... Science Frontiers ONLINE No. 131: SEP-OCT 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Earth Made Mars Different At the June, 2000, meeting of the Society for Scientific Exploration, R.A . Day presented a paper that: Itemized the many important ways n which Mars differs from the other inner planets and moons; Proposed a mechanism that might lave created these stark differences; and Identified the earth as the most likely perpetrator of this celestial catastrophism. Day's abstract follows: Mars has surface features that are not seen on inner planets or moons. These are hemispheric asymmetries, idiosyncratic surface fracturing, localized vulcanism, altitude differences, chains of pits, and the nature of dry river-like channels. Other features include extensive loss of an early atmosphere and liquid water. There is interest in the lower-altitude northern region, with its surface formed after the period of heavy bombardment, as a possible ocean basin. The evidence for this is very sparse: no river deltas, no river networks, little debris at the ends of the catastrophic flow channels. The surface is consistent with the stripping anticipated by a Roche-limit encounter. The low-density Martian moons appear to be unconsolidated material of higher density; they appear to be from low-gravity aggregation of that part of the Martian debris that went into orbit as a short-lived ring. A Roche-limit encounter is invoked as a reasonable hypothesis to explain these features. Earth, Mars' nearest planetary neighbor, may have ...

... Science Frontiers ONLINE No. 128: MAR-APR 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Different Sort of Crop Circle Ball lightning reports are very common, but here is one worth recording because of its unusual physical effects. It was investigated and reported by O. Stummer. In May or June of 1988 or 1989 around 2 P.M . CEST, Mr. Alois Fuehrer, a farmer of 38 years from Jungschlag, a small village south of Ottenschlag, northern Lower Austria, 850 meters above sea level, returned early from fieldwork because a heavy thunderstorm moved in from the north-west. Fuehrer stood in the open on a wooden plank at the rear of the diesel tractor driven by his father. The vehicle had passed the last Ottenschlag houses southbound, when he noticed a falling object. It was round, 20 centimeters across, and "seemed to come down like a toy balloon", vertical, soundless, without rotation. It was brilliant white, a steady light, and had "something like a smoke trail". Only 20 to 30 meters to the right of the tractor and of the road, after 4 to 6 seconds, the object hit the surface of a green summer barley field, flashed up and "exploded with a loud, very high pitched bang". Mr. Fuehrer said "this was no thunder", and noticed no heat or pressure wave. However, what he felt caused panic--a tingling, and his hairs stood on end on his head ...

... Science Frontiers ONLINE No. 130: JUL-AUG 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Attention, Pupils!The following questions appeared in the December 11, 1999, issue of the New Scientist: Why do some animals have a non-circular pupil? Cats and some snakes have a vertical shape yet horses and goats have a horizontal one. What is the reason behind the differences and, more importantly, how do the different shapes affect how animals actually see things? The answer for the vertical slit is that it improves an animal's focus in the direction perpendicular to the slit. Thus, cats and snakes hunting close to the ground can better detect their prey over a wide horizontal field. But how about the horses, goats and other grazing animals that must keep their eyes open for predators across a wide horizon? Pupils with horizontal slits would seem to defeat this purpose. Ah, but when they lower their heads to graze, their vertical pupils become horizontal. Simple! (Anonymous; "Eye to Eye," New Scientist, p. 85, December 11, 1999.) Comments. But puzzles remain, otherwise we wouldn't address this subject. (1 ) Some snakes have round pupils (as in the illustration) having apparently been subjected to different environmental forces; (2 ) Of all the 9,000+ species of birds, only the skimmers own pupils with vertical slits. You would expect ground-feeding birds like robins and larks to also have them; ( ...

