71 results found.
... 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-shaped mounds with vertical slits in them large enough to conceal a human. From these blinds, the king and princes would swing nets on the ends of 12-foot poles to catch pigeons. Of course, no self-respecting wild pigeon would ever fly over such a suspicious hill without some enticements. So, captive pigeons caged on the mound were set to cooing and other pigeons tethered by long strings were launched. Sure enough, wild pigeons were lured close ...
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... Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Life Forms In Meteorites?Few could have escaped the recent gushy press coverage of NASA's announcement that an Antarctic meteorite, possibly of Martian origin, seems to have carried vestiges of life forms from that planet to ours. No need to recapitulate all that hype. What we do add is the observation that this same sort of excitement has swept through the scientific community at least twice before. Back in 1961, B. Nagy et al discovered tiny particles resembling fossil algae in carbonaceous chondrites. They called these particles "organized elements." Ultimately, these curious particles were explained as natural crystals and terrestrial contaminants. (Ref 1.) Much earlier, in 1881, Hahn, an eminent German geologist, asserted that he had examined thin sections cut from chondrites and found fossils of sponges, corals, and crinoids. In fact, the extraterrestrial coral that Hahn found even received the scientific name Hahnia meteoritica ! In the end, though, Hahn's meteoric life forms met the same fate as the "organized elements" of Nagy et al. (Ref. 2) Ref. 1. Urey, Harold C.; "Biological Materials in Meteorites: A Review," Science, 151:157, 1966. Ref. 2. Bingham, Francis; "The Discovery of Organic Remains in Meteoritic Stones," Popular Science Monthly , 20:83, 1881. Both references can be found in our Handbook Mysterious Universe. For information on this book, visit here . Some of the "Organized elements" found ...
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... The stones that make up the wall are 4-ton blocks of ignimbrite, a soft volcanic rock that could have been easily dressed with stone tools. The wall is topped by a red beech tree 2.9 meters in circumference and over a meter of accumulated humus. According to Brailsford, who was interviewed by the Listener : "There was no doubt that the stones had been cut. The four visible stones in the front wall were a uniform 1.6 metres tall, and 1 metre wide. In one place he could insert his arm into a root-ridden cavity and feel the back face -- and the front face of the next tier. The faces were uncannily smooth, with no saw or adze marks. The interstices where the blocks join were knife-blade thin. "Further up the hill, the tops of other stones protruded, suggesting a more extensive structure was buried in the hill." Supporting the contention that a pre-Maori people lived in New Zealand are the bones of the kiore, a type of rat alien to New Zealand, which was likely introduced by the first settlers. Some kiore bones have been dated as 2,000 years old -- centuries before the first Maoris arrived. Needless to say, New Zealand archeologists and anthropologists are not anxious to drastically revise their fundamental paradigm assigning the discovery and colonization of New Zealand to the Maoris. But Brailsford and Childress are even more iconoclastic: They suggest links to a pre-Polynesian culture; a culture that left similar megalithic structures elsewhere in the Pacific and along the west ...
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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 Computer Con-Fusion Not content with joking about "nominative determinism" (SF#108), the "Feedback" page of New Scientist has been having fun with "rogue hyphens." These errant hyphens occasionally appear in the very best of our newspapers and magazines. Word processors insert them in the wrong places when trying to justify lines of text. Some are hilarious, as are these gleaned from Canadian newspapers by B. Taylor: mans-laughter deter-gents calfs-kin thin-king cart-ridges end-anger tramp-led casual-ties prick-led (Anonymous; "Feedback," New Scientist, p. 80, February 18, 1997.) Comment. Certainly there can be nothing anomalous about rogue hyphens. Wrong! After G. Kasparov was defeated recently by IBM's Big Blue computer, all the commentators told us not to worry about being replaced because computers were just machines. For example, they had no sense of humor. From the cleverly inserted hyphens above, we now know this is not true! From Science Frontiers #112, JUL-AUG 1997 . 1997-2000 William R. Corliss ...
