context, the radical concepts of directed panspermia and the impact ...
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... Science Frontiers ONLINE No. 10: Spring 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bend Interferometers Not Spoons Because spoon-bending and similar purported mental feats involve so much legerdemain and trickery, scientists generally avoid psychic research. Taking a different tack, R.G . Jahn, at Princeton, has been experimenting with microscopic psychic effects, such as raising the temperature of a thermistor by a few thousandths of a degree or changing the separation of interferometer mirrors by a hundred-thousandth of a centimeter. Quite unexpectedly (at least to the conventional physicist) the mind seems able to cause such changes at will under controlled conditions. The changes are minuscule to be sure, but cause-and-effect is clear-cut according to Jahn. But don't say that psi power has now been scientifically proven. The effects vary from person to person and, for the same individual, from time to time. The fact that one cannot predict the occurrence of the effects has led Jahn to speculate that the phenomena are inherently statistical. (Anonymous; "Dean Justifies Psychic Research," Science News, 116:358, 1979.) Comment. In other words, the effects resemble radioactivity where the behavior of a single atom is unpredictable but en masse the atoms follow the law of radioactive decay. From Science Frontiers #10, Spring 1980 . 1980-2000 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 Magnetic tune played on saturn's rings The strange dark radial spokes seen in Voyager's photos of Saturn's rings wax and wane with a period of about 621 minutes. This is very close to the rotation period of Saturn's magnetic field. Somehow, the rotating magnetic field interacts with the particles making up the rings, forcing density or reflectivity changes that we see as transitory spokes. It is not yet clear how this magnetic tune is played. (Proco, C.C ., and Danielson, G.E .; "The Periodic Variation of Spokes in Saturn's Rings," Eos, 63:156, 1982.) Comment. Brightness changes have also been noted in the zodiacal light, which is light reflected from particles surrounding the sun. After reading about Saturn's variable spokes, one wonders whether solar-system magnetic fields might be the cause of these mysterious variations in the zodiacal light. From Science Frontiers #21, MAY-JUN 1982 . 1982-2000 William R. Corliss ...
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... 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. 5: November 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Sunspots And Flu The last six sunspot peaks have coincided with flu pandemics. During the sunspot maxima of 1947, 1957, and 1968, the influenza-A virus underwent anti genic shifts that allowed the virus to bypass the immunity built up in the populace. In 1937, a pandemic occurred but no genetic change was detected, although one might have gone unnoticed. The deadly worldwide 1918-1919 epidemic transpired just after the 1917 sunspot peak and before the discovery of the flu virus. The sunspot maximum of 1928 may have signaled a major shift from the virus causing the 1918-1919 pandemic to the type now afflicting us. (Hope-Simpson, R.E .; "Sunspots and Flu: A Correlation," Nature, 275:86, 1978.) Reference. The curious phenomena of epidemics are cataloged at BHH6 and BHH7 in Biological Anomalies: Humans II. This Catalog is described here . From Science Frontiers #5 , November 1978 . 1978-2000 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 Dark Secret Behind Jupiter When Jupiter's satellite Io ducks into Jupiter's shadow, something mysterious happens. Some of the time, but not always, Io emerges from the shadow about 10% brighter than when it entered. In 10-20 minutes, its brightness decays to normal levels. One suspicion is that SO2 in Io's atmosphere condenses on the planet's surface when it is in the cold shadow, thus coating some dark areas with a bright sulfurous 'frost.' However, a recent measure of Io's post-eclipse brightness detected no brightness change whatsoever. Apparently we have a real but rather unreliable phenomenon. (Morrison, Nancy D., and Morrison, David; "Io; Post-Eclipse Brightening Still Mysterious," Mercury, 11:27, 1982.) Reference. Io's post-eclipse brightening is cataloged at AJX6 in The Moon and the Planets. To order this book, visit: here . From Science Frontiers #22, JUL-AUG 1982 . 1982-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 5: November 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects 70TH ANNIVERSARY OF THE TUNGUSKA EVENT Rich reviews the facts known about the fall and detonation of the famous 1908 "meteor." That this was no ordinary meteor is born out by several curious data: Tree-rings in the area show an enormous acceleration of growth since 1908; Inhabitants of this remote region stated that the reindeer suffered from mysterious scabs in 1908; There is a slight but definite increase in the radioactivity of the surviving trees; and Testimony indicates that the me-teor changed direction twice before impact. The various theories of what really happened, from black hole to nuclear explosion, are listed without comment. (Rich, Vera; "The 70-Year-Old Mystery of Siberia's Big Bang." Nature, 274:207, 1978.) From Science Frontiers #5 , November 1978 . 1978-2000 William R. Corliss ...
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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 Where did chief joseph get a cuniform tablet?Among the effects of Chief Joseph, the famed leader of the Nez Perce Indians, was a clay tablet bearing a cuneiform inscription. The tablet transmits no startling message, being merely a receipt for one lamb changing hands. But where did a Northwest Indian chief get a 3,000year-old tablet? The tablet first came to light around 1878, long before cuneiform tablets became common on the artifacts market. Still, it could have been a gift from some missionary or tourist -- or even planted as a hoax. (Park, Edwards; "Where Did Chief Joseph Get a Cuneiform Tablet?" Smithsonian Magazine, 9:36, February 1979.) Reference. For other enigmatic New World tablets and inscriptions, read our Handbook: Ancient Man, which is described at: here . From Science Frontiers #7 , June 1979 . 1979-2000 William R. Corliss ...