... Science Frontiers ONLINE No. 129: MAY-JUN 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects If Fingerprints Don't Lie, Neither to Toe Prints J. Chilcutt is a highly regarded finger-print expert for the Conroe, Texas, Police Department. In his spare time, he collects fingerprints and toe prints from other primates. Working with zoo officials, who were naturally skeptical at first, Chilcutt has amassed a collection of about 1,000 nonhuman primate prints. He has discovered that print characteristics differ markedly from one species to another. When Chilcutt learned that J. Meldren, a professor of anatomy at Idaho State University, had accumulated 100 or so casts of Bigfoot prints, he had to check out their dermal whorls and arches. Some of Meldren's casts turned out to be obvious fakes upon which human fingerprints had been impressed. But a few specimens surprised him. The print ridges on the bottoms of five castings -- which were taken at different times and locations -- flowed lengthwise along the foot, unlike human prints which flow from side to side. "The skeptic in me had to believe that (all of the prints were from) the same species of animal," Chilcutt said. "I believe that this is an animal in the Pacific Northwest that we have never documented." (Rice, Harvey; "Is Something Afoot with Bigfoot? Print Expert Thinks So," Houston Chronicle, February 20, 2000. Cr. D. Phelps.) From Science Frontiers # ...

... seem to be superimposed. The earliest canvas consists of the geoglyphs, which were incised beginning about 200 B.C . Peel away these, and we are left with the geometrical figures and straight lines. These seem to have been inscribed starting about 600 A.D . -- a time of severe drought, which may be a clue to their purpose. Next, strip off the geoglyphs (trapezoids and such), and a seeming mishmash of straight lines survives. But most are not random when analyzed. Most converge spoke-like upon 62 or more "ray centers." Thus, the Nazca Plain seems to be a 3-page book: biomorphs, geoglyphs, and spoked ray-centers. They all overlap. It's all a gigantic Rorschach test; and different observers see different things! A Nazca biomorph (monkey with spiral tail) overlain by an abstract, unexplained geoglyph. See Book Supplement for still another Nazca figure. Of course, there are doodles on this 400-square-mile canvas that don't fit on any of the three pages. We'll have to ignore them for now. The archeoastronomers first tried to read something meaningful into the Nazca lines, but they were disappointed. Computer analyses revealed no significant connections with the rising and settings of heavenly bodies. Next, some tried to relate the biomorphs to the celestial sphere. Did a terrestrial bird figure point toward a bird-like grouping of stars? A few earth-sky bird connections are interesting in this regard, but generally the idea that the Nazca lines ...

... Science Frontiers ONLINE No. 129: MAY-JUN 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects From Nature's Atelier One of geology's more fascinating mysteries concerns the formation of concretions. Concretions are structures within rock that differ in form and/or composition from the matrix. Often, they form around an impurity of some sort, say, a tiny fossil. If concretions were all nicely spherical or crystalline in shape, we might be able to explain them as we do with the oyster's pearl and winter's snow-flake. Unfortunately for the theorists, concretions usually come in bizarre shapes -- shapes an avant garde sculptor might appreciate. Not only do concretions come in weird geometries but they may be replicated in prodigious numbers, like the famous Kimmeridge "coal money." Additionally, some flint concretions are arrayed in thick chalk beds in amazingly regular three-dimensional arrays that tax the ingenuity of any theorist. To illustrate the extremes of nature's inorganic-chemical imagination, we now provide some illustrations from a recent two-part article in Rocks & Minerals and one of our catalog volumes. (Dietrich, R.V .; "Carbonate Concretions,' Rocks & Minerals, 74:266 and 74:335, 1999. ESA3 in Neglected Geological Anomalies.) Carbonate concretions (" imatra stones") from Finland. Virtually identical concretions occur in the Connecticut River Valley. Vertical lines of flint concretions in chalk cliffs near Norfolk, England. Presumably the 3-dimensional array ...

... Science Frontiers ONLINE No. 132: NOV-DEC 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects It Depends on How you Look at It!The "Face on Mars," that is; that eroded hill in the Cydonia region that vaguely resembles a human face. When a recent photo of the "Face" taken by the Mars Global Surveyor (MGS) was published far and wide in the science press, we thought the matter had finally been settled. The photo showed a strange hill obviously sculpted by natural forces. No question about it; there was not a soupcon of artificiality. But it now seems that if you look at the "Face" at other lighting angles and process the same data in different ways, the "Face" reappears looking more artificial than ever. T. Van Flandern elaborates: The MGS spacecraft took a high resolution photo of the "Face on Mars" in April 1998. That image suffered from four handicaps: a low viewing angle; a low sun angle from the direction of under the "chin"; an almost complete lack of contrast; and enough cloudiness to scatter most of the light and eliminate shadows. To add to these difficult circumstances, JPL-MIPL [Jet Propulsion Laboratory-Mission Image Processing Laboratory] personnel, apparently judging that the controversy over artificiality would not be ended when the actual photo was released, processed the image through two filters having the effect of flattening and suppressing image details. This step is documented at a JPL web site. Here we ...

