264 results found.
... cells. C. elegans is a roundworm, but a famous one. Its 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. 33: May-Jun 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Prisoners Of The Boundary Layer Wings were an inspired evolutionary development. They permit the geographical dispersal of many species, especially insects. But nature, ever-innovative, has other aeronautical techniques up her sleeve. Consider the tiniest insects that do not possess wings. It is difficult for large animals like ourselves to realize that these tiny creatures are actually prisoners of the so-called "boundary layer" of air hugging all surfaces. The thin boundary layer is stagnant very close to the surface. Any tiny in-sect wishing to take advantage of wind-dispersal to propagate the species farther afield must somehow breach this layer. Some of the scale insects have in their instar phases developed the trick of rearing up on their hind legs, penetrating the boundary layer, and presenting a high-drag surface to the wind. (Many climb along plant surfaces inside the boundary layer to exposed areas before exhibiting this behavior.) The wind plucks them off the plant and carries them off to new territories. The authors think this may be convergent evolutionary strategy for many minute insects. (Washburn, Jan O., and Washburn, Libe; "Active Aerial Dispersal of Minute Wingless Arthropods.....," Science, 223:1088, 1984.) Comment. The fact that these insects are shaped like airfoils (i .e ., aircraft wings) is also interesting. Scale insects (first instar phase). ...
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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 "HOPEFUL MONSTERS" IN ICELAND?A UPI item from Reykjavik is appropriate here after the heavy dose of speculation above. Two Icelandic bird hunt ers say they saw a pair of unidentifiable creatures playing on a beach. The creatures, said to be bigger than horses, emerged from Lake Kleiffarvvatn, 20 miles south of Reykjavik. The mysterious animals swam like seals but ran about the beach like dogs. Their footprints were larger than horse hoofs but split into three cloves. An Icelandic scientist commented (quite safely) that, "there is more in nature than we know." (Anonymous; "Icelandic Hunters Claim Sighting of Two Unidentifiable Creatures," Houston Chronicle, November 16, 1984. Cr. J.B . Burns) From Science Frontiers #37, JAN-FEB 1985 . 1985-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 6: February 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Positive Ion Emission Before Earthquakes May Affect Animals Both folklore and modern observations are emphatic that many animals become agitated prior to earthquakes. Cats car-ry their kittens outdoors; cattle panic in their barns; dogs bark for no apparent reason; and even some humans become restless. Tributsch notes that similar behaviors also accompany certain weather situations, such as the Alpine foehn and Near East sharav, which are characterized by high concentrations of positive ions. The unusual "fogs" and luminous displays preceding some earthquakes may also have electrical origins. In essence, Tributsch has reviewed many earthquake precursors and suggests that most can be explained in terms of positive ion emission from the earth due to pre-quake strains. (Tributsch, Helmut; "Do Aerosol Anomalies Precede Earthquakes?" Nature, 276: 606, 1978.) Reference. Even humans are sensitive to "earthquake weather." See Section GQW in: Earthquakes, Tides. Unidentified Sounds. More information on this Catalog volume here . From Science Frontiers #6 , February 1979 . 1979-2000 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 Hark, hark, the dogs do bark American geophysicists have been slow to take unusual animal behavior prior to earthquakes seriously. Spurred by Chi-nese work, a network of observers has been set up in California in an earthquake-prone area. Most reports of strange animal behavior have been after-the-fact. Furthermore, the "strange behaviors" frequently turn out to be common during quake-free periods, but simply not remarked upon. Nevertheless, geophysicists did observe some clear-cut instances of animals super-sensitivity to quake phenomena. Studying aftershocks in the Mohave Desert in 1979, Donald Stierman and his colleagues often heard earthquake booms 4-l0 sec after feeling the shock and seeing their portable seismometers record the tremor. Two dogs nearby inevitably responded with a chorus of barking. Sometimes though, the human observers heard and felt nothing when the seismometers and dogs announced another aftershock. (Kerr, Richard A.; "Quake Prediction by Animals Gaining Respect," Science, 208: 695, 1980.) From Science Frontiers #11, Summer 1980 . 1980-2000 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 New Definition For Humans Needed One scientist has defined humans as "tool makers" as distinguished from "tool users." This distinction is necessary because several animals employ tools for simple tasks, such as fishing termites out of holes. However, Kitahara-Frisch points out in this paper that experiments by Wright with a young orangutan proved that at least one animal can actually make tools; that is, use one tool to make another. More specifically, Wright taught the orangutan to strike sharp flint flakes from a core and then use them to cut a cord and gain access to its favorite food. (Kitahara-Frisch, J.; "Apes and the Making of Stone Tools," Current Anthropology, 21:359, 1980.) Comment. Apparently, with orangutans, at least, no manipulative or cognitive barriers exist to prevent them from entering their own Stone Age. Reference. The ability of non-human mammals to manufacture and use tools is cataloged at BMT11 in Biological Anomalies: Mammals I. To order, go to: here . From Science Frontiers #13, Winter 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 14: Winter 1981 Supplement Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Eyes of deep-sea fish have spare parts The sunlight that filters down into the depths of the sea is exceedingly weak. It is so dark down there that one would expect deep-sea fish to be blind like many cave-dwelling animals. They are not blind; rather many have eyes of fantastic size and novel construction. An unusual feature of some deep-sea eyes is a layered retina. In the conger eel, five layers of photoreceptors are plastered on top of one another. Yet, experiments with conger eel eyes reveal that only one layer of photoreceptors is active at any one time. R. Shapley and J. Gordon, who carried out these experiments at the Plymouth Lab., surmise that the extra retinal layers are being held in reserve, much like the rows of spare teeth found in sharks' mouths. If so, deep-sea fish are the only animals that have evolved spare stores of visual pigments. (Anonymous; "The Mystery of the Non-Functioning Receptors," New Scientist, 88:366, 1980.) Comment. Why haven't cave-dwelling fish taken the same evolutionary route? From Science Frontiers #14, Winter 1981 . 1981-2000 William R. Corliss ...
