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49 pages of results.
241. When Identical Twins Are Not Identical [Science Frontiers Website]
... Science Frontiers ONLINE No. 74: Mar-Apr 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects When Identical Twins Are Not Identical Past studies of identical twins separated at birth have documented remarkable similarities between them, despite the fact that they were reared under radically different circumstances. Their physical appearances, habits, vocations, health histories, and other factors are often eerily the same. For example, two female identical twins, who had never seen each other, each wore eight rings! The upshot of such investigations is that most of a person's characteristics are genetic in origin; that is, Nature dominates nurture. But what about identical twins who are remarkably different? They can, for instance, differ appreciably in size, intellect, and behavior. In such cases, does nurture dominate nature? No! Identical twins may diverge even in the womb, where one may receive more oxygen and nutrients than the other. One also may be assailed in by viruses, bacteria, or drugs, while the other escapes ...
242. Platypus Paradoxes [Science Frontiers Website]
... echidna eccentricities in the preceding item, we now provide platypus paradoxes. Did you know that the platypus bill is a finely tuned instrument with approximately 850,000 electrical and tactile receptors? These are far more sophisticated than those found in fish. When the platypus goes foraging underwater, a furry groove closes, covering its eyes and ears, and the nostrils on the bill are sealed shut. It becomes a high-tech predator-- despite all those snide remarks about its primitive nature. The poison spurs on the back legs of the male platypus are nothing to fool around with. They can cause humans severe pain and weeks of paralysis. And a dog can lose its life when a platypus clamps its legs around its muzzle and drives in its spurs. But, ask evolutionists, how did this poison apparatus get on the hind legs? The supposed ancestors of the platypus, the reptiles, modified their salivary glands for venom delivery. How did the platypusses break from this evolutionary mold and innovate? It's not consistent with the text! The fossil record reveals that ...
243. Kamikaze Sperm [Science Frontiers Website]
... All Issues This Issue Sourcebook Project Sourcebook Subjects Kamikaze Sperm Sperm is popularly thought to have but a single purpose-- fertilization of the egg. This is not so! "Nonfertilizing sperm with special morphologies have long been known to exist in invertebrates. Until recently, abnormal sperm in mammals were considered errors in production. Now, however, Baker and Bellis have proposed that mammalian sperm, like some invertebrate sperm are polymorphic and adapted to a variety of nonfertilizing roles in sperm competition, including prevention of passage of sperm inseminated by another male. More specifically, their 'kamikaze' hypothesis proposes that deformed mammalian sperm are adapted to fa cilitate the formation and functioning of copulatory plugs." The author of the present paper, A. H. Harcourt, thinks that although some 20% of mammalian sperm, on the average, is abnormal (two heard, no heads, two tails, no tails, coiled tails, etc.) such sperm represents only errors on the assembly line. These abnormal sperm have no special purpose, at least in mammals. ( ...
244. Eusocial Beetles [Science Frontiers Website]
... " (Anonymous; "Sociable Beetles," Nature, 356:111, 1992.) Comment. Eusociality is somewhat of a puzzle in evolutionary theory because one must ask how the phenomenon arises, when it requires some individuals to forswear reproduction and thus give up the chance to pass their genes directly on to progeny. Explanations of such extreme altruism generally state that the nonbreeders are really helping to pass some (or even all) of their genes on by supporting the colony, for they are usually closely related to the breeding female. From Science Frontiers #81, MAY-JUN 1992.© 1992-2000 William R. Corliss Other Sites of Interest SIS. Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster. The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com. Free resource for people thinking about working at home. ABC dating and personals. For people looking for relationships. Place your ad free. ...
245. Folie a deux involving a dog! [Science Frontiers Website]
... some people living alone do develop close emotional bonds with their pets, and apparently, vice versa: "Ms. A, an 83-year-old widow who had lived alone for 15 years, complained that the occupant of an upstairs flat was excessively noisy and that he moved furniture around late at night to disturb her. Over a period of 6 months, she developed delusionary persecutory ideas about this man. He wanted to frighten her from her home and had started to transmit 'violet rays' through the ceiling to harm her and her 10-yearold female mongrel dog. Ms. A attributed a sprained back and chest pains to the effect of the rays and had become concerned that her dog had started scratching at night when the ray activity was at its greatest. For protection, she had placed her mattress under the kitchen table and slept there at night. She constructed what she called an 'air raid shelter' for her dog from a small table and a pile of suitcases and insisted that the dog sleep in it. When I visited Ms. A at her home, ...
