... 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 Precariously Balanced Rocks As Earthquake Detectors PBRs, such a this "rocking stone" near Peekskill, NY, signify a lack of recent quakes in the area Precariously balanced rocks (PBRs) are rather common where earthquakes have never occurred. In this sense, balanced rocks are measures of seismic stability. For example, says J. Brune, you won't find PBRs within 10 miles of spots where quakes have shaken the ground over the past few thousand years. To illustrate: "Rocks stacked in piles and balanced on their narrow ends on Yucca Mountain near the Nevada border with California, he said, have not moved in at least 10,000 years and perhaps as many as 100,000 years, judging from the depth of "rock varnish," or weathering, on their exposed surfaces." Looking for PBRs is not really as useless as it sounds, for they are indicators of stability to construction engineers planning nuclear waste disposal sites and similar projects requiring long-term seismic quiet. (Petit, Charles; "Seismologist Studies Precariously Balanced Rocks," San Francisco Chronicle, December 8, 1992. Cr. J. Covey) Comment. How do rocks become "precariously balanced" in the first place? Melting glaciers and snow packs are known to ease their cargos of rocky debris gently down into unstable configurations. From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...

... 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 Hypnosis And Skin Temperature The mind can affect the body in many ways. One of the most bizarre is the use of hypnosis to raise skin temperature on selected parts of the body. A recently published example of this phenomenon was observed by P. Hajek et al, at the Institute of Physiology in Prague: "Eight patients with atopic eczema and six healthy subjects were given hypnotic suggestion to feel pain in the upper part of the back and in one case on the palm. An average local increase in skin temperature of 0.6 C (detected by thermovision) occurred under this condition. For some patients, cutaneous pain threshold was increased before the experiment by means of repetitive hypnotic suggestion of analgesia. These subjects reported feeling no pain subjectively, but the local change in skin temperature was equal in both cases. The results suggest a central mechanism induced by measuring changes in pain threshold in the skin, which changes are independent of local changes in blood flow." (Hajek, P., et al; "Increase in Cutaneous Temperature Induced by Hypnotic Suggestion of Pain," Perceptual and Motor Skills, 74:737, 1992.) From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...

... 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 All roads lead to 123 "Start with any number that is a string of digits -- , say, 9 288 759 -- and count the number of even digits, the number of odd digits, and the total number of digits it contains. These are 3 (three evens), 4 (four odds), and 7 (seven is the total number of digits), respectively. Use these digits to form the next string or number, 347. If you repeat the process with 347, you get 1, 2, 3. If you repeat with 123, you get 123 again. The number 123, with respect to this process and universe of numbers, is a mathematical black hole." We have a black hole because we cannot escape, just as spaceships are doomed when captured by a physical black hole! You end up with 123 regardless of the number you start with. Other sorts of mathematical black holes exist, such as the Collatz Conjecture, but we must not fall into them because our printer awaits. (Ecker, Michael; "Caution: Black Holes at Work," New Scientist, p. 38, December 19/26, 1992.) From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...

... 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 Hypnosis And Basketball Hypnosis has often been applied to imroving various aspects of human performance -- both intellectual and physical -- with debatable success. Basketball may now be added to this file, according to a recent paper by E.H . Schreiber: "Throughout one basketball season 12 male and 12 female basketball players were interviewed prior to individual and group sessions with hypnosis. The athlete's shooting scores were compared with those of the previous basketball season. The hypnosis groups showed higher cumulative scores for shooting than players in the control group." (Schreiber, Elliott H.; "Using Hypnosis to Improve Performance of College Basketball Players," Perceptual and Motor Skills , 72:536, 1991.) From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...