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... Issue Sourcebook Project Sourcebook Subjects Is your brain really necessary?John Lorber, a British neurologist, has studied many cases of hydrocephalus (water on the brain) and concluded that the loss of nearly all of the cerebral cortex (the brain's convoluted outer layer) does not necessarily lead to mental impairment. He cites the case of a student at Sheffield University, who has an IQ of 126 and won first-class honors in mathematics. Yet, this boy has virtually no brain; his cortex measures only a millimeter or so thick compared to the normal 4.5 centimeters. Although the deeper brain structures may carry on much of the body's work, the cortex is supposed to be a late evolutionary development that gave humans their vaunted mental powers and superiority over the other animals. If the cortex can be removed with little mental impairment, what is it for in the first place? (Lewin, Roger; "Is Your Brain Really Necessary?" Science, 210:1232, 1980.) Comment. Brain size, then, may mean nothing in comparing ancient and modern human skulls or human brain capacity with those of animals! Where is the seat of intelligence? In some cases of hydrocephalus, the cortex is only paper-thin, but little mental impairments is apparent. From Science Frontiers #15, Spring 1981 . 1981-2000 William R. Corliss ...
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... 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 proclaiming territory. Unfortunately, we cannot ask the bowerbirds what they are thinking as they carefully select colors and develop designs. From Science ...
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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. 10: Spring 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Chinese hunt red-haired bigfoot Spurred by reports of large (6 -feettall) animals with wavy red hair walking on two legs, Chinese scientists have been combing the thick forests of Shennongjia, in Hubei Province. Many footprints 12-16 inches long as well as samples of hair and feces have been found. So far, though, no photos or specimens. (Anonymous; "It's Tall, It Has Wavy Red Hair and Chinese Keep Hunting for It," New York Times, p. 5, January 5, 1980.) Reference. Bigfoot, Yeti, and other unrecognized hominids are covered in Section BHU in: Biological_Anomalies: Humans III. For more information on this Catalog, go to: here . From Science Frontiers #10, Spring 1980 . 1980-2000 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 The Human Compass In recent years, scientists have found magnetic material (magnetite) in birds, snails, porpoises, bacteria, and other animals. The utility of these biologically manufactured compasses is obvious. Humans, too, seem to have a magnetic sense, although no one has yet dissected the human head to search for magnetite crystals. Rather, the proof of a magnetic sense comes from direction-finding experiments by Robin R. Baker, in England. In a series of tests involving many subjects, blindfolded humans have been taken far afield and then asked, while still blindfolded, to point "home" and north. The results were surprising. Sense of direction was not lost despite long journeys. Furthermore, tests after removal of the blindfolds showed a marked deterioration of the directionfinding ability. The attachment of magnets and simulated magnets to the subjects proved that the magnets upset di-rection-finding capabilities. The controls with brass "magnets" retained their magnetic sense. (Baker, Robin R.; "A Sense of Magnetism," New Scientist, 87:844, 1980.) Reference. To read more about the human navigation sense, see BHT18 in our Catalog: Biological Anomalies: Humans I. This book is described here . From Science Frontiers #13, Winter 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 Is all natural gas biological in origin?T. Gold and S. Soter, from Cornell, have championed the theory that earthquake lights, sounds, and precursory animal activities may be due to abiogenic natural 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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... 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 A.; "The Ultimate Question," Nature, 295:8 , 1982.) Comment. To ...
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... 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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... of unaccomplished primitives. We quote from the author's abstract: "A recently discovered sheltered rock scar with red pictographs, in Jalisco, west Mexico, is a major addition to the rather meager data on pictographs in Mesoamerica. It appears to contain a complex set of data pertaining to the cosmology of the relatively unknown Indians who inhabited the Jalisco coast during the last Pre-Hispanic period. Analysis of the scar has incorporated both the artistic symbolism of the nearby Huichol Indians, and concepts developed through archaeoastronomy. This analysis suggests that the ceiling pictographs record the use of sky transits of the sun, Venus, or the constellation Orion as wet season/dry season calendric markers. Wall pictographs show the sun on the mountainous horizon, below which is the earth filled with symbols of plants and animals, among these stand shamans calling down the life-giving rain from the god(s ) of the sky. I also explore the possibility that one of the ceiling pictographs is a record of the appearance of the Crab supernova in the sky in A.D . 1054." (Mountjoy, Joseph B.; "An Interpretation of the Pictographs at La Pena Pintada, Jalisco, Mexico," American Antiquity, 47:110, 1982.) Reference. Petroglyphs and other forms of ancient writing are covered in our Handbook: Ancient Man. Ordering data at: here . From Science Frontiers #20, MAR-APR 1982 . 1982-2000 William R. Corliss ...