... East. Cross section of a typical Iranian qanat. Unlike the exposed spring of the Bahrainian qanat, the water source here is at the bottom of a deep well. (From: Ancient Infrastructure) In our recent catalog, Ancient Infra-structure , we describe the qanats of Iran. (See figure.) Some of these shaft-tunnel structures run for miles and re-present a prodigious amount of labor. How prodigious? In Iran alone there are about 37,500 qanats with an aggregate length of some 100,000 miles! Qanats rank right up there with the Inca roads and the Great Wall of China as wonders of the ancient world. After reading our catalog section on Iranian qanats, E. von Fange informs us that the qanats of Bahrain pose a set of different problems. The Bahrainian qanats are easy to follow across the desert because the access shafts protrude a few feet above the sand. As one follows them up-slope for a mile or two, some greenery appears in the distance---low bushes perhaps. A closer approach proves instead that the greenery is actually the tops of palms. These trees are growing in a sunken oval area about 200 yards long girt by a wall 20-30 feet high. Outside, the desert sand reaches nearly to the top of the wall; inside, steps lead down to limestone bedrock from which springs of crystal-clear water flow. The qanat entrance can be seen down near the bottom of the wall, but the water level is now too low to feed the abandoned qanat. In ...

... long ago in the Gobi. An important clue occurs during the summer, when heavy thunderstorms sometimes trigger avalanches of wet sand called "debris flows". These sandslides may be 900 feet long, 50 feet wide, and 4 feet deep. Although they have occasionally partly buried ranch buildings, they are too slow and small to endangerlivestock and wild animals. But what if they were much larger and faster? Back on the Gobi, geologists remarked that the rich fossil deposits were found in structureless sandstone; i.e ., there was none of the cross-bedding seen in sandstones elsewhere in the region. Furthermore, fossils were extremely rare in the cross-bedded sandstones, which were built up over long periods of time. It looked as if the structureless, fossiliferous sandstones were sandslides differing from those in Nebraska in their much greater magnitude. But why were the Gobi sandslides so much larger and, apparently, faster? The next clue came from the recent devastating mudflows in California and Central America caused by heavy rains. These debris flows were made deadly when the infiltrating rainwater was blocked by bedrock. The accumulating water turned the soil into a muddy slurries that raced down hills at high velocities, overtaking animals (including many people) trying to escape. There is no bedrock in the Gobi, but a little digging encountered impervious layers of caliche. The Gobi caliche consists of layers of sandgrains cemented together by calcium carbonate. Typically located 2-3 feet below the dune surfaces, the caliche layers were evidence that the Gobi had experienced benign periods in the past with low winds ...

... that when sodium and chlorine atoms arrange themselves to build salt crystals that they are simply obeying the well-known laws of physics. In other words, salt crystals are "natural." "Intelligent design" need not be invoked in explaining their existence. This is OK for salt crystals but can we say the same for biological forms such as proteins and, ultimately, human beings? Are these more complex biological forms also natural; that is, reducible to and explainable by the laws of physics? Human beings certainly seem irreducible; and some proteins are so large and complex that one is unsure that physics is up to the task of explaining these tangled structures consisting many hundreds of atoms. Some of these doubts have been relieved by recent advances in protein chemistry. It appears that the different types of protein folds, which number in the thousands, can be classified and sorted into distinct structural families -- just like the much simpler crystals of salt, quartz, galena, etc fall into orderly classes. The clear implication is that protein folds and, by extension via further research, the protein molecules themselves, are also natural and reducible just like the salt crystals. If proteins are natural, perhaps even more complex biological forms are also, and so on up the complexity ladder to viruses (which often look like crystals through the microscope), bacteria, and even (gasp!) mammals. This is, of course, reductionism in the extreme. But the successes with protein folding have led two New Zealand biochemists to speculate as follows: If it does turn out ...