... 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 The Acoustics Of Rock Art S. Waller has visited rock art sites in Europe, North America, and Australia. Standing well back from the painted walls, he claps or creates percussion sounds, and records the echos bouncing back. A casual observer might be tempted to call 911. It turns out, though, that rock art seems to be placed intentionally where echos are not only unusually loud but are also related to the pictured subject matter. Where hooved animals are depicted, one easily evokes echos of a running herd. If a person is drawn, the echos of voices seem to emanate from the picture itself! "At open air sites with paintings, Waller found that echos reverberate on average at a level 8 decibels above the level of the background. At sites without art the average was 3 decibels. In deep caves such as Lascaux and Font-de-Gaume in France, echos in painted chambers produce sound levels of between 23 and 31 decibels. Deep cave walls painted with cats produce sounds from about 1 to 7 decibels. In contrast, surfaces without paint are 'totally flat'." What did the ancient artists have against cats? (Dayton, Leigh; "Rock Art Evokes Beastly Echos of the Past," New Scientist, p. 14, November 28, 1992.) From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 104: Mar-Apr 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects An Antarctic Bone Bed W. Zinsmeister was accustomed to scoff at the idea that the Age of Dinosaurs ended violently with the impact of a giant asteroid some 65 million years ago. He always asked: "Where's the layer of burnt and twisted dinosaur bones?" His certainty was shaken, however, when he began mapping fossil deposits on Seymour Island, Antarctica. He didn't find the dinosaur bones but rather a giant bed of fish bones at least 50 square kilometers in area. Some sort of catastrophe must have annihilated untold millions of fish. And guess what? This great bone bed was deposited directly on top of that layer of extraterrestrial iridium that marks the 65-million-year-old Cretaceous Tertiary boundary at many sites around the world. (Hecht, Jeff; "The Island Where the Fish Had Their Chips," New Scientist, p. 16, November 11, 1995) Cross reference. Bone beds of fish and other creatures are filed under ESB13X2 in Anomalies in Geology. To order this catalog, see here . From Science Frontiers #104, MAR-APR 1996 . 1996-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Life-creation from a different perspective The preceding discussion of life's origin at hydrothermal vents was penned by an oceanographer. Astronomers, it seems, prefer different scenarios. C. Chyba and C. Sagan, in a major review article in Nature, see a two-fold problem: (1 ) identifying the source of the raw materials; and (2 ) identifying the source(s ) of energy required for the synthesis of complex organic chemicals. First, they point to the steady drizzle of tiny, organic-rich particles drifting down to earth from cometary debris. These particles, which even carry spacesynthesized amino acids down to the earth's surface, seem likely chemical precursors of life. However, the atmosphere is also a potential source of prebiotic chemicals -- providing energy sources are available. Chyba and Sagan suggest as sources: lightning, ultraviolet radiation, and the shock energy derived from meteorite/asteroid/comet impacts. Together these energy sources, especially ultraviolet light, might synthesize thousands of tons of complex organic compounds each year. (Chyba, Christopher, and Sagan, Carl; "Endogenous Production, Exogenous Delivery and Impact-Shock Synthesis of Organic Molecules: An Inventory for the Origins of Life," Nature, 355:125, 1992. Also: Henbest, Nigel; "Organic Molecules from Space Rained Down on Early Earth," New Scientist, 2. 27, January 25, ...

... Science Frontiers ONLINE No. 104: Mar-Apr 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ball Lightning Materializes In A Sitting Room July 24, 1994. Oxfordshire, England. It was a hot, humid day that produced strong thunderstorms. Some 14 kilometers west of Oxford, Mr. and Mrs. Langer were in their sitting room when the following sequence ensued: "The storm was almost overhead and I knew the next one would be a cracker, but almost five minutes went by in perfect silence. The window is very big, almost one wall in glass, and was wide open. My husband and I sat in recliner chairs side by side with our backs to the window. Suddenly a shaft of brilliant light came over our heads into the middle of the room and seemed to form itself into a white ball as big as a car tyre. It bounced gently upwards and about five feet from the ground it exploded with a terrible noise. "No rain was falling at the time of observation. The ball was in view for two or three seconds and emitted no noticeable heat or odour. It was opaque in appearance and its colour changed from reddish gold to white before it blew up, at which point it was about one metre away from the room's occupants. No traces were left by the ball other than 'some slight brown marks on the carpet', which were all but removed by cleaning." (James, Adrian; "Ball Lightning in Oxfordshire, July 1994," ...