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... saw the layer of tiny brass spheres heap up into hexagonal honeycombs, circular piles, and even stranger shapes. (Umbanhower, Paul B., et al; "Localized Excitations in a Vertically Vibrated Granular Layer," Nature, 382: 793, 1996) Comment. Nothing anomalous here, you say? Quite right, but perhaps there is in this experiment an explanation of a long-recognized geological anomaly: The origin of the famed Mima Mounds found scattered by the thousands in various regions of the planet, such as Mima Prairie near Puget Sound, in Washington State. Actually, the demonstration of Umbanhower et al was preceded by a similar experiment back in 1990. In that year, A.W . Berg reported in Geology how he had covered a piece of plywood with a thin layer of fine sand (loess) and subjected the plywood sheet to impacts simulating earthquakes. Lo and behold, the sand rose up in an array of Mima Mound-like heaps. (See: SF#69 and p. 201 in the book Science Frontiers. This book is described here . Umbanhower, a physicist, probably doesn't read Geology , but the results of his team's experiments certainly confirm Berg's simpler experiments and support the idea that quakes molded the Mima Mounds. Patterns of tiny brass spheres created by different forcing frequencies. Were Mima Mounds piled up by quakes. From Science Frontiers #108, NOV-DEC 1996 . 1996-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 118: Jul-Aug 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Mysterious Terras Pretas Most of the lush jungles of tropical South America grow on a very thin layer of soil that is continuously regenerated by decaying vegetation. Deforest the jungle and the agricultural potential is about that of a your nearest Interstate highway. But the so-called "terras pretas" are curious exceptions. Spotted along Brazil's Aripuana River are small areas of deep, black earth that are from 7 to 17 feet deep. These are the "terras pretas" or "black earths." Scientists believe that these fabulously productive "islands" in the sea of otherwise poor soil were developed by native peoples about 10,000 years ago. No one knows how these ancient farmers made the terras pretas. The slash-and-burn farming of the present inhabitants is primitive in comparison. (Anonymous; "Fertile Soil of Ancient Tribes Poses Puzzle," Columbus Dispatch , January 11, 1998. (Cr. J. Fry via COUD-I ) From Science Frontiers #118, JUL-AUG 1998 . 1998-2000 William R. Corliss ...
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... Science Frontiers ONLINE No. 95: Sep-Oct 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects "AN UNPRECEDENTED AND BIZARRE OBJECT"So said C. Burrows, codiscoverer of this new cosmic conundrum. The instigator of all the astronomical head scratching is our old friend Supernova 1987A, the subject of several past SF items. This time, the anomalies are associated with three bright rings now gracing 1987A's environs. The thin, dense, elliptical inner ring, the first to be noted, has always been a puzzle. Its diameter suggests that it was probably created about 30,000 years before 1987A blew up. But what is it? Its existence is hard to explain, as N. Panagia has confirmed: "The presence of a dense, thin, ring surrounding a massive star at the end of its evolution is not easy to account for." In other words, this ring is foreign to mainstream astronomical theory. Now, with the help of the Hubble Space Telescope, two additional faint rings near 1987A have been detected. One seems to be the mirror image of the other. The bizarre part is that they are not centered on 1987A at all, like the ring mentioned above. One of the new rings seems to be in front of 1987A, the other in back -- but this is a subjective call. Speculation is rampant, and all three rings are enigmatic. Is 1987A blowing out rings of matter front and back? (Panagia, Nino; "Origins Revealed in Demise, ...
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... Science Frontiers ONLINE No. 93: May-Jun 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Just Plane Weird T. Surendonk has written to New Scientist how he and a friend would stop on Sepulveda Boulevard, at the edge of the Los Angeles airport, to watch the big jets come in directly overhead for a landing. "While the huge planes were impressive enough, our attention was captured by an event that sometimes occurred between twenty and thirty seconds after a plane had flown over: a thin tube of misty air would zap past us at apparently high speed accompanied by a rather loud flapping sound. "Sometimes the "mist" would follow a straight path, but often it would follow a really contorted path that made the "mist" look like a snake engaged in a rather violent path -- rather captivating to watch. "We suspected that the effect was some sort of remnant of the vapour trails that sometimes came off the tips of the wings and tried to confirm this by direct observation, but we could never keep track of such a trail for more than 5 seconds. Also, we were never totally convinced that the two effects were correlated. Anyway, wouldn't such a trail dissipate within a few seconds?" (Surendonk, Timothy; "Just Plane Weird," New Scientist, p. 58, March 5, 1994.) Comment. If these "mists" are merely trailing vortices, the long time delay between passage of the plane and the tube of mist is puzzling ...