... unusual luminosities were initially reported from the region, 8 of them before the foreshock, being in effect earthquake precursors. Afterwards, residents were queried for details and additional observations. A total of 46 reports sufficiently detailed for analysis were obtained. These luminous phenomena were classified according to a scheme proposed by F. Montandon in 1948. Montandon's five categories are: Seismic lightning (no thunder); Luminous bands in atmosphere; Globular incandescent masses; Fire tongues, small mobile flames near the ground, like will-o '- the wisps; and Flames emerging from the ground. The globular incandescent masses were by far the most common type of earthquake light during this Canadian "flap." Of these, F. St-Laurent writes: There were twenty-two reports coming from different places. Often they were seen far from the epicenter or when the seismic activity was low or quiet. Some were stationary (in one case, the yellow and orange mass presented a horizontal elongated form), others were seen emerging from the ground, some were very fast-moving near the ground, one was seen attached to a luminous band -- all as described by Montandon. (St-Laurent, F.; "The Saguenay, Quebec, Earthquake Lights of November 1988-January 1989," Seismological Research Letters, 71:160, 2000. Cr. J. Derr) From Science Frontiers #130, JUL-AUG 2000 . 2000 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster . ...

... on September 14, 1186, and February 19, 1524, but the weather refused to cooperate with the planets. Humanity survived nicely. This does not mean that historical upheavals are never correlated with planetary conjunctions. If a society believes strongly enough in the power of the stars and planets to shape human destiny, events may be correlated with the heavens. Such was the case in ancient China. In China, the "Mandate of Heaven" concept has been used since ancient times as both a framework for history and a guide to future actions. The basic idea is that Heaven awards ruling power to a sage-king because of his virtue. His descendants remain as Earthly deputies until they become corrupted, whereupon outraged Heaven gives signs in the sky that the Mandate has passed on to a different sage-king to continue the cycle. Three transfers of the Heavenly Man-date marked the beginnings of the Hsu, Shang, and Chou Dynasties. In fact, the tightest grouping of the five visible planets in the period from 3,000 B.C . to 5,000 A.D . (8 ,020 years!), occurred, on February 26, 1953 B.C ., when they were aligned in a 4.33 arc. This was seen by the Chinese power brokers as a celestial command to begin a new social order. Thus was born the Hsu Dynasty. Similar, but looser, conjunctions ushered n the Shang Dynasty (December 20, L576 B.C .) and Chou Dynasty (May 28. L059 B.C . ...

... Science Frontiers ONLINE No. 129: MAY-JUN 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Sound of Shapes The ability of some humans to determine the pitch of a musical note in the absence of a reference note (" perfect pitch") has been a favorite topic in Science Frontiers (SF #99 , #102 , and #111 ). It now seems that the human ear-brain combination can also discern the shapes and dimensions of thin, vibrating plates by the sound they make. In one type of experiment, conducted by A.J . Kunkler-Peck (Brandeis University) and M.T . Turvey (University of Connecticut), subjects gave surprisingly accurate estimates of the heights and widths of three different vibrating plates. The plates were concealed behind a screen, but the subjects could remotely control a striker. In further experiments, other subjects could distinguish between the sounds of circular, rectangular, and triangular plates. (Anonymous; "Listen to the Shapes," Science News, 157:171, 2000.) Comment. We all know from experience that small, thin plates produce higher pitched sounds that larger plates. How-ever, the ability to assign accurate dimensions without some training is surprising. The same can be said for the identification of shapes. Who, for ex-ample, has been exposed to vibrating, triangular-shaped plates in ordinary life? Could we be dealing here with another innate talent that, like perfect pitch, seems to have no adaptive value ...

