... Science Frontiers ONLINE No. 129, May-Jun 2000 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Leif was Late The Hidden "Gardens" Astronomy TLPs: One Fades, Others Flash The Extremophilic Terraforming of Mars Interplanetary Doldrum s Biology Why we "Roll in the Aisles" If Fingerprints Don't Lie, Neither to Toe Prints A Third Way? Geology Leaky Seas From Nature's Atelier The Anomalous Antiquity of Some Landforms Geophysics Crop Circles Can be Natural Contagious St. Elmo's Fire Uplifting may be Hazardous Psychology The Sound of Shapes Miscellaneous An Astronomer's UFO nnnbbbbbvccccccxzzzzzcvbn,;/////ppooo ...

... Science Frontiers ONLINE No. 157: Jan - Feb 2005 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Discovery of a hidden chamber in the Great Pyramid? Who are what was writing over a million years ago? Astronomy The cosmos is 'unspeakably bizarre' -- if you accept two premises No canals but glassy tubes instead Biology Snowflakes of the sea Ground-squirrel infrared countermeasures The shapes that determine time and memory Geology Geyser-type action of the Oklo natural nuclear reactors Geophysics Rogue waves Pwdre Ser falls again Psychology The profundity of sleep Physics Something's the matter with matter Who digs the Higgs? ...

... Science Frontiers ONLINE No. 149: Sep-Oct 2003 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Stringware Old Viking Bones Lied Astronomy A Bridge too Faint The Dark Side of Cosmology Biology The Sweet Sex The Seventh-Story Paradox Great Walls make Divergent Neighbors Liver Delivery Life's Lethal Quality Control? Life's Biochemical Enforcers Geology Natural Ground Patterns on Two Planets What Caused a Global Planation Event? Geophysics Strange Object Observered during Thunderstorm Giant Electrical Jets Flash up into Ionosphere Horizon-to-Horizon Bioluminescent Bands Psychology When Coming Events cast Psychic Shadows before them Sleight of Hand Physics More Light at the end of the Tunnel ...

... Science Frontiers ONLINE No. 121: Jan-Feb 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Oklo: An Unappreciated Cosmic Phenomenon In 1972, French scientists discovered that several natural concentrations of uranium ore had become critical and flared up some 2 billion years ago at Oklo, Gabon. The concentration and configuration of the natural uranium and surrounding materials at that time had been just right to sustain fission. In fact, the analysis of the nuclear waste in the burned rocks demonstrated that plutonium had also been created. This implies that natural breeder reactors are also possible, raising the possibility of hitherto unappreciated, long-lived heat sources deep in the earth, in the other planets, and inside some of the stars. Don't worry that the Oklo phenomenon might occur today on the earth's surface. The concentration of fissionable U-235 has fallen considerably in the last 2 billion years due to its radioactive decay. But, deep inside the earth and other astronomical bodies, nuclear criticality might still be possible due to different pressures, densities, etc. In a stimulating and generally overlooked paper in Eos, J.M . Herndon proffers four important natural phenomena that may involve natural fission reactors. Geomagnetic reversals . In the deep earth, where pressures and densities are high, natural nuclear reactors may generate intermittent bursts of heat -- just as they did at Oklo -- and thereby cause the earth's dynamo to falter and reverse. Planetary heating . Jupiter, Saturn, and Neptune emit much more energy than ...

... Science Frontiers ONLINE No. 114: Nov-Dec 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Complexity And Mount Improbable In principle, the combination of random mutation and natural selection can account for any level of biological complexity you wish to have explained. R. Dawkins' Mount Improbable is never too high to scale with this Darwinistic mechanism -- if given enough time, of course. At times though, we have to wonder if there is not a cog railway or something similar to aid organisms as they ascend this Mount. Such thoughts arose when reading C. Koch's Nature article on neurons and their networks. Neurons are cells with three principal components: the cell body, the axons, and the dendrites. These cells and the networks underlie all of our perceptions, actions, and memories. The ways in which they store and process information has turned out to be much more complex and dynamic than previously supposed. Neural networks are so intricate that Koch was impelled to conclude his review of current research with this paragraph: "As always, we are left with a feeling of awe for the amazing complexity found in nature. Loops within loops across many temporal and spatial scales. And one has the distinct feeling that we have not yet revealed every layer of the onion. Computation can also be implemented biochemically -- raising the fascinating possibility that the elaborate regulatory network of proteins, second messengers and other signalling molecules in the neuron carry out specific computations not only at the cellular but also at the molecular level. ...