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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 Unwanted Noise On The Terrestrial Tape Recorder The hypothesis of continental drift and sea-floor spreading depends heavily upon the strip-like magnetic anomalies that parallel the active ocean ridges. Molten material pushing out along these ridges spreads out, solidifies, and is magnetized by the prevailing terrestrial magnetic field. Thus, the spreading sea floor becomes a "tape Recorder" preserving the record of changing terrestrial polarity over the past several hundred million years. As one drills into this thin conveyor-belt/tape-recorder, one would expect to encounter only rocks of one polarity. Not so! Some of the holes drilled by the Deep Sea Drilling Project have passed through several polarity zones. To illustrate, core 395A from the mid-Atlantic ridge is magnetized normally for the upper 170 meters, reversely for the next 310 meters, and normally again for 40 meters. Is the tape-recorder idea therefore incorrect? Some scientists argue that it is and that the whole modern edifice of plate tectonics is suspect. (Anonymous; "Testing Vine-Matthews," Open Earth, p. 28, April 1979.) From Science Frontiers #7 , June 1979 . 1979-2000 William R. Corliss ...
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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 Coral Carbon Ratios Confound Chronometry By measuring the carbon-14/carbon-12 ratios in the annual growth bands of coral, scientists hope to spot natural and man-made changes in global chemistry. For example, the large-scale use of fossil fuels should depress the ratio by adding carbon-12 in undue quanti ties. The advent of the nuclear age boosts the ratio through the addition of carbon-14 to the environment. Predictably, the carbon ratio rises dramatical ly after 1950 (the bomb tests, etc.). Before this date, however, anomalies crop up: Coral-ring and tree-ring data differ substantaially when they should not; Coral-ring carbon ratios from relatively close locales, such as Bermuda (solid line) and the Florida Keys (dashed line), also differ significantly. Item 1 might be due to non-atmospheric carbon upwelling in deep-ocean water; but this would not explain the Bermuda and Florida discrepancies. (Anonymous; "Carbon-14 Variations in Coral," Open Earth, No. 3 p. 30, 1979 Comment. These discrepancies are particularly relevant to the carbon-14 dating of seashells, which often produces wildly incorrect ages. From Science Frontiers #8 , Fall 1979 . 1979-2000 William R. Corliss ...
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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 earth's ring The most profound climatic event of the Tertiary was the terminal Eocene event 34 million years ago. The sudden change in the abundance of forest plants suggests that the winters became much more severe while the summers remained about the same. At about the same time, the radiolaria were devastated by some sort of disaster. This was also the time when the North American tektite strewn field was deposited -- a field that stretches halfway around the world. John O'Keefe hypothesizes that some of the tektites and microtektites that rained down during this period missed the earth and went into orbit around it, forming an opaque Saturn-like ring. This ring might have lasted a million years or more; and its shadow could have caused the extrasevere winters postulated from botanical data. (O 'Keefe, John A.; "The Terminal Eocene Event; Formation of a Ring System around the Earth," Nature, 285:309, 1980.) Comment. Many who have previously speculated about terrestrial ring systems, such as I.N . Vail, were called pseudoscientists! Reference. The North American tektites are the subject of Section ESM3 in our Neglected Geological Anomalies. Ordering information here . Earth's ring shadow From Science Frontiers #12, Fall 1980 . 1980-2000 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. 13: Winter 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Proof of reincarnation?" The authors report a case of the reincarnation type with several unusual features. First, the subject began to have apparent memories of a previous life when she was in her thirties, a much older age than that of the usual subjects of cases of this type; second, the memories occurred only during periods of marked change in the subject's personality; and third, the new personality that emerged spoke a language (Bengali) that the subject could not speak or understand in her normal state. (She spoke Marathi and had some knowledge of Hindi, Sanskrit, and English.) A careful investigation of the subject's background and early life disclosed no opportunities for her to have learned to speak Bengali before the case developed. A final interpretation of this case cannot be made on the basis of present information and knowledge. The authors, however, believe that, as of now, the data of the case are best accounted for by supposing that the subject has had memories of the life of a Bengali woman who died about 1830. (Stevenson, Ian, and Pasricha, Satwant; "A Preliminary Report of an Unusual Case of the Reincarnation Type with Xenoglossy," American Society for Psychical Research, Journal, 74:331, 1980.) Comment. Most such cases of purported reincarnation quickly collapse under scrutiny, but this one seems a bit more substantial. From Science Frontiers #13, ...
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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 field is falling, the field is falling NASA's Magnetic Field Satellite has confirmed a trend that goes as far back as Gauss in 1830; namely, that the terrestrial magnetic field is decreasing in strength. At the rate measured by the satellite, the Earth's field will hit zero in about 1200 years. Of course, NASA's scientists warn that the observed decrease may only be a temporary fluctuation. The geological record seems to register a long history of magnetic field reversals, with great biological changes coinciding with the field flips. (Nonymous; "Magsat Down: Magnetic Field Declining," Science News, 117:407, 1980.) Comment. Some field reversals have been within the time of man; 12,000 years ago and less. What happens to life forms dependent upon the earth's field for navigation during a reversal? Can they evolve new navigation methods in only a few thousand years? From Science Frontiers #12, Fall 1980 . 1980-2000 William R. Corliss ...