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... Scientific Exploration. We now quote from that part of the abstract dealing with field experiments in several countries. "This report presents new insights into an unconventional option of locating water reserves which relies on water dowsing. The effectiveness of the method is still highly disputed. Now, however, extensive field studies -- in line with provable and reliable historic account -- have shown that a few carefully selected dowsers are certainly able to detect faults, fissures and fractures with relative alacrity and surprising accuracy in areas with, say, crystalline or limestone bedrock. A series of Deutsche Gesellschaft fur Technische Zusam menarbeit (GTZ) projects involving this technique were carried out in dry zones with unexpectedly high rates of success. In particular, it was possible to locate a large number of relatively small underground aquifers in thinly populated areas and to drill wells at the sites where water is needed; the yields were low but sufficient for hand-pump operation throughout the year. Finding or locating a sufficient number of relatively small fracture zones using conventional techniques would have required a far greater work input." A second part of the study involved controlled experiments in which dowsers tried to detect concealed targets such as pipes. (Betz, HansDieter; "Unconventional Water Detection: Field Test of the Dowsing Technique in Dry Zones," Journal of Scientific Exploration, 9:1 and 9;159, 1995. Journal address: ERL 306, Stanford University, Stanford, CA 94305) As one might expect (and should want), dowsing skeptics reacted swiftly to the German work. As for the field studies mentioned ...
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... Science Frontiers ONLINE No. 91: Jan-Feb 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The earth's biosphere, 'tis no thin veneer A recurring theme in SF is the three-dimensionality of terrestrial life. Customarily, life is considered confined to a thin spherical shell of air, water, and earth. But the bits of drillers have demonstrated that life prevails as far down as we can pierce the planet's integument. Now, K.G . Stetter et al: ". .. report the discovery of high concentrations of hyperthermophiles [viz., bacteria] in the production fluids from four oil reservoirs about 3,000 metres below the bed of the North Sea and below the permafrost surface of the North Slope of Alaska. Enrichment cultures of sulphidogens grew at 85 C and 102 C, which are similar to in reservoir temperatures." Stetter et al favor the theory that these hyperthermophiles were injected into the reservoirs through: (1 ) drilling and secondary-recovery operations; and/ or (2 ) natural penetration via faults and seeps. They pointedly distance themselves from the idea, championed by T. Gold, that subterranean bacteria are actually permanent ancient residents of a deep subterranean biosphere. (Stetter, K.O ., et al; "Hyperthermophilic Archaea Are Thriving in Deep North Sea and Alaskan Oil Reservoirs," Nature, 365:743, 1993.) On the other hand, in their comments on the above paper, J. Parkes and J. Maxwell do ...
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... Science Frontiers ONLINE No. 91: Jan-Feb 1994 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Dna undermines key paradigms Did captive christians and moslems build this mayan pyramid? A LARGE CELTIC PYRAMID IN GERMANY? Astronomy Two-faced planets and moons Pairs of ghostly spots sweep across jupiter Biology Some people are brighter than others Crayfish communication Pizzaspermia! The earth's biosphere, 'tis no thin veneer Geology Do earthquakes raise mima mounds? Geophysics Remarkable hailstones Lightning stalled aircraft Post-lightning glows Fiber fall ...
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... Science Frontiers ONLINE No. 72: Nov-Dec 1990 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology The clovis police Birds of burden Astronomy Nature, hypothesis, and the big bang At last, a theory of everything! Biology 1989 SIGHTINGS OF OGOPOGO Hypermutation rather than Geology Baikal's deep secrets Is the arctic ice cover thinning? Impact crater beneath lake huron Wagnerian sands of the desert Geophysics Icy minicomets not so dead! CROP CIRCLE UPDATE: WHAT ARE "THEY" TRYING TO TELL US? UPWARDLY DIRECTED LIGHTNING FROM CLOUD TOPS Psychology HYPNOTIC SUGGESTION SUPERIOR TO SALICYLIC ACID General The belgian flying triangle updated ...