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... Sewer Exploration A modern bit of folklore tells of dis-carded pet baby alligators flushed down toilets into the sewers of New York. There they grew fat on rats and confronted startled sanitation workers. Is there factual basis for such wild tales? Coleman states that he has compiled a list of 77 encounters with erratic or out-of-place alligators for the period 18431973, including one 5.5 -foot specimen found frozen to death in Wisconsin in 1892. Only one in the 77 is a sewer specimen, but it is from New York City. The New York Times of February 10, 1935, reported a 125-pound alligator, almost 8-feet long, pulled out of a snow clogged sewer on East 123rd Street. Obviously half-frozen from the cold, the animal snapped weakly at its captors. "Let 'im have it!" the cry went up. The only known sewer alligator perished un der flailing snow shovels. No one could explain how the alligator got into or survived in a New York sewer. (Coleman, Loren; "Alligators-in-the-Sewers: A Journalistic Origin," Journal of American Forlkore, 92:335, 1979.) From Science Frontiers #9 , Winter 1979 . 1979-2000 William R. Corliss ...
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... about 65 million years ago. This cataclysmic event is also blamed (by some, at least) for the apparent sudden biological extinctions recorded on these pages of the fossil record. In this setting, the authors of this paper calculate the effects on the earth of a 10-kilometer-diameter object impacting at about 20/km/sec. Do the theoretical results jibe with the geological and paleontological data? Very definitely. Crater ejecta rich in extraterrestrial material would be blasted to an altitude of 10 km, where winds would insure global distribution. In terms of biological stress, the 10-km projectile would transfer 40-50% of its kinetic energy to the atmosphere, creating a heat pulse that could raise global temperatures 30 C (50 F) for several days. Many large animals might well succumb to such a temperature transient. In addition, the protective ozone layer might be blown away by shock waves and not reform for a decade. (O 'Keefe, John D., and Ahrens, Thomas J.; "Impact Mechanics of the Cretaceous-Tertiary Extinction Bolide," Nature, 298,123, 1982.) Reference. We catalog biological extinctions at ESB1 in Anomalies in Geology. To order this book, visit: here . Fig. 1. Particle velocity flow field from a silicate projectile impacting a strengthlessness silicate surface at 15 and 45 km s-1 . Flow fields at a, t = 8.2 ; b, t = 3.1 where r is normalized time. From Science Frontiers #23, SEP-OCT 1982 ...
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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 Static on the hare-lynx cycle signal Almost all ecology textbooks present the 10-11 year hare-lynx cycle as a classic case of prey-predator oscillations. The major data source for such population studies is the record of pelt sales rather than actual field observations. Looking beyond such superficial information, researchers have discovered that the quantity of pelts offered for sale by the Indians depends upon the amount of time they can divert to hunting pelts. This, in turn, is affected by the abundance of food animals, such as moose and hares. It is food first and pelts second. Furthermore, when the plants consumed by hares are overbrowsed during periods of dense hare population, they defend themselves by generating resins and other compounds toxic or repellent to hares. Thus, the hare abundance cycle is affected by: (1 ) Plant defenses; (2 ) Indian hunting strategies; and (3 ) The lynx. (May, Robert M.; "Cree-Ojibwa Hunting and the Hare-Lynx Cycle,: Nature, 286: 108, 1980.) Comment. Here is another case where the attractiveness of a theoretical model has dampened further inquiry. From Science Frontiers #12, Fall 1980 . 1980-2000 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 A 6,000-YEAR-OLD STRUCTURE IN SCOTLAND Timber fragments from a building 78 feet long, 39 feet wide, and 30 feet high, have been radiocarbon-dated at 4,000 B.C . The size and method of construction of this ancient building on the edge of the Scottish river Dee indicate a high level of civilization 1,000 years before Stonehenge. At the same time civilization was supposed to be getting its start in the Middle East, the precocious Scots were evidently constructing large wooden structures, cultivating barley, and probably tending domesticated farm animals. (Anonymous; "An Epic Find," Time, p. 64. June 26, 1978.) From Science Frontiers #5 , November 1978 . 1978-2000 William R. Corliss ...
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... from the abstracts. "Closely spaced samples from an uninterupted calcareous pelagic sequence across the Cretaceous-Tertiary boundary reveal that the extinction of planktonic Foraminifera and nannofossils was abrupt without any previous warning in the sedimentary record, and that the moment of extinction was coupled with anomalous trace element enrichments, especially of iridium and osmium. The rarity of these two elements in the crust of the Earth indicates that an extraterrestrial source, such as the impact of a large meteorite may have provided the required amounts of iridium and osmium." (Smit, J., and Hertogen, J.; "An Extraterrestrial Event at the Cretaceous-Tertiary Boundary," Nature, 285:198, 1980.) "Evidence is presented indicating that the extinction, at the end of the Cretaceous, of large terrestrial animals was caused by atmospheric heating during a cometary impact and that the extinction of calcareous marine plankton was a consequence of poisoning by cyanide released by the fallen comet and of a catastrophic rise in calcitecompensation depth in the oceans after the detoxification of the cyanide." (Hsu, Kenneth J.; "Terrestrial Catastrophe Caused by Cometary Impact at the End of Cretaceous," Nature, 285:201, 1980.) From Science Frontiers #12, Fall 1980 . 1980-2000 William R. Corliss ...