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... part of a complex social "superorganism," the termite colony. That termites had bugs in-side them has long been known; but the new-found complexity and interdependency of life systems within life systems is remarkable. The researchers believe that the life forms inside the termite work together to create the uniform internal environment needed by all inhabitants, just as the termites themselves cooperate to maintain a favorable environment inside their hill. (Anonymous; "And Littler Bugs Inside 'Em," Scientific American, 246:78, February 1982.) The termites, though, are only part of a much larger ecosystem, the earth itself. J.E . Lovelock, in his Gaia, A New Look at Life On Earth, has observed that our planet's environment has actually changed little down the eons despite solar variations. Lovelock's hypo thesis is that all terrestrial life -- animals, plants, termites, etc -- work sym biotically to maintain planetary temperatures, atmospheric constituents, etc., conducive to life, just like the termite's internal residents on a much smaller scale. The Gaia concept was restated by R.A . de Bie in a letter to Nature about the possibility of life in outer space. He observes that terrestrial life, according to Gaia-thought, will naturally develop a species that can carry life off the planet to new and safer environs. Humankind, of course, is the first attempt we know of to create such an agent. Other planetary systems might have differently constituted agents. (de Bie, Roeland ...
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... Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cosmic Death Waves In the language of science, W.M . Napier and S.V .M Clube provide a scenario of cyclic terrestrial catastrophism. Their thesis is that the solar system periodically passes through the regularly spaced spiral galaxy arms every few 107 years. Planetesimals in these arms cra-ter the solar-system planets at these times and also provide the raw materials for new comets, asteroids, satellites, and even planets. Supporting their theory is the repeating history of geological revolutions with the accompanying extinctions and reflowerings of life. A remarkable feature of this paper is a table of shortlived solar-system phenomena (comets and rapidly evolving staellite-and-ring systems). The tenor is one of episodic catastrophism and a rapidly changing solar system; viz., Saturn's rings evolving in only 104 years. (Napier, W.M ., and Clube, S.V .M .; "A Theory of Terrestrial Catastrophism," Nature, 282:455, 1979.) Comment. This outlook differs radically from that still disbursed in our schools and colleges. From Science Frontiers #10, Spring 1980 . 1980-2000 William R. Corliss ...
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... recent Russian successes with BPM (Bio-Physical Method) in locating minerals. BPM has created quite a stir in the USSR, with all the scientific trappings of conferences and journal papers. The Russians evidently use BPM in conjunction with aerial photogeological surveys in pinpointing mineral deposits. BPM anomalies are detected on foot by hand-held BPM de tectors (read: divining rods). Williamson goes on to describe the ridicule heaped on dowsing in the West. The negative experiments of Foulkes with trained dowsers shoved dowsing out to the lunatic fringe. But recently, a little-mentioned American study by Chadwick and Jensen seems to contradict Foulkes. Chadwick and Jensen, highly skeptical at the beginning of their experiments, were surprised to discover that their 150 novice dowsers were actually sensitive to the small magnetic field changes one expects in the neighborhood of mineral concentrations. The dowsing effect is weak but apparently real. (Williamson, Tom; "Dowsing Achieves New Credence," New Scientist, 81:371, 1979.) From Science Frontiers #7 , June 1979 . 1979-2000 William R. Corliss ...
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... BP) formation called the Burgess Shale has miraculously preserved a vast assemblage of soft-bodied sea creatures, especially arthropods. Does this rich and unusual deposit help elucidate arthropod evolution? No, it has complicated the problem. Few of the fossil arthropods can be easily related to groups now living. The Burgess Shale arthropod population is primitive in some ways but remarkably specialized in others. Some of the fossils have body segments like those in one recognized arthropod group but display limbs resembling those of an entirely different group. (Fortey, R.A .; "The Burgess Shale: A Unique Cambrian Fauna," Nature, 293: 189, 1981.) Comment. It appears that Nature was shuffling the gene deck, or that there was rampant hybridization, or that confusing programs for evolutionary change were drifting in from the cosmos a la Hoyle and Wickramasinghe! From Science Frontiers #18, NOV-DEC 1981 . 1981-2000 William R. Corliss ...
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... gases escaping from deep within the earth. Perhaps some petroleum and natural gas reserves have been created by primordial hydrocarbons working their way outward through the crust rather than by the geochemical alteration of biological materials. Perhaps almost all petroleum is abiogenic -- some Russian scientists hold this view! Western scientists are almost unani-mous that natural gas and oil are bio genic with maybe a touch of upwelling abiogenic hydrocarbons. A major reason given for this stance is that the biogenic theory has been so productive in locating hydrocarbon reserves. This, of course, leaves the earthquake lights and sounds still unexplained. (Anonymous; "Abiogenic Methane? Pro and Con," Geotimes, 25:17, November 1980.) Comment. The moral of this might be that seemingly inconsequential phenomena historically lead to wholesale changes in scientific thinking; viz., the insignificant advance in Mercury's perihelion. Reference. The possible abiogenic origin of natural gas is covered at ESC16 in Neglected Geological Anomalies. For a description of this Catalog, visit: here . From Science Frontiers #15, Spring 1981 . 1981-2000 William R. Corliss ...