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... Science Frontiers ONLINE No. 31: Jan-Feb 1984 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Phoenix vs. The Hohokam Astronomy Mercury's Orbit Explained Without Relativity The Sun As A Scientific Instrument What Causes the Sunspot Cycle? There Are Cold Anomalies "out There" An Orphan Superluminal Glob? Biology Cancer Even More Insidious Hearing Via Acoustic Holograms Ri Seen The Hypothesis of Formative Causation Lives! Geology The Rise of Astronomical Catastrophism Wanted: Disasters with A 26-million-year Period Thin-skinned Tectonics Early Life and Magnetism Geophysics The Min Min Light Are Nocturnal Lights Earthquake Lights? Three Anomalies in One Storm Mystery Spirals in Cereal Fields Unidentified Phenomena Psychology The Kaleidoscopic Brain At Last: Someone Who Can Predict the Future! Unclassified Reciprocal System Avoids Taint of Reductionism ...
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... Science Frontiers ONLINE No. 139: Jan-Feb 2002 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects White Mars?Earth is called the "blue planet" by virtue of its thin veneer of blue ocean water. Mars is now red because of its endless vistas of reddish soil and rocks, But most planetary scientists now insist that Mars was once blue, too. It was drained by gushing rivers and supported a vast ocean. The planet's many channels and layered deposits seem to prove Mars was, like Earth, once a water-rich planet. We like to think this way because we so much want to find life on our sister planet, and to us water is life! Not so fast! says N. Hoffman from La Trobe University in Victoria, Australia. According to his hypothesis, water has had little or no importance in shaping the Martian landscape. Instead, his 'White Mars' model contends that the gurgling, frothing and sometimes explosive venting of carbon dioxide gas from beneath the surface created the features. Outrageous as Hoffman's hypothesis is, it is supported by several significant observations that seem to deny a watery Mars. The Mars Global Surveyor has not detected any carbonate minerals that should have been created when water interacted chemically with the planet's CO2 atmosphere. Surface photos fail to show the fine networks of tributaries that should have fed the larger drainage features if water were the agent of erosion. There is no evidence of large lakes or reservoirs at the heads of the so- ...
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... Science Frontiers ONLINE No. 127: Jan-Feb 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Shadow Dance Of The Gnats An curious phenomenon was reported recently to the New Scientist. "I travelled to Hungary to observe the recent total solar eclipse. About five minutes before totality, my wife and I noticed many curved shadows about 3 centimetres long dancing on a white paper lying on the ground, formed by a swarm of gnats. The shadows were exactly the same shape as the remaining bright portion of the Sun, by then only a thin arc of light. Why?" This phenomenon is not anomalous but it is entertaining. It is the reverse of the pin-hole-camera effect often seen during total eclipses. People standing in the shadow of a tree will see many bright arcs on the ground -- images of the sun being eclipsed. The interstices between the tree's leaves act as pinholes. The phenomenon happens in reverse when pin-holes are replaced by "pins"; that is, small opaque obstructions, such as gnats. (Scott, Andrew, and Diebold, Mike; "Shadow Dance," New Scientist, p. 93, October 30, 1999.) From Science Frontiers #127, JAN-FEB 2000 . 1997 William R. Corliss ...