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... Invisible Cord," some very remarkable similarities between identical twins reared apart were recounted. A truly fantastic case has now come to light where identical twins (reared together in this case) behave synchronously. "They do every-thing together, scream or sulk if parted and, most uncannily, talk in unison when under stress, speaking the same words in identical voice patterns that create a weird echo effect." Doctors say that Greta and Freda Chaplin are so close that they seem linked by telepathy. Talking or working, they function in unison. Otherwise, they are of normal intelligence and suffer no mental illness. (Anonymous; "British Twins Too Close for Trucker's Comfort," Baltimore Sun, December 8, 1980. p. A3. AP dispatch) Comment. Animals often move in remarkable synchrony; e.g ., flocks of wheeling birds, schooling fish, tropical fireflies, etc. What invisible cord links them? From Science Frontiers #14, Winter 1981 . 1981-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 1: September 1977 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Animal Behavior Prior To The Haicheng Earthquake The catastrophic Chinese Haicheng earthquake of 1975 was preceded by many reports of unusual animal behavior. Beginning in December 1974, lay observers noted dazed rats and snakes that appeared to be "frozen" to the roads. In February, reports of this type increased markedly, including observations of general restlessness and agitation of the larger animals, such as cows and horses. Rats now appeared as if drunk. Chickens refused to enter their coops and geese frequently took to flight. Chinese scientists seem convinced that such animals behavior might help predict some of the larger earthquakes. Further research is being undertaken at the Institute of Biophysics in Peking and at Peking University. (Molnar, Peter, et al; "Prediction of the Haicheng Earthquake," Eos, 58:254, 1977.) From Science Frontiers #1 , September 1977 . 1977-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 1: September 1977 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Motion Sickness Difficult To Explain In Terms Of Evolution Motion sickness has been called an evolutionary anomaly because it seems highly disadvantageous to those who suffer from it. Yet, motion sickness occurs in many species. Why should it have evolved at all? Recognizing this problem, Michel Treisman seeks to explain the anomaly by noting that neurotoxins accidently ingested by animals cause essentially the same symptoms as motion sickness. To survive, animals must eliminate ingested neurotoxins by vomiting or defecation, both of which also accompany motion sickness. It is simply coincidental that modern vehicles duplicate these symptoms through their motions. The body interprets the signals created by motion as due to dangerous ingested material and acts accordingly. (Treisman, Michel; "Motion Sickness: An Evolutionary Hypothesis," Science, 197:493, 1977.) From Science Frontiers #1 , September 1977 . 1977-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 3: April 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Predaceous insect larvae don " sheep's clothing"The larva of the green lacewing lives in colonies of the wooly alder aphid upon which it feeds. The aphids, however, are protected by "shepherd" ants which normally remove any undisguised predatory larva. To foil the ants, the larva plucks some of the waxy wool from nearby aphids and sticks it on its own back. Thus disguised, the larva continues to consume aphids without the ants being the wiser. (The aphids know of course.) Artificially denuded larva are immediately spotted by ants and ejected from the colony. Cases are known where animals protect themselves from predators by covering themselves with vegetable matter and other debris, but the lacewing larva is unusual in that it mimics its prey by stealing the prey's own clothing. (Eisner, Thomas, et al; "Wolf-in-Sheep'sClothing Strategy of a Predaceous Insect Larva," Science, 199:790, 1978.) Comment. Does evolution satisfactorily explain the existence of such a trait as this? From Science Frontiers #3 , April 1978 . 1978-2000 William R. Corliss ...
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... All Issues This Issue Sourcebook Project Sourcebook Subjects Cattle Mutilations Called Episode Of Collective Delusion During the past several years, farmers in the western states have been reporting dead cattle that seemed strangely mutilated. Soft, exposed parts, such as the ears and genitals, were apparently removed with surgical precision. Some corpses seemed bloodless. Local papers blamed satan worshippers and UFO occupants. This paper analyzes the 1974 mutilation "flaps" in South Dakota and Nebraska, with special attention to the rapid rise and equally rapid decline of public interest as measured by newspaper coverage. In the opinion of the author, these two episodes are classic cases of mild mass hysteria, similar to the occasional crazes of automobile window-pitting. In all cases where university veterinarians examined the corpses, the mutilations were ascribed to small predatory animals. The veterinarians also pointed out that blood coagulates in a couple days after death, accounting for the frequent "bloodless" condition. With such expert reassurances, the "mass delusions" subsided quickly. Cattle mutilation flaps are thus seen by the author as episodes when people interpret the mundane in bizarre new ways, due perhaps to cultural tensions. It is noted, however, that expert veterinarians examined only a few of the dozens of mutilations, and that some people rejected the above commonplace explanations. (Stewart, James H.; "Cattle Mutilations: An Episode of Collective Delusion," The Zetetic, 1:55, Spring/Summer 1977.) From Science Frontiers #1 , September 1977 . 1977-2000 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 Out-of-the-body traveller exerts no influence Many out-of-the-body travellers describe remote scenes observed during their ad ventures and some are credited with registering their presences on instruments and animals. Tests with a subject using "human detector" instruments a quarter mile away showed no consistent results while the subject was "out-of the-body." A kitten in the area gave no sign of a presence. Although the subject described some of the remote targets accurately, the results did not differ from chance. (Morris, Robert L., et al; "Studies of Communication during Out-of-Body Experiences," American Society for Psychical Research, Journal, 72:1 , 1978.) From Science Frontiers #4 , July 1978 . 1978-2000 William R. Corliss ...