... 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 The milky sea a.k .a . "white water"June 1854. South of Java. Aboard the American clipper Shooting Star . Captain Kingman reporting: "The whole appearance of the ocean was like a plain covered with snow. There was scarce a cloud in the heavens, yet the sky...appeared as black as if a storm was raging. The scene was one of awful grandeur; the sea having turned to phosphorus, and the heavens being hung in blackness, and the stars going out, seemed to indicate that all nature was preparing for that last grand conflagration which we are taught to believe is to annihilate this material world." We selected this account of the milky sea phenomenon because of its vivid verbiage -- something absent from the modern reports: "August 13, 1986. Northwest Indian Ocean. The entire sea surface took on an intense white glow which was not unlike viewing the negative of a photograph." The milky sea is a rather common phenomenon. In fact, the British Meteorological Office has established a Bioluminescence Database, which presently contains 235 reports of milky seas seen since 1915. P.J . Herring and M. Watson have employed this Database in a review paper on these impressive displays. Geographical plotting of the reports shows a strong concentration in the northwest Indian Ocean (see figure). Seasonally, there is a strong peaking in August and a secondary blip in ...

... 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 Rethinking Aids The columns of SF have frequently publicized the heresy of P. Duesberg, who holds that the so-called AIDS virus, HIV, is not the sole cause of AIDS. Echoing many of Duesberg's assertions is biochemist and immunologist R.S . Root-Bernstein. He points out that: "People all over the world are getting AIDS without being exposed to or infected with HIV." Root-Bernstein continues with: "The implications of this revelation are truly astounding. Essentially there are only three possibilities. The HIV may really be there, but everyone has missed it. This is un-likely, since many of the researchers reporting HIV-negative cases of AIDS are the top HIV experts in the world. Another possibility is that there is a new virus that everyone has missed. This is again unlikely given the huge amount of retroviral research that has been performed in the past decade on AIDS patients. Finally, these may be the cases that demonstrate that AIDS can be produced by the types of synergistic, multifactorial assaults on the immune system that Joseph Sonnabend and I have been proposing for years." Although most AIDS researchers are still wedded to the theory that HIV is the sole and only cause of AIDS, cracks in the stonewalling are beginning to appear. In fact, C.A . Thomas, Jr., formerly a Professor of Biochemistry at Harvard, has organized the Group ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Anomalous Optical Events In The Upper Atmosphere A photodiode was recently lofted to high altitudes (over 400 kilometers) in an experiment to measure the optical power of lightning. During the 10-minute flight, more than 500 lightning-related events were recorded over that part of the globe visible from the rocket's altitude. "Among these is a class of about 23 events all having an anomalous signature, with obvious clustering of optical impulses or continuous emissions, and resulting durations of several hundred milliseconds. Such durations are much longer than typical for lightning-related events recorded at the rocket, which are more frequent overall. Every anomalous optical event (AOE) was accompanied by broadband VLF signals of a distinctive character...In considering possible sources above 30 km we find that the AOEs do not seem to resemble other natural optical phenomena, such as meteors which burn up well above 30 km in the mid-latitude atmosphere." (Li, Ya Qi, et al; "Anomalous Optical Events Detected by Rocket-Borne Sensor in the WIPP Campaign," Journal of Geo physical Research, 96:1315, 1991. Cr. C. Rush.) Comment. Apparently these anomalous "flashes" have not yet been detected from the ground. The implication is that there are many more high-altitude electrical discharges than scientists expect or can account for. From Science Frontiers #80, MAR-APR 1992 . ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Steens Mountain Conundrum The layered lava flows of Steens Mountain, in southeastern Oregon, have preserved video-like records of the earth's magnetic field as it switched from one polarity to another about 15.5 million years ago. The scientific "instruments" here are the cooling lava flows. As they solidify from the outside in, a process taking about 2 weeks for a 2meter-thick flow, the lava is magnetized in the direction of the field prevailing at the moment of solidification. We would thus have a 2-week continuous record of the behavior of the earth's field. Ordinarily, we would not expect to see very much change in 2 weeks; even a reversing field is thought to take thousands of years to complete its flip-flop. However, at Steens Mountain, when the field reversed 15.5 million years ago, the lava flows suggest that the field's axis was rotating 3-8 per day -- incredibly fast according to current thinking, in fact a thousand times faster than expected. The conundrum (one might call it a scientific impasse) arises because the flowing electrically conducting fluids that supposedly constitute the earth's dynamo would have to flow at speeds of several kilometers/hour. No one has ever contemplated molten rock moving at such speeds in the core! (Appenzeller, Tim; "A Conundrum at Steens Mountain," Science, 255:31 ...