246. Growth Spurts In Children [Science Frontiers Website]
... Science Frontiers ONLINE No. 85: Jan-Feb 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Growth Spurts In Children Daily length measurements (in centimeters) versus age (in years) for a male infant showing growth spurts. Despite much anecdotal evidence and the convictions of many parents, biologists have not generally recognized the reality of short, sharp growth spurts on the order of 1 centimeter in a single 24hour period. Rather, the consensus has been that child growth was divided into three stages (infancy, childhood, adolescence), each characterized by different, but steady rates of growth. This conclusion was based upon annual and quarterly length measurements. However, when children are measured more often (weekly or daily), the growth curve is seen to be step-like rather than smooth, as in the accompanying illustration. Indeed, the mean amplitude of the growth spurts was found to be about 1 centimeter; and the duration of the spurts, about one day. These spurts punctuated long intervals of no growth ...
247. How A Fly Hears What A Cricket Hears [Science Frontiers Website]
... Science Frontiers ONLINE No. 86: Mar-Apr 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects How A Fly Hears What A Cricket Hears As we all know, male crickets chirp long and loud for mates from spring until fall. That many males are successful in attracting females is obvious from this insect's population levels. Some of the singing males, however, attract parasitic flies that home in on their songs and deposit their maggots on or near them. Within 10 days, these singers are silent-- they have been consumed by the maggots. The really interesting part of this tale involves the hearing organs of the crickets and flies. Normally, they are radically different in design and frequency of operation. Crickets usually sing at frequencies above 3 kilohertz, and their ears are attuned to these high frequencies. The usual fly, on the other hand, hums and buzzes at only 100-500 hertz (cycles per second). Their ears are duly optimized at these frequencies. The cricket-hunting flies (genus Ormia ) ...
248. Science Frontiers #93, May-Jun 1994 [Science Frontiers Website]
... Science Frontiers ONLINE No. 93: May-Jun 1994 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology The spirit pond inscription stone Molecular clock places humans in new world 22,000-29,000 bp Astronomy Anomalous horizon glows seen on the moon From dust unto dust Biology Marine snow A REALLY ERRANT PIGEON A REALLY ERRANT SEAL Cold-blooded birds? Why snakes have forked tongues Lactating male bats Geology The nebraska sand hills: wind or water deposits? The giant crystal at the heart of the earth Geophysics Strange explosions at sasovo, in russia Just plane weird Psychology The healing of rents in the natural order Mathematics Btt and surreality Other Sites of Interest SIS. Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster. The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com. Free resource for people thinking about working at home. ABC dating and personals. For people looking for relationships. Place your ad free. ...
249. Some Shaky Observations [Science Frontiers Website]
... Some Shaky Observations Back in SF#65, we offered an item on how wood turtles stomp the ground to force earthworms out of their burrows. (When humans do this-- and they do-- it is called "grunting for worms!) Other animals also use vibrations for communication and, rather surprisingly, for cutting leaves. Malaysian tree frogs. Zoologists already knew that Puerto Rican white-lipped frogs use vibrations to communicate amongst themselves. The Malaysian tree frog can now be added to the list of substrate vibrators. The female will sit on a reed or small sapling and tap out a "come-hither" message with her toes. The message goes forth in minute seismic waves. The males detect these vibrations and proceed, sometimes in great numbers, to the source of the vibrations, and the species is thereby perpetuated. (Mestel, Rosie; "Courting Tree Frogs Make the Earth Move," New Scientist, p. 8, December 10, 1994.) Leaf-cutting ants. Leaf-cutting ants neatly excise penny-size pieces of leaves and tote them back ...
250. The Untapped Human Mind [Science Frontiers Website]
... Science Frontiers ONLINE No. 99: May-Jun 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Untapped Human Mind In 1994, J. Wilding and E. Valentine, both at the University of London, provided the British Journal of Psychology with two studies of people claiming to have exceptional memories. In their second paper (Ref. 2), they detailed the mental workings of TM, a 25-year-old male, and an accomplished user of mnemonics. TM astounds audiences with his seemingly impossible memory feats. These feats, however, are no mystery to TM, and he has carefully explained how it is all mnemonics and nothing paranormal. But there remains the clear implication is that the normal human mind is underestimated and underused. TM's "performances" involve six demonstrations, two of which we now elaborate upon. Demonstration 2. TM asks audiences for birthdates and very quickly gives the day of birth. He has explained this "gift" thusly: "The day of birth calculations were originally carried out through ...
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