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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 Distant galaxies look like those close-by Apropos the preceding item that the Expanding Universe Theory may be flawed, astronomers have discovered that supposedly distant galaxies look pretty much like those in our immediate neighborhood. Specifically, galaxies 10 billion light years away differ little spectrally speaking from those only a billion light years away. The point is that the distant galaxies should appear 9 billion years younger because their light took that long getting here. They look the same, and that fact could imply: (1 ) Galaxies mature rapidly and do not change much after a billion years; (2 ) Our cosmic time scale is all wrong; (3 ) There was no Big Bang and galaxies may have widely varying ages; or (4 ) None of the above. (Anonymous; "Most Distant Galaxies: Surprisingly Mature," Science News, 119:148, 1981.) Reference. Distant galaxies are anomalously blue. See AWF1 in our Catalog: Satrs, Galaxies, Cosmos. For ordering information, visit: here . From Science Frontiers #15, Spring 1981 . 1981-2000 William R. Corliss ...
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... ," Current Anthropology, 23:37, 1982.) Comment. A conventional rationalistic scientist would, or should, react to Winkelman's paper by saying that: Magic is not based on psi, rather psi is magic and has no scientific basis. Winkelman, on the other hand, tacitly assumes the reality of telepathy, precognition, etc. The real issue, of course, is whether there really is an "order of the universe" beyond the ken of present-day science. The history of science shows that science has eventually accepted one impossible idea after another; viz., meteorites and hypnosis. Psi may not make the grade. Even if psi is real, it cannot become part of the scientific belief system until dogmas about the nature of life and man change. From Science Frontiers #21, MAY-JUN 1982 . 1982-2000 William R. Corliss ...
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... small mass and that it can oscillate from one variety to another." These experiments are not yet conclusive; and if the neutrino mass is not zero, it hardly weighs more than the grin of a Cheshire cat. But taken together, the laboratory results confirm that neutrinos are perplexing particles. Are they different entities or a single species wearing different costumes? The implications of the recent measurements are far-reaching: Physicists believe that there are a billion neutrinos around for each nucleon (proton, neutron, etc.) so that if neutrinos possess just a hint of mass, they will dominate the mass of the universe; and Measurements of solar neutrinos fall short by a factor of three of what theory says the sun should spew out. This discrepancy could be explained if the solar neutrinos change from electron neutrinos to another form during their flight from the sun to earth, for the terrestrial neutrino detectors measure only electron neutrinos. (Anonymous; "Do Neutrinos Oscillate from One Variety to Another?" Physics Today, 33:17, July 1980.) From Science Frontiers #12, Fall 1980 . 1980-2000 William R. Corliss ...
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... remain true and revert to one or the other of the original species. Although cell fusion has been observed only under laboratory conditions, it seems to represent a near-universal cell phenomenon that might be realized rarely under natural conditions. The implications for the history of life are far-reaching. For example, the mitochondria in human cells that help our bodies use oxygen to obtain energy may well be descendants of bacteria that once fused with primitive cells. The same may be true for the chloroplasts in plant cells. (Thomas, Lewis; "Cell Fusion: Does It Represent a Universal Urge to 'Join Up'?" Science Digest, 86:52, December 1979.) Comment. Natural cell fusion might make large evolutionary steps possible and be much faster than endless small genetic changes. Are we all composite creatures? From Science Frontiers #10, Spring 1980 . 1980-2000 William R. Corliss ...
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... 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! Is not all life implicitly encoded in the properties of the most fundamental particles? If not, reductionism is a lie. From Science Frontiers #11, Summer 1980 . 1980-2000 William R. Corliss ...
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... the atomic unit of time. If these two ratios are truly equal, then G must decrease with time. Beyond the unstable feeling one gets, there is nothing in physics or cosmology to discourage a belief in time-varying gravity. Indeed, some as-tronomical data weakly support the idea. It is geophysics, though, where one finds strong evidence. Measurements of the decreasing length of the day and the expansion of the earth give about the same value for a decreasing G -- after other contributing factors have been eliminated. An interesting consequence of all this is that astrophysical theory seems to require that a decreasing G be balanced by increasing mass. Experiments are now underway to detect the continual creation of mass in terrestrial objects. (Wesson, Paul S.; "Does Gravity Change with Time?" Physics Today, 33:32, July 1980.) From Science Frontiers #12, Fall 1980 . 1980-2000 William R. Corliss ...
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... . 19: Jan-Feb 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects African Fossil Sequences Support Punctuated Evolution East of Lake Turkana, in northern Kenya, the geologist finds exceptionally fine sequences of fossil molluscs in old lake deposits. Williamson has scrutinized the distribution of some 190 faunas with high stratigraphic resolution; that is, he believes he has been able to sketch for the first evolutionary events on a fine time scale. Williamson underlines three important observations: (1 ) Species seemed to arise suddenly, as predicted by the "punctuated evolution" model; (2 ) The formation of new species was accompanied by marked developmental instability in the transitional forms; and (3 ) All lineages were morphologically stable for long periods -- they did not change form! The biological implications of this important study are summarized in the preceding item. (Williamson, P.G .; "Palaeontological Documentation in Cenozoic Molluscs from Turkana Basin," Nature, 293:437, 1981.) Comment. Evolutionists have often bewailed the obvious lack of transitional forms (missing links) in the stratigraphic record. According to Williamson's results, transitional forms would be few in number and display considerable morphological instability. In essence, this means that missing links may not exist in a practical sense. If this is true, one wonders whether those famous evolutionary family trees in all the textbooks, such as that of the horse, are really misleading. From Science Frontiers #19, JAN-FEB 1982 . 1982-2000 William R. Corliss ...