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... ONLINE No. 3: April 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Yeti or wild man in siberia?Reports from Russia tell of a creature known locally as the "Chuchunaa" which is over 2 m tall, clad in deerskin, and unable to talk, although it does utter a piercing whistle. A man-eater, the Chuchunaa often steals food from settlements. Observers say that the creature has a protruding brow, long matted hair, a full beard, and walks with its hands hanging below its knees. Soviet scientists speculate that the Chuchunaa represents the last surviving remnant of the Siberian paleoasiatic aborigines that retreated to the upper reaches of the Yana and Indigirka rivers. The last reliable sightings were in the 1950s, and this animal may now be extinct. (Anonymous; "Yeti or Wild Man in Siberia?" Nature, 271:603, 1978.) From Science Frontiers #3 , April 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 WOMAN WHO COULDN'T DESCRIBE ANIMALS The astounding complexity of the human brain was underscored recently by a 70-year-old woman, who could describe anything she saw except animals. The woman had an immune-system disorder that had damaged a small portion of her brain's temporal lobe. Her other mental faculties were intact. "The woman could name plants, foods, and inanimate objects and describe them without hesitation. The scientists were impressed that when shown a trellis, not exactly your everyday object, she could correctly name it and describe its cross-hatched geometry. "But when shown a squirrel or a dog, she froze. She couldn't find the right name for either, nor could she describe their size or shape or furry coats. "Her deficit, involving only a tiny portion of her language skills, was amazingly narrow." (Bor, Jonathan; "The Woman Who Couldn't Describe Animals," Baltimore Sun, p. A1, September 7, 1992.) The implications of this strange case were described in Science News: "The peculiar inability of a 70-yearold woman to name animals has led scientists to propose that the brain harbors separate knowledge systems, one visual, the other verbal or language-based, for different categories of living and inanimate things, such as animals and household objects." (Bower, B.; "Clues to ...
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... sketched in the accompanying figure. The species possessing these various configurations make kindling of the usual evolutionary family trees. Horses, pigs, deer; Whales, shrews; Marsupials, rats, dogs, apes, monkeys; The platypus, sea cows, some bats, humans; African elephants, walruses. (Davidheiser, Bolton; "The Aortic Arch," Creation Research Society Quarterly, 20:15, 1983.) Comment. On this basis alone, humans are more closely related to sea-cows than the apes. Why aren't such discrepancies highlighted in the mainstream scientific literature? Mammalian aortic arch . The key is as follows: RC: right carotid; LC: left carotid; RS: right subclavian; LS: left subclavian; A: aorta. The kinds of animal which have various arrangements are mentioned in the text. From Science Frontiers #30, NOV-DEC 1983 . 1983-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 158: Mar - Apr 2005 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Untranslatable Mohenjo-Daro Script? A very Early Compound Machine Khufu's Secret Burial Chamber: A Phony Discovery? Astronomy Allez Allez Old Galaxies in a Young Universe Biology Do Dolphins Sense the Coriolis Force? Disappearing Animals Wayward DNA: Does it Affect the Shapes of Family Trees? Geology Bermuda Triangles in the Desert! Plate-techtonics 'theory' is slowly and inevitably Dyning Geophysics Hum Update Psychology Motherese: A precursor of Human Language? Unclassified Multimedia Communications in the Cosmos Computer Bacteria ...
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... Science Frontiers ONLINE No. 144: Nov-Dec 2002 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology A dirty story from Amazonia From door to door to what or -- perhaps -- to whom? Astronomy Mercury: Magnetic and sinistral Tunguskas forever Biology Animal antics Processionary sperm The Changeux paradox A statement we never thought we'd see Geology Something went 'splat' in Bolivia Death in the pits Geophysics Complex ball-lightning events Revisiting the Spanish hydro-meteors of January 2000 Psychology So out-of-body experiences originate in the brain? False recovered memories Unclassified Three reasons why ETs have not contacted us ...
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... Science Frontiers ONLINE No. 150: Nov - Dec 2003 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Australians First in the New World? Origin of Clovis Culture Disputed A "Magic Number" Encoded in Three of the World's Major Pyramids Astronomy Mapping and Analyzing Dark Matter Biology Frog Poison Factory Puffin Tongue Trick? Human-chimp DNA Dissimilarities Four-Dimensional Biology A Squid's Eyes that Look Up and Down Tuberculosis and the Extinction of the Megaforna Dark Matter in our Genome Unknown Source of Animal Diversity Communication among Bacteria Geology When the Earth Gets Cracking Subduction Doesn't Check Out Chicxulub Didn't Do It! Geophysics Squishy Ball Lightning Far-Floating Fowl Psychology Natural-Born Readers Physics Mixed Anomalies ...
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... Science Frontiers ONLINE No. 153: May - Jun 2004 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology 5,500-year-old Clusters of Stone Pillars Rock Art and Rock Music Bog Butters Astronomy Parallel Double Meteor Trails Martian Bunnies? Inflation Inflated Biology Genome Fusion in Radically Different Species Animal Fasting in the Wild Nanotubular "Highways" Connect and Trap Cells Geology Hydroplaning in Geology Sand Dunes Invisible at Ground Level Another "Cookie-Cutter" Event Geophysics Will-O -The-Wisps Sicilian Sparks Psychology A Strange Property of Hyperlexia Chemistry The Darwinian Breeding of Nanostructures One "Pathological Science" May Not Be So Sick After All! ...
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... Science Frontiers ONLINE No. 152: Mar - Apr 2004 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology The Amazon's Jungles were Tamed Long Ago, but by Whom? World's most Mysterious Manuscript may be a Hoax (Voynich manuscript) Vast Network of Ancient Road Astronomy Centauro Events Curious Structures on the Surface of Mars The Dodecahedron and the 'True Earth' Biology Nanofabrication and Light Control in a Squid Beyond Water Condensation Animal Miscellany, some of which are rather Amusing Toriodal Bubbles Telling tales (FRTs) Magnetically orientated Tunnels Cells are naturally cancerous? Geology Witchers Hole and the Bermuda Triangle Intimate Encouters of Sand Dunes Geophysics Multiple Ball-Lightning event? A Burning Bush Sprouts a Lighning Leader Falsetto Thunder and Tabular Hail Psychology The Sleepwalking Bandsman Sleep and Scientific Insight Mathematics Quadamagicology (the science of magic squares) ...