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... will create remarkable displays using the same ice crystals. The first of the two examples below is notable for its extreme height; the second provides the accepted explanation. August 24, 1998. South China Sea. Aboard the m.v . Oriental Bay , Hong Kong to Singapore. "Four shafts of narrow vertical light were observed reflected in the sky. Upon consulting the chart it was revealed that they were 'reflections' of the four flares of the Kakap Natuna oil terminal, which at this point was 75 n mile away. "As indicated in the sketch, the shafts of light were visible above a lower layer of stratocumulus cloud, and, when measured by sextant, their upper tips were calculated to be nearly 13 km high. The shafts appeared to be reflected in a thin layer of cirrostratus and, as the vessel approached to 60 n mile from the terminal, the glow from the flares was also visible on the horizon." (Peterson, J.L .; "Optical Phenomenon," Marine Observer, 69:110, 1999.) Tall light pillars rise over the South China Sea February 4, 1999. Toyama Bay, Japan. The caption quoted below is located beneath an impressive color photograph of five tall pillars of light reaching up into the night sky. "Rare beams of light rise to the upper atmosphere over Toyama Bay on Thursday. The lights appeared about 2,000 meters above fishing boats with fires aboard to attract squid, for about 20 minutes from 8 p.m . The night illuminations are a rare natural phenomenon in ...
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... ALL THE MOTION OF LUNAR SATELLITES ALL1 Perturbation of Artificial Lunar Satellites ALO ANOMALOUS TELESCOPIC AND VISUAL OBSERVATIONS ALO1 Doubling of Lunar Detail ALO2 Variable Spots, Streaks, and Other (Apparently) Optical Phenomena ALO3 Banded Craters ALO4 Lunar "Canals" and Lineaments ALO5 The Lunar Zodiacal Light ALO6 Distortions of the Lunar Disk ALO7 Bright Diverging Ray above the Moon ALO8 Dark Triangular Patches under the Moon ALO9 Ring of Light around the New Moon ALO10 Shortened Lunar Crescents ALO11 The Lunar Post-Sunset Horizon Glow ALW LUNAR "WEATHER" ALW1 Clouds, Mists, and Obscurations ALW2 Anomalous Ion Clouds Detected on the Lunar Surface ALX LUNAR ECLIPSE AND OCCULTATION PHENOMENA ALX1 Very Dark Lunar Eclipses ALX2 Distortions of the Earth's Shadow ALX3 Eclipse Fingers of Light ALX4 Bands and Patches on the Eclipsed Moon ALX5 Very Bright Lunar Eclipses ALX6 Thin Arcs of Light on Rim of Eclipsed Moon ALX7 Dusky Bands across Planets at Contact Phase of Occultation ALX8 The Hanging or Projection of Stars and Planets on the Moon's Limb ALX9 Post-Eclipse Changes of Surface Features ALX10 Reception of Radio Signals from Occulted Spacecraft ALX11 Bright Ring around Moon during Partial Solar Eclipse ALX12 Extended Glows of Occulted Planets ALZ THE ENIGMA OF LUNAR MAGNETISM ALZ1 Anomalous Features of Lunar Magnetism ALZ2 Anomalous Demagnetization Behavior of Lunar Samples ALZ3 Correlations of Magnetic Anomalies with Surface Features ALZ4 Correlated Directions of Magnetization of Lunar Magnetic Anomalies AM MARS AME MARTIAN GEOLOGICAL ANOMALIES AME1 The Martian Channels AME2 Systems of Lineaments on Mars AME3 Pyramidal Structures AME4 Ice Layering in the North Polar Regions AME5 The "Searchlight" Areas AME6 Evidence for Surface and Subsurface Ice AME7 Anomalous Hillocks and Ridges AME8 Martian Surface Asymmetry ...
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... GWS WEATHER AND ASTRONOMY GWS1 Correlation of Lunar Phase and Terrestrial Weather GWS2 Correlation of Lunar Phase and Thunderstorms GWS3 Thunderstorms Correlated with Solar Activity GWS4 Effects of Meteors on Weather GWS5 Correlations between Solar Activity and Weather GWS6 Influence of Lunar Phase on Atmospheric Ozone GWS7 The Lunar Temperature Effect GWS8 Purported Effect of the Planets on the Weather GWS9 Comets and the Weather Eclipse Wind Stratospheric Winds Correlated with Solar Activity Weather Correlated with the 18.6 -Year Cycle GWT THE IDIOSYNCRACIES OF TORNADOS AND WATERSPOUTS GWT1 The Tornado as an Electrical Machine GWT2 Burning and Hydration during Tornados GWT3 Tornados and Waterspouts with Horizontal Funnels GWT4 Multiwalled Waterspouts GWT5 Anomalous Historical Incidence of Tornados GWT6 Reversal of Rotation in Waterspouts GWT7 Pranks of the Tornado GWT8 Tornado Incidence Correlated with Magnetic Variation GWT9 Landspouts or Dustspouts GWT10 Waterspouts between Clouds GWT11 Forked Waterspouts GWT12 Abnormally Thin Waterspouts GWT13 Waterspout Funnel-Knots GWT14 Bull's -Eye Squalls Destructive Downbursts (Microbursts) Tornados Correlated with Automobile Traffic GWW WHIRLWINDS AND DUST DEVILS GWW1 Explosive Onset of Whirlwinds GWW2 Pranks of Whirlwinds and Dust Devils GWW3 Steam Devils GWW4 Electrical Properties of Whirl winds and Dust Devils GWW5 Energetic Miniature Vortices Aircraft Trailing Vortices Whirlwind Families 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. ...