... . (Pizzeria, T., and Birkhead, T.R .; "Female Feral Fowl Eject Sperm of Sub-dominant Males," Nature, 405:787, 2000.) Comment. An interesting sort of sperm ejection occurs among Dunnocks, small brown birds common in English gardens. Alpha males try to prevent matings by lower-ranking males but are rarely successful. Most Dunnock matings are preceded by a ritual-like phenomenon called "cloaca-pecking." The female raises her tail exposing the cloaca. Instead of mating, the anticipating male pecks at the cloaca, an action that stimulates a pumping action and ejection of a droplet of sperm from previous matings. After the male inspects the droplet, normal mating follows. This bizarre scenario required the coordinated evolution of two different kinds of behavior (male and female) as well as the development of the female's sperm-ejection mechanism. See BBB23 in Biological Anomalies: Birds . From Science Frontiers #131, SEP-OCT 2000 . 2000 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster . The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com . Free resource for people thinking about working at home. ABC dating and personals . For people looking for relationships. Place your ad free. ...

... is the quantization of information. Every inquiry science makes into the nature of the universe, says Zeilinger, can be reduced to a yes-or-no question; i.e ., a 1 or 0. To a scientist, nature is really like a person on a witness stand being hammered by a prosecutor (i .e ., a scientist) with yes-or-no questions. In other words, nature appears quantized because our knowledge of it is quantized. (von Baeyer, Hans Christian; "In the Beginning Was the Bit," New Scientist, p. 26, February 17, 2001.) Comment. It follows, we presume, that if information were not quantized and were, say, analog in nature, the universe would look entirely different. From Science Frontiers #138, NOV-DEC 2001 . 2001 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. ...

... asteroid Eros (35-kilometers long) from the spacecraft NEAR-Shoemaker have added two new phenomena to the list of asteroid enigmas. Boulders. Eros is covered with huge boulders -- perhaps a million of them over 8-meters wide. The boulders are likely just accreted solar-system debris; but why are they strewn naked on the surface of Eros instead of being intermixed with other rocky debris? Speculation is that the large boulders were coaxed to the surface preferentially over the eons by seismic vibrations -- said vibrations being caused by multitudinous impacts. This type of jostling action also explains why Brazil nuts greet you when you open a well-travelled can of mixed nuts! Ponds and beaches. The fine debris coating Eros may also have responded to the same vibrations, but in different ways. It sort of "flowed" downhill to form curious flat features resembling ponds. Between the ponds and rough terrain, the fine debris has also built up transition zones that look like beaches. Cormell's J. Veverka isn't betting on any of the proposed theories as yet. He declared: We're facing processes we're not familiar with. I truly don't know what's going on. (Kerr, Richard A.; "Strange Doings on a NEAR-Struck Asteroid," Science, 291: 1467, 2001.) Comment. It is interesting to observe how vibrations may emulate the action of water in creating sandy topography. As a terrestrial case in point, the famed Mima Mounds in Washington state may have been created ...

... Exploration, S. Krippner and L. Faith reported on their analysis of 1,666 dream reports. In this large sample, they identified 134 dreams that they deemed anomalous in one way or another. They classified these dreams as follows: In telepathic dream reports, it is the dreamer's impression that the dream correctly identified the thoughts of someone in external reality at the time of the dream. Mutual dreams are those in which the dreamer and someone else report similar dreams on the same night. Clairvoyant dreams concern distant events about which the dreamer had no ordinary way of knowing. In precognitive dreams, information is reported about an event that had not taken place at the time of the dream. A past-life dream concerns past events in which the dreamer participated but with a different identity than characterizes his or her current life. Initiation dreams introduce the dreamer to a new worldview, or to a new mission in life. In visitation dreams, the dreamer is visited by ancestors, spirits, or deities, and is given messages or counsel by them. Lucid, healing, and out-of-body dreams were also deemed anomalous but were not defined in the abstract. In fact, lucid dreams were the most common type of anomalous dream. Out-of-body dreams came next. Precognitive dreams were third in frequency. (Krippner, Stanley, and Faith, Laura; "Anomalous Dreams: A Cross-Cultural Study," Society for Scientific Exploration paper, 2000.) Comments. Lucid dreams are especially vivid and, in addition, under the ...