... Science Frontiers ONLINE No. 104: Mar-Apr 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A METEORITIC EVENT LAYER IN ANTARCTIC ICE "Where the East Antarctic icesheet meets the Transantarctic Mountains, old, deep glacial ice is tilted upward and exposed. Within this visible cross section of the icesheet, layers of dark volcanic tephra serve as stratigraphic markers and datable age horizons. Systematic sampling of these layers at a well-known meteorite collection site (the Allan Hills Main Icefield) has revealed a band consisting of unusually dark and rounded particles, many of which are spheroidal. This debris layer (BIT-58) extends parallel to the stratigraphy of the ice established from the tephra bands, and thus apparently marks a single depositional event. Several kilograms of ice from two sites along this band were subsequently collected and melted, yielding a few grams of sediment for further study." Microscopic examination and microprobe analysis led to the following conclusions: "Although direct evidence of an extraterrestrial origin for this debris layer (such as the presence of cosmogenic 10 Be and 26Al) has not yet been obtained, the available data strongly suggest that this sediment originated as meteoritic spallation debris. This debris is distinct from other Antarctic 'cosmic dust' collections by virtue of its uniform, recognizable, ordinary chondrite composition and the consistent relation shown between grain size and texture. The BIT-58 layer probably originated from a single transient event, the passage and/or impact of a single large meteorite over the East Antarctic icesheet." (Harvey, ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Archaea: the living ancestors of all life forms Life's place of origin may soon shift from that long-favored "warm little pond" to undersea hydrothermal vents. "Important new discoveries on the properties of the early earth and atmosphere, including the frequency and size of bolide impacts, have strongly implicated submarine hydrothermal vent systems as the likely habitat for the earliest organisms and ecosystems, while stimulating considerable discussion, hypotheses and experiments related to chemical and biochemical evolution. Some of the key questions regarding the origins of life at submarine hydrothermal vent environments are focussed on the effects of temperature on synthesis and stability of organic compounds and the characteristics of the earliest organisms on earth. There is strong molecular and physiological evidence from present-day mircoorganisms that the earliest organisms on earth were capable of growing at high temperatures (about 90 C) and under conditions found in volcanic environments. These 'Archaea', the living ancestors of all life forms, display a variety of strategies for growth and survival at high temperatures, including thermostable enzymes active at temperatures about 140 C. Further molecular and biochemical characterization of the presently cultured thermophiles, as well as future work with the many species, particularly from subsurface crustal environments, not yet isolated in culture, may help resolve some of the important questions regarding the nature of the first organisms that evolved on earth." (Baross, J.A .; "Hyperthermophilic Archaea: Implications for the ...