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... Science Frontiers ONLINE No. 133: Jan-Feb 2001 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology The Roads of Easter Island The Ubiquitous Bird-and-Fish Motif Astronomy The Finger of God Invisible Suns and Maybe See-Through Planets Too What's Up There? Biology Couvade Chemistry Statistical Astrology Animal Miscellany Superorganisms: From Simplicity to Complexity Geology Strange Red Slime in Mine Western Oregon not Firmly Anchored to North America Geophysics Rochester Residents See Mirage of Canadian Shore 65 Miles Distant Strange Snow Sculpures Ribbons in the Sky Psychology New Proteins Rewrite Memories Unlocking Hidden Talents What do Blind People Dream? ...
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... Science Frontiers ONLINE No. 138: Nov-Dec 2001 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology When the Arctic was Warm A Down Side to Moundbuilding Astronomy The 8 Greatest Mysteries of Cosmology "Redshift is a Shaky Measuring Rod" Biology Remarkable Animal Talents and Capabilities Life as a Complex of "Dominant States" Britain More Hazardous than Ever Geology When the Antarctic was Warm Geophysics Drifting, Glowing Fog Hums Ho! Psychology Born to Enumerate Unconsciousness and its "Zombie Agents" Physics It's Time for A Bit of Generalization The Dynamics of Oleaginated Carbohydrate Parallelopipeds Mathematics Bent Magic ...
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... items (SF#60/187 and SF#85/ 187). A paleontological fact of life is that all known body plans (phyla) seem to have evolved suddenly -- within a few million years -- after the onset of the Cambrian period some 545 million years ago. Evolutionists are understandably uncomfortable with such a high rate of evolutionary innovation. Nothing like the Cambrian Explosion appears in the hundreds of millions of years of geological strata that followed. So rapid was speciation during the Cambrian Explosion that doubt is cast upon the accepted mechanisms of evolution: slow, stepwise accumulation of mutations plus natural selection. (Refs. 1 and 2) But G.A . Wray and colleagues seem to have rescued Darwinism. They have analyzed the DNA sequences of seven genes found in living animals. Assuming that these genes mutate at constant rates and working backwards in time, they calculate that animal diversification (i .e ., when chordates diverged from invertebrates) actually began about 1 billion years ago, rather than about 545 million years ago. This expansion of the time frame gives accepted evolutionary processes much more time to innovate and create all those new body plans. The evolutionists are pleased. The paleontologists, however, are in a quandry. They see nothing -- or very little -- in the Precambrian fossil record that substantiates the claim of Wray at al. Thus, molecular biology directly contradicts the findings of paleontology. Not to worry say supporters of the new and much more comfortable scenario: The Precambrian animals were so soft and "squishy" that they did not ...
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... Science Frontiers ONLINE No. 113: Sep-Oct 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Sheep Foil Cattle Guards When farmers and ranchers wish to keep livestock from exiting a fenced pasture via an entrance road, they can either install an inconvenient gate or a "cattle guard." The latter is a grid of metal bars bridging a shallow pit. Cattle cannot cross because their feet would slip between the bars. Neat idea! But some sheep, normally considered rather dull animals with miniscule initiative, have invented a scheme to thwart cattle guards. When they see greener pastures, in particular succulent gardens on the nether side of a cattle guard, one sheep volunteers (? ) or is picked (we don't know which). It altruistically flings itself across the grid and stoically endures while the rest of the flock trots across its body. The selfless sheep is usually marooned on the wrong side of the grid, but at least it has the pasture all to itself. (Anonymous; "Selfless Sacrifice Puts Sheep in Clover," London Times, March 20, 1997. Cr. A.C .A . Silk.) Comment. Yes, contrary to some animal behaviorists, animals can be altruistic. Furthermore, sheep can size up a problem, conceive a solution, and act collectively. Reference. The question of altruism in mammals is discussed in Section BMB4 in our Catalog Mammals I . To order, visit here . From Science Frontiers #113, SEP-OCT 1997 . 1997-2000 ...
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... Science Frontiers ONLINE No. 120: Nov-Dec 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Acoustical "vision" underwater When we (and all eyed animals) see an object, we are detecting light reflected from that object. When underwater, though, our vision is limited because light does not travel far. Sound, however, does; and sound is reflected from objects just as light is. This is of course the basis of underwater sonar, in which a sound source replaces the sun or a diver's floodlight. But even without an active sound source, the ocean is full of sound. Waves, rain, and the sounds made by marine animals create a background of noise that "illuminates" objects, not directly, but from the environment in general. Using only this enveloping background sound, it is possible to create acoustical images of objects. "Vision" of this sort is equivalent to "facial vision" in blind humans, who can hear objects using the environmental sound reflected from them. J. Potter and his colleagues at the National University of Singapore have constructed an array of underwater microphones that detects "slices" of the acoustical environment around it. When processed by a computer, images of objects emerge by virtue of the background noise reflected from them. This group has also estimated the ability of dolphins to detect and process background noise. They suggest that dolphins should be able to "see" objects at least 25 feet away without even using their active sonar; that is, ...