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... Dreams More Real Than Reality Those people who experience so-called lucid dreams say that they are not only vivid in all human senses but completely under the control of the dreamer. Specifically, individuals can be commanded to appear and the action controlled to please the dreamer. As Keith Hearne, a dream researcher, remarks with tongue-in-cheek, the entertainment possibilities are endless if lucid dreaming could be induced in everyone! Lucid dreams are so real that the dreamer will sometimes believe that he has awakened and answered questions from the researcher, when nothing like that has happened. Lucid dreaming occurs only during periods of REM (Rapid Eye Movements) sleep. The lucid dream-er, however, can signal the dream researcher that lucid dreaming has begun with agreed-upon eye movements and changes in the rate of breathing. (Hearne, Keith; "Control Your Own Dreams," New Scientist, 91:783, 1981.) Comment. The fact of lucid dreaming encourages many questions. How is it related to out-of-the-body experiences and hallucinations? Pertinent once more is that old philosophical teaser: How do we know that reality is not a dream from which we shall soon awaken? It turns out that lucid dreamers have to devise special tests to ascertain whether they are dreaming or awake! From Science Frontiers #18, NOV-DEC 1981 . 1981-2000 William R. Corliss ...
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... . Probably the key feature of the Princeton work is its "high technology" content. This long, highly technical article is replete with circuit diagrams, photos of shiny equipment, charts, and the complete panoply of modern scientific research. In the section on psychokinesis, we read about Fabry-Perot interferometers, dual thermistors, glow-discharge experiments, Gaussian analog devices, etc. (There is a companion section on remote viewing experimentation!) To round out this overview, the section on historical/philosophical background and the superb bibliography must be mentioned. Although Jahn regards his work as only beginning, he does feel that the early results clearly show the existence of non-chance factors in psychokinesis and remote-viewing experiments. For example, interferometer fringes and straingauge readings seem to be changed by the application of "mental forces." But the experiments cannot always be replicated and subjects' abilities are ephemeral. The flavor of the Princeton findings are well put in these sentences from the summary paragraphs: ". .. it appears that once the illegitimate research and invalid criticism have been set aside, the remaining accumulated evidence of psychic phenomena comprises an array of experimental observations, obtained under reasonable protocols in a variety of scholarly disciplines, which compound to a philosphical dilemma. On one hand, effects inexplicable in terms of established scientific theory, yet having numerous common characteristics, are frequently and widely observed; on the other hand, these effects have so far proven qualitatively and quantitatively irreplicable, in the strict scientific sense, and appear to be sensitive to a variety of psychological and ...
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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 A Funny Thing Happened Along The Mean Free Path A little anomaly may go a long way. Accelerator experiments at Berkeley have again focussed attention on those few fragments from nuclear reactions that have unexpectedly short trajectories. About 6% of these fragments travel only about one tenth as far as prevailing physical laws say they should. These anomalously short mean free paths are not new, having first cropped up in 1954, but they have gone unexplained for 26 years. Current speculation is that the anomalous fragments somehow change their identities, making them more susceptible to collision (i .e ., their collision cross sections spontaneously increase by ten times). But no known transformations of matter can do this! Consequently, we are left with the possiblity that some entirely new form of matter exists. (Robinson, Arthur L.; "A Nuclear Puzzle Emerges at Berkeley," Science, 210:174, 1980.) Comment. Just a few weeks ago, some nuclear physicists were saying that the advent of quark theory explained everything in their field. From Science Frontiers #13, Winter 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 17: Fall 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Solar Cosmic Rays Stimulate Thunderstorms Not so long ago the idea of short-term solar influences on terrestrial weather was treated with contempt. However, meteorologists are now being converted in droves because believable physical links have been found linking sun and earth. A prime example is the bombard-ment of the terrestrial atmosphere by solar cosmic rays. The cosmic rays and the secondary particles they create ion-ize enough of the atmosphere to disturb the entire planetary electrical circuit. The details of the circuit changes are still under study, but there seems no question about cosmic rays initiating thunderstorm activity. Plots of global thunderstorm activity peak strongly about three days after any maximum in solar cosmic rays. (Lethbridge, M.D . "Cosmic Rays and Thunderstorm Frequency," Geophysical Research Letters, 8:521, 1981.) Comment. At its present rate of decline the earth's magnetic field will reach zero in 1200 years. With this protective magnetic bottle gone, we see a good future for lightning rod manufacturers. hunderstorm frequency index shows a maximum 3 days after cosmic-ray maximum. From Science Frontiers #17, Fall 1981 . 1981-2000 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 Hooray, another "dangerous" book!The May 22, 1981, issue of Science devotes three entire pages to a discussion of the issues raised in the book Genes, Minds, and Culture, written by Edward Wilson and Charles Lumsden. The subject of this book is "gene-culture coevolution," which infers that human culture is controlled not so much by "free will" as by rapidly changing human genes. The authors propose that as few as 1000 years are sufficient for important genetic shifts. Such shifts might, for example, impel humans to break out of the Middle Ages and bring on the Industrial Revolution. The most controversial facets of the theory are: (1 ) The tight genetic control over human culture with little room for free will; and (2 ) The rapid blossoming of many cultures as genes shift about. As one scientist remarked, this book is "dangerous." Others describe it as marvelous. The Science article deals not so much with the book as with the reactions to it -- and the reactions have been powerful, both pro and con. (Lewin, Roger; "Cultural Diversity Tied to Genetic Differences," Science, 212:908, 1981.) Comment. The impression one gets from the synopsis of the book is that humankind is diversifying rapidly into new cultural configurations not through human volition but because of those imperious "selfish genes" we all carry. From Science ...