... Science Frontiers ONLINE No. 104: Mar-Apr 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Magnetic Mountain To find the "magnetic mountain," you must venture out into the Gulf of California about 15 miles east of the Baja Peninsula. Out there, beneath the boat, you can find a basaltic mountain named Espiritu Santo. Next, you don your face mask and descend toward the submerged peak. At about 70 feet, you will likely find yourself surrounded by scores, possibly hundreds, of scalloped hammerheads, some as long as 13 feet. They will ignore you and the teeming fish as they slowly wheel passively around the submerged mountain. Why do these big sharks congregate in this spot? Marine biologists have been asking this for years. (SF#20) A.P . Klimley and his colleagues decided to find the answer. First, by direct observation, they determined that the sharks' main purpose was not pro-creation, although some mating did occur. Mainly, the hammerheads just idled away the daylight hours. At dusk, they disappeared. Klimley et al next implanted some sharks with transmitters and followed them at night. This was their feeding time, they swam 10-15 miles to deep waters where they gorged on squid. At daybreak, they were back drifting around Espiritu Santo. Apparently, the mountain was just a place to rest. But how did the hammerheads find their way back so unerringly? Furthermore, by tracking the tagged fish, the researchers found the sharks often ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Aerial Bioluminescence January 19, 1991. South China Sea. Aboard the m.v . Benavon . The vessel was heading for Singapore on a body of water noted for bioluminescent displays. Flashes of light were seen in the bow wave and the ship's wake, appearing to be both on the surface and slightly below. This type of display is rather common, but another, much rarer phenomenon was also present: In 1880 off the Malabar Coast of India, a vessel was engulfed in great waves of light floating above the sea. "At the same time as the above form of bioluminescence, there seemed to be a second type but it was difficult to pinpoint the source. The effect was that the atmosphere around the ship and extending to the horizon had some form of faint white illumination not provided by the light in the water, which was black apart from the previously described flashes. On the other hand, there was no obvious source in the sky either, which although virtually cloudless was very dark, and certainly darker than the atmosphere at the level of the ship. The only conclusion that the observers could come to was that this was a faint example of (to quote The Marine Observer's Handbook ), 'luminescence in the air a few feet above the sea surface when there is no light in the water'. This form lasted for about 30 minutes, whereas the bright flashes continued for ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects First cold-fusion bomb?Possibly we are overreacting to the following event: "Cold fusion researchers are puzzled and worried by an explosion last week that killed one of their colleagues, a British electrochemist. A cold fusion 'cell' at SRI International in Menlo Park, California, blew up while Andrew Riley was bending over it, killing him instantly." Now small explosions in cold-fusion cells are not unknown. At the tops of some cells palladium-wire electrodes are exposed to oxygen and deuterium (heavy hydrogen) gases. If the palladium wires are not protected by films of water, the palladium can catalyze the explosive combination of the oxygen and hydrogen. This sometimes happens if a dry spot develops on a wire. Such detonations, though, cause little damage. The SRI explosion was much more powerful. The detonating cell (only 2 inches in diameter and 8 inches long), not only killed Riley but peppered three other researchers in the lab with debris. (Charles, Dan; "Fatal Explosion Closes Cold Fusion Laboratory," New Scientist, p. 12, January 11, 1992.) Comment. One cannot refrain from asking if the explosion involved only chemical energy. From Science Frontiers #80, MAR-APR 1992 . 1992-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Cricket Coordination In the August 31, 1991, issue of Science News, there appeared an item on the famous synchronously flashing fireflies of Southeast Asia. W. Clements, writing in response to the firefly story, asserts that Indian crickets chirping in unison are much more impressive. He wrote: "I once rode on the back of a truck at night along mountain roads in India. There the crickets sound out quite loudly. The sound swells and diminishes with a persistent beat. As we drove along mile after mile, there was not the tiniest perceptible change in the rhythm. In other words, the insects we listened to at any point were modulating their sound at exactly the same frequency, if not phase, maintained by their contemporaries many miles back. Considering the vast areas that must be represented wherever it occurs, the phenomenon must involve unimaginable millions of insects all acting in concert. This is vastly more impressive than the spectacle of fireflies performing together in a single tree." Picture, if you will, millions, perhaps billions, of crickets all moving their limbs together in unison over many square miles! (Clements, Warner; "Flashy Displays," Science News, 140:323, 1991.) From Science Frontiers #80, MAR-APR 1992 . 1992-2000 William R. Corliss ...