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... Science Frontiers ONLINE No. 127: Jan-Feb 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Our Filtered Brains Beneath the thin bone of your cranium lies an organic information processor of prodigious speed and capacity. We see brief glimpses of its real power in the mental performances of those autistic savants who can tell us instantly the day of the week for January 1, 2022, [Saturday] or draw fantastically detailed and accurate sketches of scenes after just a brief glance. You may scoff, but you could do the same if your consciousness didn't suppress your innate mental talents. There is growing suspicion that our brains process and store just about everything our senses convey to them. Our brain is also a number-cruncher of great power that can "see" calendar pages stretching millennia into the future and far back into prehistory. The most formidible arithmetic problems are child's play to it. Some researchers maintain that it is our consciousness that prevents us from realizing the full potential of this spongy sack of neurons. Consciousness, you see, is a necessary filter that permits only useful, practical information to flash before us as we attempt to deal with the real world. Of what survival value is calendar-calculating in today's world when we have our PCs? Or even yesterday's threat-filled world? (Future worlds? Who knows?) The consciousness filter is only partially effective in autistic savants. It is a bit porous in normal childhood, when streaks of genius sometimes seep through ...
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... the world where large masses of native (almost pure) copper are common: the Lake Superior region, particularly Isle Royale, and Corocoro, Bolivia. The largest "nugget" of nearly pure copper comes from Lake Superior and weighs almost 46 tons! But the Corocoro mines are rich in another way; copper "pseudomorphs." In copper pseudomorphs, copper ions insidiously invade crystals of other minerals and assume their shapes. Copper pseudomorphs of aragonite, a form of CaCO3 , are common. Aragonite sometimes occurs as short, tabular, hexagonal prisms, as shown in the sketch. Under the water table, in a copper-rich area, copper ions in solution "attack" aragonite crystals. First, they oust and replace the outer layers of CaCO3 , gilding the aragonite crystal with a thin layer of pure copper. Then, they work inwardly and eventually usurp the whole crystal and take on its shape. Even stranger are those hexagonal crystals that are pure aragonite in the top half and pure copper in the bottom half. Mineralogists speculate that these formed along the edge of the water table. (Hyrsl, Jaroslav, and Petrov, Alfred; "Pseudomorphs from Bolivia," Rocks and Minerals , 73:110, November/December 1998.) From Science Frontiers #123, MAY-JUN 1999 . 1999-2000 William R. Corliss ...
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... Van Flandern, Tom; "' Lake' on Mars?" Meta Research Bulletin, 8:30, 1999. For details, go to: http://www.cbjd.net/orbit/mars/steadlake.html) Comments. The reference did not specify the Martian hemisphere, but it was probably the northern, where there are extensive lowlands. In fact, if water once did flow on Mars, 75% of it would have drained into these lowlands. (Anonymous; "Mars in 3-D ," Science News, 156:11, 1999.) Back in 1976, the Viking Orbiter sent back pictures of so-called "searchlight areas" in the northern hemisphere. The speculation then was that these glassy, seemingly transparent features might be thin layers of ice. (AME5 in The Moon and the Planets) Possible ice-covered lake on Mars (Reproduction of a negative). From Science Frontiers #125, SEP-OCT 1999 . 1999-2000 William R. Corliss ...
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