... s the way the universe bounces What follows is a chain of ideas (perhaps "speculations" is a better word) that was recently unleashed by L. Smolin in the journal Classical and Quantum Gravity (9 :173). At stake here is the very nature of Nature herself. We begin with the notion of anthropic cosmology, in which the physical constants of the universe are identified as having just the "right" values to allow the existence of stars, planets, carbon compounds, and the other ingredients of human life. (Just why this state of affairs prevails is a question rarely addressed!) Adherents of anthropic cosmology hold that our "human-friendly" universe is just one of many universes populating a larger metauniverse. These "other" universes are thought to have different values of the fundamental physical constants (viz., the mass of the proton) and, in consequence, wildly different forms of life. In nonhuman universes, there could even be entities for which our word "life" is inadequate. The second idea is that of an oscillating universe. In this concept, universes expand just so far and then collapse back into the "singularities" (i .e ., black holes) from which they arose. Then, Phoenix-like, they bounce back and reexpand into new universes -- ones with slightly different physical constants. These rebounding universes are in a sense mutated universes, which have been slightly modified during the physical trauma of collapsing into singularities. Now comes a stimulating thought. The most abundant sort of universe occupying the ...

... 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 Math's mystery In extolling J. Barrow's new book, Pi in the Sky , T. Siegfried first reiterates a point made in past issues of SF, namely, that mathematics is a logical system and that we have no right to expect it is correspond structurely with a physical system. In other words, math and nature are fundamentally different entities. Nevertheless, as Barrow stated in a recent interview: "If we were just inventing mathematics from our everyday experience, we would find that it would work really rather well in those areas from which that intuition was gained. But we find almost the opposite...It works most powerfully and persuasively in areas that are farthest removed from the everyday experience that has led to it." Mathematics, for example, leads to verities in quantum mechanics far outside the realm of daily experience. Why is this so? The puzzle deepens when one discovers that there are different kinds of math based upon different forms of logic (as in Euclidian and non-Euclidian geometries). Some brands of mathematics mirror reality better than others. Why? In trying to dispose of these "whys," both matematicians and scientists fall back on the anthropic principle with all its unsatisfying tautological overtones: ". .. the universe is the way it is because that's the way it has to be for anybody to be around to study it. And perhaps math works ...

... Science Frontiers ONLINE No. 89: Sep-Oct 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Electric Fish Not Backward In Data Processing The incredible sophistication of the brain and nervous system of fish using active electric sensing is evident in the South American fish Eigenmannia . This fish (different from the knife fish above) emits electric pulses at frequencies betwen 250 and 600 per second for electrolocation and communication. M. Kawasaki, at the University of Virginia, has investigated what happens when two of these fish operating on similar frequencies meet. Ordinarily, the fish would jam each other's sensory apparatus and "blind" each other. To circumvent this Eigenmannia has evolved a "jamming avoidance response," in which they both shift their pulse frequencies away from each other. To accomplish this, the fish must be able to detect time disparities between the two sets of signals less than 1 microsecond long. Their individual electroreceptors are not capable of handling such small time differences. Kawasaki has concluded that the jamming avoidance response can come only from highly sophisticated signal processing in the fish's central nervous system. (Kawasaki, Masashi; "Temporal Hyperacuity in the Gymnotiform Electric Fish Eigenmannia ," American Zoologist , 33:86, 1993.) Comment. Echo-locating bats and dolphins also possess sophisticated data processing apparatus for analyzing the echos they receive back from their prey and surroundings. It will be interesting to discover if evolution has come up with similar organic "components" for handling acoustic and electric signals. Further, we know ...

... Science Frontiers ONLINE No. 89: Sep-Oct 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Homo erectus never existed!( Left) Homo erectus skull. (Right) Homo sapiens skull. Are these markedly different skulls representative of two different species or merely variants of the same species? The record of human evolution is littered with skeletons -- not only the legitimate bones of early hominids but also with discarded evolutionary charts and discredited taxons. A taxon is a welldefined biological classification, such as a phylum or species. We modern humans are given the label Homo sapiens. We are told with great assurance that we evolved from earlier hominids, such as Homo erectus and, perhaps, Homo nean derthalis. Homo erectus has long been a key feature of all those charts of human evolution decorating our textbooks. But this venerable taxon is getting fuzzier and fuzzier. "Reappraisal by Cornell University paleontologists of a 200,000-year-old skull from India's Narmada River suggests that the fossil was probably a Home sapiens -- not a Homo erectus -- and marks another spot of the globe where humans may have evolved. .. .. . "The reappraisal of Narmada Man preceded the recently announced discovery of two Middle Pleistocene fossils from Yunxian, China, that seem to share the traits of Homo erectus and Homo sapiens. Kennedy would like to bury the taxon Homo erectus altogether, "Those who would like to keep the taxon see a 200,000year-old Narmada Man as a last gasp for Homo ...