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... s books, the data form the core of the controversy. Reviewed are the Blanchard Stone (Celtic writing in Vermont); a ceramic tablet inscribed in ancient Libyan (Big Bend National Park, Texas); the Massacre Lake petroglyphs (apparent Carthaginian writing in Nevada); and two Roman coins from a group picked up along a Massachusetts beach. Traditionalists denounce these finds and Fell's interpretations with a fervor once reserved for von Daniken. (Bradner, John H., and Laudin, Harvey; "America's Prehistoric Pilgrims," Science Digest, 89:90, May 1981.) Comment. The fact is that if any one of Fell's many, many identifications and translations of North American inscriptions is correct, our whole view of ancient seafaring will have to change. Reference. Our Handbook Ancient Man brims with anomalous inscriptions found all over the world. For details on this book, go to: here . The Blanchard Stone, discovered in Vermont, is a prayer for rain inscribed in a form of Gaelic used by Iberian Celts, according to Barry Fell. From Science Frontiers #16, Summer 1981 . 1981-2000 William R. Corliss ...
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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 Remarkably Early Dates For Agriculture B.K . Maloney, of the British Museum, describes his pollen analysis of sediments that have accumulated in the Toba Highlands of North Sumatra, Indonesia. The base of a 9.7 -meter core from the Pea Sim-sim Swamp has yielded a radiocarbon date of 18,496 years. Pollen studies of the core indicate a brief decline of forest pollen about 17,800 BP along with increased sedimentation characteristic of cleared land. Taken by themselves, these data would probably be interpreted in terms of natural climate changes. But extremely early dates for human activity exist nearby: 14,000 BP for agriculture in Thailand and 11,000 BP for forest clearance on Taiwan. It is possible, therefore, that men were clearing land for planting in North Sumatra almost 18,000 years ago. (Maloney, B.K .; "Pollen Analytical Evidence for Early Forest Clearance in North Sumatra," Nature, 287:324, 1980.) Comment. Some archeologists hotly disoute the early dates mentioned above. For more, see our Handbook: Ancient Man. Ordering information for this volume may be found here . From Science Frontiers #13, Winter 1981 . 1981-2000 William R. Corliss ...
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... had a more difficult time getting his results published today, for he showed quite clearly that Einstein's Special Theory of Relativity did not correspond to lab results. At the time, such results were not so shocking. Indeed, some philosophers had shown that Special Relativity led to undesirable paradoxes, and experiments by Sagnac and Michelson/Gale had cast additional doubt on this aspect of Relativity. Such experiments by Ives and other key scientists suggested that an ether actually did exist and that it could serve as an absolute reference frame. Another implication was that time was an independent entity unaffected by motion and that the infamous Twin Paradox was a fiction. Ives himself believed his work proved that so-called relativistic effects could be easily explained by phenomena appealing more to the common sense, such as the change of a light source's frequency with motion (over and above the Doppler Effect), rather than revamping space-time concepts. In short, Ives thought he had proved Special Relativity untenable experimentally and an un-necessary distortion of science's worldview. (Barnes, Thomas G., and Ramirez, Francisco S.; "Velocity Effects on Atomic Clocks and the Time Question," Creation Research Society Quarterly, 18:198, 1982.) Comment. Why do the textbooks neglect to mention the Ives experiments and why should a review of Ives' work appear in a creationist publication? The answers are easy: Special Relativity now has the status of scientific dogma, which one questions at his own peril. The creationists, on the other hand, vehemently reject relativitism ...
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... 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 ideas constantly arriving from far and near -- maybe even from outer space a la Fred Hoyle's book Diseases from Space. From Science Frontiers #22, JUL-AUG 1982 . 1982-2000 William R. Corliss ...
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... 1949 Under the recent law making most government records available to the public, B.S . Maccabee obtained the FBI's UFO file. His analyses of this file have been serialized in the APRO Bulletin. One of the most unsettling revelations concerns the FBI data on the notorious "green fireballs" of the 1948-1949 era. According to the verbatim transcript of the FBI record, dated January 31, 1949, File No. 5: November 1978 Briefly, the "fireballs" were a brilliant green, sometimes beginning and ending with red or orange flashes. The objects travelled mainly on an east-west line at an average speed of 27,000 miles per hour. They seemed to pass over in level flight at altitudes of six to ten miles. On two occasions vertical changes of course were noted. Size was about one-fourth the diameter of the full moon. Multiple fireballs appeared in two instances. No sound was ever noted. No debris was ever discovered. (Maccabee, Bruce S.; "UFO Related Information from the FBI File," APRO Bulletin, 7, March 1978.) From Science Frontiers #5 , November 1978 . 1978-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 34: Jul-Aug 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Behind magnetic flip-flops The earth's magnetic field frequently reverses its polarity. Such flips can of-ten be correlated with climate changes, global ice volumes, sea-floor spreading rates, and deposition of black shales, tektite falls, biological extinctions, etc. The frustrating thing is the lack of clear-cut cause and effect; that is, how these phenomena are linked physically to the geomagnetic field. Part of the problem is that we can only guess at how the geomagnetic field is generated. Let us assume that the earth's magnetic field is created by dynamo action in the planet's fluid core. P. Olson finds analytically that the core dynamo may reverse sign due to fluctuations in core turbulence caused by two competing energy sources: heat loss at the mantle-core boundary and progressive growth of the inner core. In concept, the heat lost at the core-mantle boundary might be linked to climate changes and sea-floor spreading. Taking a different tack, D. Gubbins has investigated the possibility that field reversals are triggered by ice ages and meteorite impacts (tektite falls). The physical mechanism here would be the increase in pressure upon the core, which affects the rate of freezing in the outer core, and thus the power available to the core dynamo. Gubbins found that these externally caused pressure changes were too small to explain the polarity changes. However, the parameters involved ...