... 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 Cosmic Snowballs And Magnetic Asteroids The genesis of a cosmic "dust bunny". The nebulous meteor of July 29, 1970, as observed over Dover, England. The great diversity of the debris swirling around the solar system is making life difficult for scientists trying to reconstruct solar-system history. At the high end of the density spectrum, we now have an asteroid that seems to be mostly metal (probably iron). This is the asteroid Gaspra, some 13 kilometers across, that the Galileo spacecraft encountered in August 1992 on its way to Jupiter. Scientists had not expected Galileo's magnetometer to flicker as it passed Gaspra at a distance of 1600 kilometers -- but it did. In fact, considering the inverse square law and Gaspra's small size, it was a magnetic wallop. Thus, Gaspra is the first known magnetic asteroid; and it is probably mostly metal. (Kerr, Richard A.; "Magnetic Ripple Hints Gaspra Is Metallic," Science, 259: 176, 1993.) At the low end of the density spectrum, we now find that Pluto's moon, Charon, and some of Saturn's moons have very low densities (1 .2 -1 .4 ), meaning they are probably mostly water ice. Such density figures come from direct observation of these objects' volumes combined with mass estimates from their orbital dynamics. (Crosswell, Ken; " ...

... 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 Where did agriculture really begin?The archeological party line points to the banks of the Tigris and Euphrates rivers. There, the authorities say that, about 10,000 years ago, humans suddenly learned how to sow and harvest such crops as wheat and barley. There, civilization really began. Or was it there? Wadi Kubbaniya, Egypt. At this site, G. Hillman, of the Institute of Archeology, London, has found grinding stones and tubers. This site is dated at 17,000-18,000 years old. New Guinea highlands. J. Golson, formerly of the Australian National University, has found ditches and crude fields in this area. The implication is that humans were tending plants here between 7,000 and 10,000 years ago. Buka Island, Solomons. While excavating Kilu cave, M. Spriggs and S. Wickler unearthed small flake tools with surfaces displaying starch grains and other plant residues. Evidently, these tools were used for processing taro. Further, the starch grains resembled those of cultivated rather than wild taro. Date: about 28,000 years ago. (Dayton, Leigh; "Pacific Islanders Were World's First Farmers," New Scientist, p. 14, December 12, 1992.) From Science Frontiers #86, MAR-APR 1993 . 1993-2000 William R. Corliss ...

... protective influences of Jupiter and Saturn. These two giant planets can gravitationally deflect potentially devastating asteroids and comets away from the earth. It seems now that we are doubly lucky! Computer runs demonstrate that the presence of our large moon has stabilized the earth's spin axis down the eons. Presently, the earth's spin axis makes an angle of 23.5 with the plane of the earth's orbit (its "obliquity"). The well-known result is our yearly procession of seasons. Without the steadying effect of the moon, however, the earth's obliquity would probably have swung chaotically over much larger values. Such extreme changes would have been inimical to the development of life, particularly advanced life. As a case in point, the polar axis of Mars, with only two tiny moons to dampen its spin excursions, seems to have gone through many wild swings, as indicated in the figure. What deadly climatic changes must have wracked our sister planet! (Touma, Jihad, and Wisdom, Jack; "The Chaotic Obliquity of Mars," Science, 259: 1294, 1993. Also: Laskar, J., and Robutel, P.; "The Chaotic Obliquity of the Planets," Nature, 361:608, 1993.) Comment. The successful evolution of higher life on earth (a presumption!) therefore seems to have depended upon the gravitational shields of Jupiter and Saturn as well as the presence of our unusually large satellite. How likely is this combination of planets and satellites in the rest of the universe ...