... A. Takahashi, who is a professor of nuclear engineering at Osaka University. "He says his cold-fusion cell produced excess heat at an average rate of 100 watts for months at a time. That's up to 40 times more power than he was putting into the cell, and more power per unit volume (of palladium) than is generated by a fuel rod in a nuclear reactor. " Takahashi has made several modifications in his cold-fusion cell. Rather than palladium rods, he employs small sheets. In addition, surmising that cold-fusion phenomena might prosper better under transient conditions, he varies cell current. Takahashi, however, measures only a few of the neutrons expected from the usual nuclear fusion reactions. Undaunted, he remarks, "This is a different ballgame, and it could be a different reaction." Indeed, some exotic fusion reactions do generate neutrons. (Freedman, David H.; "A Japanese Claim Generates New Heat," Science, 256:438, 1992.) From Science Frontiers #82, JUL-AUG 1992 . 1992-2000 William R. Corliss ...

... 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 Hunt For The Magnetoreceptor When magnetite particles were found in organisms from bacteria to bats, it was assumed that here was the long sought magnetoreceptor which animals used for magnetic navigation. But so far, biologists do not have the slightest notion how such magnetite particles can be turned into a "magnetic sense," which sends the brain information on the direction of the geomagnetic field or, perhaps, draws a magnetic map of sorts. A completely different sort of magnetreceptor is now under investigation, one that humans may also unknowingly possess. It utilizes special photoreceptors that employ an electron-spin resonance process which is modulated by the geomagnetic field. Some of our very sensitive magnetometers use similar phenomena. The biological version of such a receptor would be connected to the brain, as the eye is, and send signals as to the direction of the earth's magnetic field. Sounds interesting, but is there any basis for thinking such a sophisticated gadget could have evolved? It seems that some experiments with newts by J.B . Phillips and S.C . Borland support the idea. The newts were first trained to orient themselves in a certain direction with respect to the geomagnetic field. "When tested under one of four artificial field alignments (magnetic north at geographic north, east, south or west), the newts kept their training directions constant relative to the magnetic rather than the geographic system of reference, but they selected ...

... 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. In infants, for example, 90-95% of their development is growth-free! (Lampl, M., et al; "Saltation and Stasis: A Model of Human Growth," Science, 258:801, 1992.) From Science Frontiers #85, JAN-FEB 1993 . 1993-2000 William R. Corliss ...

... Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Early Life Surprisingly Diverse The three life forms sketched below are tiny microorganisms, not the worms they appear to be. They are thought to be bacteria, for they closely resemble modern cyanobacteria. What is most important about these fossilized micro-organisms is that they were found in the Apex chert of Western Australia. The Apex chert is designated Early Archean and assigned an age of 3.465 billion years [Four significant figures!]. It is rare to find any fossils at all in rocks this old, but apparently the Apex chert escaped most of the fossil-destroying metamorphism afflicting most Precambrian formations. Even more remarkable is the diversity of these suspected bacteria. J.W . Schopf reports finding no less than eleven different kinds so far--and our planet was only a few hundred million years old at the time the Apex chert was formed. Schopf's discoveries generate at least three questions: How could life have originated and diversified to such an extent in just a few hundred millions years? Why after such rapid diversification did these microorganisms remain essentially unchanged for the next 3.465 billion years? Such stasis, common in biology, is puzzling. If these microorganisms are really cyanobacteria, they would have released oxygen to the atmosphere. Is the standard assumption that the earth's atmosphere lacked oxygen until 2.2 billion years ago correct? (Schopf, J. William; "Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life," Science, 260 ...