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... Science Frontiers ONLINE No. 38: Mar-Apr 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Antarctica revisited, hapgood acknowledged John G. Weihaupt's paper on possible recent changes in the Antarctic ice cover (summarized in SF#36) evidently stirred up considerable scientific interest. Two long letters and Weihaupt's reply have recently been published in Eos. First and significantly, Weihaupt's omission of any reference to Hapgood's popular work, Maps of the Ancient Sea Kings, was pointed out and belatedly acknowledged by Weihaupt. The second letter was from a French scientist, who concluded that: ". .. in spite of some hard facts and in spite of warnings against simplistic theories, the idea of fast changes in the Ross Ice Shelf and its main nourishment area, Marie Byrd Land, is widespread in the United States." Weihaupt responded to this with a massive bibliography supporting the idea of recent, rather extensive changes in the Antarctic ice cover. He stated further that other research suggests that even the East Antarctic Ice Sheet may have undergone deglaciation during the Pleistocene. Those old maps showing Antarctica largely ice-free may not be so crazy after all. (Milton, Daniel J.; "Antarctic Ice Cover," Eos, 65:1226, 1984.) Comment. The real mystery is the identity of the ancient map-drawers. From Science Frontiers #38, MAR-APR 1985 . 1985-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 36: Nov-Dec 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Who mapped antarctica in pre-medieval times?Conventional history has the Antarctic continent being discovered less than 200 years ago. However, the appearance of Terra Australis Re on Orontius Finaeus' map of 1531 and the depiction of a nearly identical continent on Mercator's 1538 map reveal sufficient, accurate knowledge of Antarctic features for us to conclude that someone discovered and mapped Antarctica well before 1500. The question is: Who? An interesting feature of Fineaeus' map is the reduced ice cover compared with what we find today. The Ross Ice Shelf, for example, was almost nonexistent. Such changes in ice cover are consistent with the modern theory of Antarctic climate changes. Apparently, the seas surrounding Antarctica were a bit warmer before 1500, and some unidentified early mariners brought knowledge of this continent back to Europe. (Weihaupt, John G.; "Historic Cartographic Evidence for Holocene Changes in the Antarctic Ice Cover," Eos, 65: 493, 1984.) Comment. Obviously missing from Weihaupt's analysis is any consideration of the famous Piri Re'is map and reference to the work of Charles Hapgood; specifically his Maps of the Ancient Sea Kings. From Science Frontiers #36, NOV-DEC 1984 . 1984-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 37: Jan-Feb 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Recent Pulsations Of Life At a recent meeting of scientists at the Lamont-Doherty Geological Observatory, E. Vrba, of the Transvaal Museum, in Pretoria, stated: "If we eventually are able to establish a good time resolution with the continental record, I expect to be able to discern synchronous pulses of evolution that involve many groups of fauna and flora. Many different lineages in the biota will respond by synchronous waves of speciation and extinction to global temperature extremes and attendant environmental changes. This is my starting hypothesis." Vrba was speaking mainly about the last 25 million years, a mere flash in geological time. For this brief period, the Deep Sea Drilling Program has provided geologists with a detailed and continuous record of climate changes as they were recorded in deep-sea sediments. By contrast, the faunal history of the continents is rather fragmentary, making it rather difficult to match up pulsations of climate with pulsations of life. Even so, scientists have found rather strong correlations between climatary change and biological speciation and extinction at 15, 5, and 2.4 million years ago. (Lewin, Roger; "The Paleoclimatic Magic Numbers Game," Science, 226:154, 1984.) Comment. Note that this is just the period our ancestors seemed to be evolving rapidly. Also interesting is the general agreement between Vrba's statement about the driving forces behind evolution and McClintock's conclusion quoted earlier ...
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... Sep-Oct 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Another Quasar Enigma Astronomer A.P . Fairall has reported an "impossible" physical situation -- a strong scientific anomaly. It seems that a Seyfert galaxy (a very low-luminosity quasar) emits forbidden spectral lines that vary in intensity about every 30 minutes. It is not the "forbidden" character of the spectral likes that disturb the astronomers. (" Forbidden" simply means "improbable" in spectroscopy!) Rather, it is the half-hour variations that pose the dilemma. This is because most astronomers are convinced that the said forbidden lines are emitted by regions of the quasar that are 100-10,000 light years across. A disturbance or physical change leading to a variation in intensity, even travelling at the speed of light, could not begin to move across this huge region in half an hour. Yet, the changes in intensity seem to be there, inferring a physical change that travels perhaps a million times faster than physics permits. Variations in intensity decades long would be acceptable, but half an hour is out-of-the-question! The author of this referenced comment in Nature believes that the observational procedures employed must be at fault. (Gaskell, C. Martin; "Spectra That Defy Explanation," Nature, 304:212, 1983.) Comment. This possible anomaly is closely related to the so-called superluminal velocities also observed in quasars, in which physical effects seem to travel faster than light ...