... Science Frontiers ONLINE No. 111: May-Jun 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Is perfect pitch favored by natural selection?People with perfect pitch can identify, play, and/or sing a particular musical note without first hearing a reference note. (SF#99 and SF#102) Even if a string of notes is played randomly, they can instantaneously name them. Although musical training while young fosters perfect pitch, the talent also runs in families. A study of 500 musicians, with and without perfect pitch, by N. Freimer at the University of California, revealed that half of those claiming perfect pitch knew family members of like talent. Only 5% of those without perfect pitch made this claim. (Ref. 1) At the North Shore University Hospital, Manhasset, NY, P.K . Gregersen and M. de Andrade were able to locate 126 perfect-pitchers. In this select group, 5.5 % had parents with perfect pitch, and 26% had siblings thus gifted. Among musicians lacking perfect pitch, the figures were 1.1 % and 1.3 %, respectively. (Ref. 2) An unexpected (to us, anyway) correlation of perfect pitch and synethesia (SF#68) was made by Freimer's group. Some perfect-pitchers swear they can "see" musical notes, and even "smell" and "taste" them! (Ref. 1) References Ref. 1. Day, Michael; ...

... , stands an enigmatic array of stone blocks. It "looks" like a wall; a human-built wall. It also "looks" old; perhaps 2,000 years old according to some. Who built it? Passions are running high in New Zealand, where three hypotheses are being advanced: The wall was built some 2,000 years ago by the first settlers of New Zealand, the Waitahas, who were subsequently nearly exterminated by the Maoris, who arrived only 800 years ago. There are political problems with this theory, for the Maoris insist they are the original New Zealanders and therefore are due compensation for lands expropriated by later Europeans. The wall is merely what's left of a sawmill built only 50 or so years ago. The wall is simply a natural rock formation that has happened to split neatly into rectangular blocks -- like those slabs of beach rock that comprise the controversial Bimini "road" in the Bahamas. Future study of the "wall" will doubtless narrow the list to one. Meanwhile, let's take a look at the wall itself. B. Brailsford, of Christchurch, has been the chief investigator of the Kaimanawa wall, aided by American D.H . Childress, and others. 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 ...

... 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 When Like Charges Attract The above title implies that a basic law of physics has been overturned. Indeed, a commentary in Nature by C.A . Murray begins as follows: "Larsen and Grier, on page 230 of this issue [Ref. 2], show that two similarly charged polymer spheres suspended in water can attract each other when they are several diameters apart. This surprising result casts some light on a tricky theoretical many-body problem that has been swept under the rug for a century, and it has implications for colloids in nature and in industrial processes." (Ref. 1) Exactly what happens is not yet clear. This counter-intuitive phenomenon occurs in a many-body situation, where screening charges are established between the like-charged spheres. Although Coulomb's Law states that like charges repel one another, the presence of screening particles complicates the picture, as do the van der Waals dipole interactions. The microscopic situation may be murky, but there is no doubt on the macroscopic level that unexpected attractive forces are operating. For example, when sub-microscopic, electrically charged latex spheres are suspended in water, one would expect a homogeneous colloidal soup. Instead, the tiny, charged spheres pull themselves together in patchy, but ordered arrays. These metastable groupings of spheres are called "crystallites." Theorists are not certain what is going on. References Ref. 1. Murray ...

... have long been portrayed as insensitive and brutish. But when the remains of flowers were found at Shanidar, a Neanderthal grave site in Iraq, archeologists mellowed a bit in their assessments. Now, there is evidence that those supposed lowbrows were also musicians. In 1996, in a Slovenian cave, researchers discovered a flute crafted from the thigh bone of a cave bear. Stone tools of Neanderthal manufacture were found nearby. The flute is dated between 43,000 and 82,000 years old and is the oldest-known, deliberately manufactured musical instrument ever found. (Folger, Tim, and Menon, Shanti; "Strong Bones, and Thus Dim-Witted? Or Much Like Us?" Discover, 18:32, January 1997.) Really stale chewing gum! The journal Nature recently printed the photograph of a tooth-marked wad of chewing gum said to be 6,500 years old. This particular wad came from a Swedish bog, but similar wads have been found all over Northern Europe. Not having access to South American chicle, ancient confectioners made the gum from birch bark. Birch bark was also the source of the tar primitive humans used for gluing and waterproofing. E. Aveling, University of Bradford, has concocted a fresh batch of birchbark gum for a taste test. (No one volunteered to try the "old" stuff!) She reported that it is neither pleasant nor unpleasant, but neither are modern-day Moxie and Vegamite. The tooth impressions on the ancient gum wads prove that they were chewed mainly by children and teenagers - ...