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... edges of the continents. Actually, the small methane burps are minor problems compared to the catastrophic climate changes that could be forced if just a small portion of the gases frozen under the sea floor were released into the atmosphere. Gas-hydrates are unimpressive when brought to the surface -- just dirty, fizzy ice. However, taken together, they contain more carbon than all the world's oil fields, perhaps much more. Most estimates fall between 1,700 and 11,000 billion tons, but there is one scientist who pegs these cold-storage carbon deposits at 4,100,000 billion tons. In comparison, human releases of carbon to the atmosphere via the burning of wood, gas, coal, and even the collective flatulence of all the planet's animals are trivial. Geological evidence confirms that past climate swings were associated with large injections of carbon into the atmosphere and oceans. A major contributor to these "carbon burps" may be decomposing methane hydrate. Until recently, climatologists have questioned the sizes of gas-hydrate deposits, but cores extracted from the Blake Ridge off the Carolina coast confirm the immense amounts of gases precariously locked up in sea-floor sediments. The stratum of gas hydrates in the Blake Ridge alone covers 26,000 square kilometers -- enough gas is there to supply the U.S . for 107 years. In biological terms the Blake Ridge's carbon is equal to 7% of the carbon locked up in all terrestrial biota -- animals, trees, grasses, etc. And the Blake Ridge gas ...
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... Science Frontiers ONLINE No. 120: Nov-Dec 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Miles Of Floating Forest February 13, 1905. San Francisco. "The Pacific Mail steamer City of Panama , which sailed from this port on Jan. 21 for ports on the Central American coast, had a strange experience, news of which has just been received here by mail from Acapulco. "Through miles of sea covered thickly with masses of vegetation, tree trunks, and the carcasses of dead animals the steamer sailed, the debris at times being so thick that her progress was impeded. Some of the trees were five and six feet in diameter, and the dead animals were of all descriptions. The debris was encountered on Jan. 28 in latitude 16.58 north and longitude 100.29 west. "The officers of the vessel were unable to explain the strange condition, and when they arrived at Acapulco no light was thrown on the subject. It is supposed that the floating mass was cast up by some gigantic volcanic eruption on the Central American coast." (Anonymous; New York Times, February 14, 1905. Cr. M. Piechota.) Comment. We have found no record of such a volcanic cataclysm for that time period. From Science Frontiers #120, NOV-DEC 1998 . 1998-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 114: Nov-Dec 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Gene Wars In past issues, we have mentioned: Sperm wars. Where an animal's sperm are polymorphic; some of which attack alien sperm, some dash directly to the eggs, etc. (SF#78) Selfish DNA. Where animals are merely mechanisms by which DNA perpetuates itself and expands its domain. In other words, DNA calls the shots -- not us! (SF#11) Now we learn about "gene wars." As is well known, genes are thought to control much of what goes on in a living organism. But are they only carriers of hereditary information? Not according to a long, very technical paper by L.D . Hurst et al. It seems that, like selfish DNA, genes have their own agendas. The insidiousness of this is seen in the first sentence of the paper's abstract: "Self-promoting elements (also called ultraselfish genes, selfish genes, or selfish genetic elements) are vertically transmitted genetic entities that manipulate their "host" [as in "us'] so as to promote their own spread, usually at a cost to other genes within the genome." You may not sense it, but your genes are struggling with each other, and you and/or your progeny will carry out the dictates of the victors of the "gene wars." (Hurst, Laurence D., et al; " ...
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... May-June 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Evolution Of Computers So, you thought this item was going to be about advances in chips, modems, and related hardware? It's not about software either. It's about bioware. The title of a recent article in Science began with: "Genomic Cis-Regulatory Logic." That's obscure enough to make you move on to the next article, particularly when you see that sea urchins are involved. But buried in all the technical jargon is a profound discovery: The genes of all living things, from sea urchins to humans, are in reality systems consisting of thousands of simple computational devices. Very, very briefly, the regulatory regions for animal genes, are termed "promoters." Promoters typically consist of a few hundred to several thousand bases of DNA. In the work of Yuh et al, the article's authors, these promoters are seen to perform as logic circuits, just like those bits of silicon in your PC. These tiny, DNA-based biological logic circuits determine how genes are interpreted (each gene may be interpreted in several ways), and, in the end, how lifeforms develop from embryo to adult. (Yuh, Chiou-Hwa, et al; "Genomic CisRegulatory Logic: Experimental and Computational Analysis of a Sea Urchin Gene," Science, 279:1896, 1998. Also: Wray, Gregory A.; "Promoter Logic," Science, 279:1871, 1998 ...
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... Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Pigeon-snaring Mounds Of Tonga In North America, the industrious Mound-builders excavated untold millions of basketfuls of soil which they piled up in impressive mounds. Flat-topped Monk's Mound at Cahokia, Illinois, rivals the Great Pyramid in volume. A casual observer of this huge earthen structure could only conclude that such immense labor was undertaken for some social imperative, such as worship or sacrifice. Perhaps this was the case in North America, but deep in the South Pacific, just east of Fiji, on the islands of Tonga, native peoples scraped large mounds of earth for what seems to be a frivolous purpose: pigeon-snaring ! But bear in mind that carnivory on these romantic Pacific islands was difficult because large game animals were nonexistent. Captured enemies helped solve the protein problem, but pigeons were much more common, and some species were good-sized and delicious. So much so that eventually only island royalty was allowed to catch and eat them. Pigeon poachers were whipped or executed (and maybe eaten?) In fact, pigeon snaring became a royal sport. To this end, starting at least a thousand years ago, the king's loyal subjects grubbed up the thin island soil and piled it up into high mounds. Tonga's pigeon-snaring mounds did not compete with Monk's Mound sizewise, being at most 115 feet in diameter and perhaps 15 feet high. But that's still a lot of dirt. On the tops of the mounds were smaller, beehive- ...