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... Science Frontiers ONLINE No. 32: Mar-Apr 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earth's magnetic field jerks "It now seems almost certain that around 1969 a spectacular change took place in the geomagnetic field. The change was almost synchronous over the whole of the Earth's surface, took place in less than two years, and is now known to have consisted of a 'jerk': a step change in secular acceleration of the magnetic field that has its origin inside the Earth." (Whaler, K.A .; "Geomagnetic Impulses and Deep Mantle Conductivity," Nature, 306:117, 1983.) Comment. No one really knows just how a "jerk" in the magnetic field is initiated; in fact, the origin of the geomagnetic field as a whole is not well-understood. From Science Frontiers #32, MAR-APR 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 Rise Of Astronomical Catastrophism After being ridiculed for well over a century, astronomical catastrophism is now coming into its own. First, there was the admission that a few small craters, like Meteor Crater in Arizona, just might be of meteoric origin; then, more and bigger craters (astroblemes) were recognized; and, recently, the discovery of the iridium-rich layer at the Cretaceious-Tertiary boundary has made the subject very popular, as evidenced by the following three items: A long, very thorough and scientific review of geological and biological changes caused by meteor strikes throughout the earth's history. (McLaren, Digby J.; "Bolides and Biostratigraphy," Geological Society of America, Bulletin, 94:313, 1983.) A shorter, popular version of the above. (McLaren, Digby; "Impacts That Changed the Course of Evolution," New Scientist, 100:588, 1983.) Evidence is growing that the collision of planetary material with the Earth can profoundly affect local geology, and that impacts of very large meteorites may have influenced the evolution of the Earth and the life that exists upon it. This quotation is from the lead-in to the article references below, which also has a nice world map of major impact sites over 1 km in diameter. (Grieve, Richard; "Impact Craters Shape Planet Surfaces," New Scientist, 100:516, 1983 ...
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... Science Frontiers ONLINE No. 34: Jul-Aug 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Are parasites really the masters?All animals harbor parasites; and some parasites even have their own parasites. The usual effect of a parasite upon its host is debilitation, often to the point of death. But parasites have to reproduce, and some settle for the modification of their hosts 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 ...
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... Science Frontiers ONLINE No. 36: Nov-Dec 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Four 'clever' adaptations According to theory, many butterflies have wing patterns that evolved in response to predation. Some wing patterns blend into the background, making the butterfly hard to spot; other wings have prominent eyespots that are supposed to deter predators or trick them into striking at the wings instead of the soft, vulnerable body. But some tropi cal butterflies have a double problem; their predators change from dry to wet season. One butterfly, Orsotriena medus, masters this situation by changing wing patterns with the season. In the dry season, it is dark brown and inconspicuous; in the wet season, it switches to black wings with ostentatious eyespots and white bands. (Anonymous; "Cryptic Butterflies," New Scientist, 20, September 13, 1984.) The Asiatic freshwater clam has spread rapidly across North America since its accidental introduction about 50 years ago. In addition to its natural dispersal via its more mobile larvae, the young adult clams have a surprising method of hitchhiking rides on the water currents. Through their siphons they deploy long mucous threads. Water currents pull on these threads just as air currents catch the silken threads of migrating spiders. Given a water current of 10-20 cm/sec, the small clams manufacture and deploy their threads, and off they go downstream. (Prezant, Robert S., and Chalermwat, Kashane; "Flotation of the Bivalve Corbicula Fluminea as a Means of ...
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... Science Frontiers ONLINE No. 26: Mar-Apr 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Punching A Hole In The Asteroid Hypothesis Scientists have long searched for a cause for the profound geological and biological changes that apparently occurred between the Cretaceous and Tertiary periods. When an iridium-rich layer was found in several areas at this important boundary, many claimed it as proof of an asteroid impact or some other catastrophism that would nicely explain the massive worldwide changes that occurred. With this preamble in mind, consider the following abstract from an article in Science: "Analyses of the clay mineralogy of samples from the Cretaceous-Tertiary boundary layer at four localities show that the boundary clay is neither mineralogically exotic nor distinct from locally derived clays above and below the boundary. The significant ejecta component in the clay that is predicted by the asteroid impact scenario was not detected." (Rampino, Michael R., and Reynolds, Robert C.; "Clay Mineralogy of the Cretaceous-Tertiary Boundary Clay," Science, 219:1983.) From Science Frontiers #26, MAR-APR 1983 . 1983-2000 William R. Corliss ...
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... Project Sourcebook Subjects Evolution By Numbers The following paragraph is taken from a letter to Nature by a "practising geneticist." "In the discussion in your columns about the application of quantitative methodology based on the study of evolutionary processes to the analysis of the development of human culture, there is an unquestioned assumption on both sides of that issue that quantitative theory, as expounded by practitioners such as Fisher, Haldane, Wright, Cavalli-Sforza and Maynard Smith, has been successful in illuminating and explaining the process of biological evolution and the genetic relationships between species. As far as I know, there is no evidence to support this assumption. Indeed, there is a vast number of observations unaccounted for in the extant quantitative evolutionary theories. Many of these observations (inducible mutation systems, rapid genomic changes involving mobile genetic elements, programmed changes in chromosome structure) challenge the most fundamental assumptions which these evolutionary theories make about the mechanisms of hereditary variation and the fixation of genetic differences." (Shapiro, James A.; "Evolution by Numbers," Nature, 303:196, 1983.) Comments. The "observations unaccounted for" are buried in such obscure journals as S.B . ges. Morph. Physio. (Munchen). It is pretty obvious that the Sourcebook Project is just scratching the surface. From Science Frontiers #28, JUL-AUG 1983 . 1983-2000 William R. Corliss ...
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