... can account for (among other things): The fact that all helium comes from oil and gas wells The fact that the composition of petroleum is not what one would expect from the decomposition of plants and animals. It is really a mixture of primordial hydrocarbons with some added biochemical by-products; that is, products of that "deep" biosphere. Since carbonaceous material is now known to be common in the solar system (comets, carbonaceous chondrites, etc.), it is likely that many other planets also possess deep stores of hydrocarbons. In these deep, warm, protected, energyrich "wombs," complex biospheres might readily evolve. In Gold's view, deep biospheres may be the rule and surface life the exception! Finally, Gold sees life as merely a natural process with no more meaning and purpose than accelerating the breaking of chemical bonds and thereby increasing entropy! "It has been said that nature abhors a vacuum, but nature doesn't care much for free energy either. All of biology is just a device for degrading energy from chemical sources, and on the surface from the great temperature differential between the hot sun and the cold of space. Perhaps biology is just a branch of thermodynamics, and there is no sudden beginning of life, but a gradual systematic development toward more efficient ways of degrading energy. .. .The chemical energy available inside a planetary body is then more likely to have been the first energy source and surface creatures -- like elephants and tigers and people -- which feed indirectly upon solar energy are just ...

... , at Laurentian University, Canada, have reported some advances in our understanding of this classical anomaly. The group discovered that they could make ordinary sand musical by repeated grinding, polishing, and removal of fines. Given sufficient processing, ordinary sand that is merely "noisy" when shaken can be made to "sing." Singing sand has a unique infrared signature: a broad band stretching from 3,700 to 2,800 cm-1 . This is probably due to clusters of water molecules in an amorphous silica layer on the surfaces of the sand grains. Taking a clue from the infrared spectrum, Goldsack et al shook commercially available silica gel in a bottle and heard the familiar tones of singing sand! Their conclusion is that for sand to sing the particles must be coated with naturally (or artificially) created silica gel. (Goldsack, Douglas E., et al; "Natural and Artificial 'Singing' Sands," Nature, 386:29, 1997. Also: Cohen, Philip; "Desert Dunes Sing Silica's Song," New Scientist, p. 17, March 8, 1997.) Comment. The fundamental mystery survives. Goldsack admits no insights as to exactly how muscial sands find their "voices." The subject of musical sand is explored in considerable depth at ESP14 in Anomalies in Geology. Ordering information here . Locations of the more prominent musical sands and booming dunes. (Adapted from: Geological Society of America, Bulletin, 87:483, 1976). From Science Frontiers #111, MAY-JUN 1997 . ...

... Science Frontiers ONLINE No. 119: Sep-Oct 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The End Of The Old-Model Universe That cosmology is in flux is apparent in the following sentence found in Nature: " The standard ideas of the 1980s about the shape and history of the Universe have now been abandoned -- and cosmologists are now taking seriously the possibility that the Universe is pervaded by some sort of vacuum energy, whose origin is not at all understood." Does this mean that the Big Bang, the mainstay of the astronomy we were taught in school, is now being cast aside? After all, the Big Bang does model fairly well three important observations: The apparent expansion of the universe; The 3 K microwave background; and The abundances of the light nuclei. But try as they may, cosmologists have not been able to coax the Big Bang model to explain the large-scale lumpiness and structure of the galaxies and galaxy clusters. One problem with the Big Bang is that it has too many free parameters -- too much theoretical slack. Many cosmologists are now looking for a better model. This better model, to use the words of P. Coles, should be more "exciting" and "stranger," something "perhaps not even based on General Relativity." (Coles, Peter; "The End of the Old Model Universe," Nature, 393:741, 1998.) Questions. Isn't cosmology already already "strange" enough? Since when ...

... Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Did Mozart Use The Golden Section?Does the brilliance of Mozart's compositions derive entirely from his musical genius, or did he rely in part upon a mathematical construct: the famous Golden Section or Golden Ratio? The Golden Section is a mathematical formula for dividing into two parts: a geometrical line, a musical composition, or anything else possessing the property of length. The ratio of the two divided parts is the Golden Section, which equals 0.618.* For some artists, musicians, architects, the Golden Section is the most esthetic way of dividing the length of anything. For humans, the history of the Golden Section goes back at least as far as Euclid in 300 BC. For nature, it began eons ago: The shapes of pine cones, starfish geometry, and other dimensions of living things incorporate the Golden Section. The questions we address here are: (1 ) Did Mozart consciously make use of this ratio, 0.618, in his music? (2 ) Why is the Golden Section esthetically pleasing? It is not well known that Mozart was fascinated by mathematics as well as music. He even jotted down equations in the margins of some of his compositions. Chances are excellent that he knew of the Golden Section and its reputation for conferring elegance on structures -- even musical compositions. J.F . Putz, a mathematician, has measured some of Mozart's works. Mozart's piano sonatas were convenient targets, because in Mozart' ...

... Science Frontiers ONLINE No. 108: Nov-Dec 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earthquakes And Mima Mounds In a recent paper in Nature, P.B . Umbanhower et al described how they created regular geometric patterns in a layer of fine particles (only 0.15 mm in diameter) spread on a vibrating surface. At various forcing frequencies, they 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 ...

... for a Contents page, which is in English, the rest of the book is in Japanese. We'll have to settle for the Contents page, which is rather revealing. Human Beings under the Sea The Submarine Ruins Discovered Were the Ryukyu Islands a Continent? Discovery of a Civilization Lost in the Sea An Ancient Civilization in Southernmost Japan A Continent Lost in the Pacific Ocean Submersion of the Land and Tectonics of the Earth Hypotheses for the Land Lost in the Pacific Ocean A Utopia Sunk in the Pacific Ocean Pretty inflammatory stuff, so much so that we must be wary indeed! One of the drawings in our photocopy is good enough to reproduce here. The immediate impression, as with many of the underwater photographs, is that surely this structure is artificial. But we must remember that Nature has her playful moods and has deposited simulacra everywhere, perhaps even on Mars, certainly with the Grand Tetons! (Kimura, Masaaki; A Continent Lost in the Pacific , all other bibliographical data in Japanese. Cr. R. Molnar) This secion of Kimura's "lost continent" is only about 180 meters long. Artificial structure or natural geological formation? From Science Frontiers #121, JAN-FEB 1999 . 1999-2000 William R. Corliss ...

... ponderous induction motor. Expanding upon this vision of the earth as a colossal electrical machine, E. Stokstad writes: "Electric currents of about a billion amps flow across the boundary between the solid inner core and the fluid outer core that lies around it. In the presence of the Earth's magnetic field, these currents generate massive forces that tug on the inner core. And because the outer core has a relatively low viscosity, the inner core can spin freely." (Stokstad, Erik; "Earth's Heart Is in a Spin," New Scientist, p. 18, July 20, 1996. The basic paper is: Song, Xiadong, and Richards, Paul G.; "Seismological Evidence for Differential Rotation of the Earth"s Inner Core," Nature, 382:221, 1996) Comments. Awesome as this gigantic natural electric motor may be, it doesn't challenge any paradigms; in fact, it reinforces current notions concerning the origin of the geomagnetic field. The anomalist, however, inevitably asks questions and makes iconoclastic connections. Why couldn't this planet-size piece of rotating machinery actually be a generator rather than a motor? The kinetic energy of the faster-spinning inner core might actually create the geomagnetic field. What happens when the geomagnetic field reverses, as it has often done according to the magnetostratigraphic record? Does the earth's motor go into reverse? If the inner core can slip relative to the crust and mantle, why cannot the crust-plus-mantle slip, too -- perhaps ...

... are too weird and amusing to ignore. Love's arrow. Or, rather, love's giant hypodermic needle. Cupid's arrows are rather benign compared with those of some squid. Some small squid will use their sharp beaks or tentacle hooks to rip open the skin of females. They then insert spermatophores with their penises. In the giant squid, however, the male's penis is formidable, muscular, and almost a meter long. It is powerful enough to insert spermatophores directly under the skin of the females. The males are not always accurate, for males themselves are sometimes impregnated in this manner during the squids' deep-sea orgies. (Norman, Mark D., and Lu, C.C .; "Sex in Giant Squid," Nature, 389:683, 1997.) The free-style penis. In the octopus and many cephalopods, the males have a special tentacle with which they insert their spermatophores under the mantle of the female. The tentacle is then retracted for future use. The male paper nautilus is more profligate with its tentacles. The paper nautilus is cephalopod which, like its cousin, the chambered nautilus, "sails the unshadowed main."* When the male detects a receptive female, he avoids intimacy. It's sex at a distance. His spermatophore-bearing tentacle detaches itself from the body and swims -- under its own power -- to the female, being in effect a swimming penis. Just how this peculiar arrangement evolved is anyone's guess. Perhaps it has ...