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... only a "special case"T. Gold is again challenging our most cherished ideas about geology and life's domain. In the subject article -- his latest paradigm-shaker -- he first reviews the abundant evidence for the existence of large quantities of primordial hydrocarbons deep within the earth and (probably) many other planets throughout the universe. Associated with these hydrocarbons is a "deep, hot, biosphere." By "deep" Gold means 100 kilometers and more. It is this combination of a deep reservoir of hydrocarbons and life forms (probably mostly bacteria) that can account for (among other things): The fact that all helium comes from oil and gas wells The fact that the composition of petroleum is not what one would expect from the decomposition of plants and animals. It is really a mixture of primordial hydrocarbons with some added biochemical by-products; that is, products of that "deep" biosphere. Since carbonaceous material is now known to be common in the solar system (comets, carbonaceous chondrites, etc.), it is likely that many other planets also possess deep stores of hydrocarbons. In these deep, warm, protected, energyrich "wombs," complex biospheres might readily evolve. In Gold's view, deep biospheres may be the rule and surface life the exception! Finally, Gold sees life as merely a natural process with no more meaning and purpose than accelerating the breaking of chemical bonds and thereby increasing entropy! "It has been said that nature abhors a vacuum, but nature doesn't care much for ...
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... Science Frontiers ONLINE No. 113: Sep-Oct 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Acoustical Pipes In Beaked Whales?Because they are relatively rare, the comings and goings of beaked whales remain largely unrecorded. These mammals are effectively toothless for predatory purposes. In fact, some marine biologists speculate that they secure their slippery prey by suddenly vacuuming them up by actuating a pumplike tongue. (AR#2 ) But how do the beaked whales find their prey in the first place? With their sonar, of course. But these superbly streamlined animals lack the huge external ears of the sonar-using bats. How do they detect the weak echoes bouncing off fleeing fish? P. Zioupos and J. Currey, at the University of York, have drawn attention to the rostrum bone that forms the beaklike upper jaw of Blaineville's beaked whale. At 2.7 grams/cubic centimeter, this bone is 50% denser than the average mammalian bone. "The bone also turned out to have unique chemical properties. It contains 35 per cent calcium by weight -- 13 per cent more than the highest value known previously. Using microscopes, the team showed that the bone is riddled with tiny tunnels. containing highly concentrated minerals." The channelled nature of this bone make it very brittle, making it unlikely that it is used as a ram in mating bouts. Zioupos and Currey propose that this uniquely structured bone is really an acoustical pipe for the beaked whales' sonar signals. (Barnett, Adrian ...
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... Science Frontiers ONLINE No. 112: Jul-Aug 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Dolphin Refrigerators Dolphins and other cetaceans have an overheating problem. For high hydrodynamic performance, their bodies must be nicely streamlined. For males, this means that their testicles must be stored internally. But dolphins are very active animals, and their muscles generate considerable heat -- too much heat for sperm to survive without some sort of special cooling system. (Recall that human males with undescended testicles may become sterile.) Since dolphins are obviously procreating, evolution must have come to the dolphins' rescue. Evolution's engineering solution installs heat exchangers in the dolphins' tails and dorsal fins. Blood heated in the vicinity of the testes is pumped through special veins in the tail and dorsal fin, where it is cooled by seawater and then returned to the dolphins' heat-sensitive innards. Female dolphins have similar heat exchangers to cool their uteri. The same article in Discover points out still another remarkable adaptation conferred on dolphins: They do not have to expend a lot of energy in diving to great depths. Below about 70 meters, the water pressure collapses their lungs so that they sink like rocks! Of course, returning to the surface does require some exertion. (Zimmer, Carl; "The Dolphin Strategy," Discover, 18:72, March 1997.) Comments. One automatically supposes that the dolphin dorsal fin is needed for stabilization when swimming -- like an airplane's rudder. But several cetacea ...
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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 Extraterrestrial Handedness Human life forms favor right-handedness over left-handedness by a 9:1 ratio. Other terrestrial animals are also asymmetrical in various ways. But on the molecular level, terrestrial biochemistry is all left-handed. As far as scientists can determine, only left-handed amino acids are incorporated into proteins. In nonlife (if such a state really exists), amino-acid molecules are right- and lefthanded in equal numbers -- as least this has been the theory up until now. Amino acids are found in substances we assume are non-life or of abiotic origin. In fact, amino acids are present in meteorites, often in substantial amounts. They are profuse in Australia's Murchison meteorite, a carbonaceous chondrite. However, analysis of the Murchison's amino acids indicates that there are slightly more (7 -9 %) left-handed than right-handed amino acids present. This extraterrestrial handedness is of great import to both cosmologists and biologists, because the carbonaceous chondrites are thought to have formed 4.5 billion years ago -- long before life on earth originated. Furthermore, some of the Murchison's amino acids have never been found in terrestrial life, and they are also slightly left-handed. For some unfathomed reason, chemical and biological evolution both tilt to the left! (Bada, Jeffrey L.; "Extraterrestrial Handedness?" Science, 275 ...
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... to a mouse, snippets of the M13's genes turned up in cells taken from the mouse's intestines, spleen, liver, and white blood cells. Most of the alien DNA was eventually rejected, but some was probably retained. In any event, alien DNA in food seems to make its way to and survive for a time in the cells of the eater. (Cohen, Philip; "Can DNA in Food Find Its Way into Cells?" New Scientist, p. 14, January 4, 1997.) Comment. We are only half-kidding when we ask if food consumption could affect the evolution of a species. After all, our cells already harbor mitochondria, which are generally admitted to have originally been free bacteria that were "consumed" by animal cells. The process even has a name: "endosymbiosis." See: SF#47/189. From Science Frontiers #112, JUL-AUG 1997 . 1997-2000 William R. Corliss ...
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