... Science Frontiers ONLINE No. 80: Mar-Apr 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Concentric, rotating luminous rings seen in sweden On an evening in late January, 1991, near Borlange, Sweden, four observers watched what seemed to be a system of luminous rings for about 15-20 minutes. The rings were estimated to be 2-5 kilometers away and 10-30 meters in size. E. Witalis has provided a direct translation of their report. "The light phenomenon, which was strongly luminous, consisted of scintillating, rotating rings arranged as a system of plates (small rings in the centre and increasingly large ones towards the edges). The rings seemed to consist of sparks running around in a circular or slightly elliptical path with an impressive speed. Spontaneously I associated them with electrical discharges. The plate shape was felt as being in some way static as to location, and the sparks moved in a pattern without spreading out at the edges. It seemed that strong force was controlling the event. The sparks looked like having a core and a 'tail' behind. They looked like being able to crackle but no sound was heard, perhaps because of the distance. It was interesting to note that the rings were spinning in opposite directions. The effect clearly illuminated the surrounding air space. The whole light phenomenon took place with knifesharp edges in clear weather (temperature between -1 and -3 deg. C." (Witalis. Erik; "An Air Plasma Whirl, Seen in ...

... Science Frontiers ONLINE No. 90: Nov-Dec 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Alien Meteors Meteors or shooting stars are usually considered to be small fragments that have been broken off the asteroids plying orbits between Mars and Jupiter. If this belief is correct, meteors darting into the earth's upper atmosphere would have speeds less than 260,000 kilometers per hour. Any objects with significantly higher velocities must come outside the solar system. It has, therefore, been unsettling to find that quite a few meteors hit our atmosphere at speeds much higher than 260,000 km/hr. Radar measurements of 160,000 meteors by A. Taylor and colleagues, at a New Zealand site, found that about 1% (1500 meteors) struck the atmosphere with velocities greater than 350,000 km/hr. These speedsters must come from beyond the solar system. The question arising is: Whence all this interstellar debris? One hint comes from the fact that the aliens appear to come from the direction in which the sun and its family of planets are traveling through interstellar space. Evidently, this interstellar medium is far from a vacuum; it is strewn with flotsam and jetsam -- but from what smashed planets, moons, and asteroids? (Samson, Alan; "Radar Traps Visitors from Outer Space," Dominion Sun Times (Wellington), April 25, 1993. (Cr. P. Hassall) From Science Frontiers #90, NOV-DEC 1993 . 1993-2000 William R. ...

... where are these bacteria from? How did they succeed in colonizing these habitats?...Are these microorganisms directly descended from bacteria that were trapped during the formation of the oil, or accompanied its migration through tens to hundreds of millions of years? Did they arrive in the oil field later as a consequence of aquifer activity? What is their mode of maintenance and development in their environment?" (Magot, Michel; "Similar Bacteria in Remote Oil Fields," Nature, 379:681, 1996) Comment. Bacteria have also been extracted from mineral-charged fluids circulating in drill holes over 12 kilo meters deep and also in deep aquifers. There must be an unexplored universe of life thriving not only beneath our feet but also - quite possibly - beneath the forbidding surface of Mars. Reference. Examples of life thriving at great depths in the earth may be found in ESB9 in our catalog: Anomalies in Geology. For a description of this book, visit: here . From Science Frontiers #105, MAY-JUN 1996 . 1996-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 90: Nov-Dec 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Lines Of Maser Spots Masers work like lasers, except they radiate microwaves instead of visible light. Natural masers have been found in the atmospheres of both earth and Mars as well as in interstellar space. They form in space when electromagnetic radiation falls upon dense molecular clouds, which then reradiate the energy at frequencies characteristic of the molecules, Armed with radio telescopes, astronomers can "see" masers as bright spots (" maser spots") in the radio sky. R. Norris and J. Whiteoak et al, at the Australia Telescope National Facility, while surveying just 16 regions of the Milky Way between 5,000 and 30,000 light years, detected a dozen intense methanol masers (6 .7 -12.2 gigahertz) arranged in lines. Early thinking is that these maser spots decorate the discs of gas clouds surrounding nascent stars. In other words, maser spots could be protoplanets. Given the small area of the sky sampled by Norris and Whiteoak, maser spots may be very common. (Dayton, Leigh; "Microwaves May Mark Position of Protoplanets," New Scientist, p. 16, July 10, 1993.) Questions. Whence all this interstellar methanol? And where does it all go when the protoplanets coalesce into planets? Could these molecular clouds also contain those other organic compounds necessary for the creation and development of life? If so, we can speculate that life may originate often and ...