... Science Frontiers ONLINE No. 115: Jan-Feb 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Evolvable Hardware First, you must envision a computer chip as an evolvable entity -- an array of logic gates that can be connected in an almost infinite number of ways. A soft-ware instruction becomes the equivalent of a biological gene. Software instructions can be changed to achieve certain hardware goals just as genes can be rearranged to modify an organism. Furthermore, human operators can specify a hardware goal to the chip and let it evolve on its own, something it can do in microseconds rather than millions of years. This is not a frivilous subject. D. Fogel, chief scientist at Natural Selection, Inc., in La Jolla, California, asserts: "Eventually, we will need to know how to design hardware when we have no idea how to do it." A few demonstration devices have already been built, and in them we see something worthy of note for Science Frontiers. One such device, built by A. Thompson, University of Sussex, was tasked to identify specific audio notes by certain voltage signals. Given 100 logic gates, the device needed only 32 to achieve the result. The surprise was that some of these working gates were not even connected to others by normal wiring. Thompson admitted that he had no idea how the device worked. Something completely unexpected had evolved. Perhaps, thought Thompson, some of the circuits are coupled electromagnetically rather than by wires. Human engineers would never ...

... in SF#114) is the assumption that our destiny is controlled by "selfish genes" (or "selfish DNA"). The idea that evolution works only at the gene level has been championed by R. Dawkins, and today it dominates much evolution philosophy. However, this "genetic imperialism" is now being challenged by some scientists who insist that culture also affects an organism's evolution, be it a human or an insect. In fact, it was Dawkins himself who first proposed the term "meme" for the cultural counterpart of the gene. A meme, in other words, is an "element" of culture that can be passed along to progeny by imitation and/or cultural pressures. In reductionist thinking, environmental challenges are met by gene mutations plus natural selection. In meme theory, the same challenges are confronted by cultural changes (meme "mutation") plus natural selection. The meme approach is holistic rather than reductionist and is appealing because it allows us some control over our destiny. There are several phenomena in which some scientists profess to see memes overpowering the genes: Generations of female infanticide have led to more male births than female births. In dairy-farming societies, 90% of the population has the enzyme lactase that allows individuals to digest cows' milk. In other societies, 80% become ill when drinking cows' milk. A variety of cultural pressures have raised the percentage of lefthanders in North America to 12% compared with just 2% a century ago. In Taiwan, where cultural pressures are quite different, ...

... Science Frontiers ONLINE No. 113: Sep-Oct 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The View From Within A hypnotized individual can sometimes be coaxed to hallucinate his or her body image as seen by the unconscious mind. The hallucinated body image may be radically different from that conceived by the conscious mind. In cases of mental illness, the hallucinated unconscious body image may not even be a human figure but rather a bird, a fish, or an inanimate object or geometric figure. The nature of the unconscious body image seems to depend upon the nature of the emotional pathology and may even be useful in diagnosis and treatment. (Freytag, Fredericka; "The Hallucinated Unconscious Body Image," American Journal of Clinical Hypnosis, 7:209, 1965.) From Science Frontiers #113, SEP-OCT 1997 . 1997-2000 William R. Corliss ...

... great depths. Below about 70 meters, the water pressure collapses their lungs so that they sink like rocks! Of course, returning to the surface does require some exertion. (Zimmer, Carl; "The Dolphin Strategy," Discover, 18:72, March 1997.) Comments. One automatically supposes that the dolphin dorsal fin is needed for stabilization when swimming -- like an airplane's rudder. But several cetacea do quite well without dorsal fins; viz., the finless dolphin found in IndoPacific waters. Could dorsal fins actually have evolved for thermal control rather than stabilization? And how do dolphin's breathe if their lungs have collapsed? Their blood and muscles act as oxygen reservoirs -- still another evolutionary adaptation. Speaking of evolution, as one must when discussing Nature's neat methods of solving bioengineering problems, how did random mutation and natural selection hit upon the heat-exchanger and oxygen-reservoir ideas? We know! These were more millimeter-by-millimeter climbs up Mount Improbable. Reference. The finless dolphin and the general question of dorsal-fin evolution is the subject of Section BMA46 in our Catalog Mammals I . Details may be found at here . From Science Frontiers #112, JUL-AUG 1997 . 1997-2000 William R. Corliss ...

... , climatologists have questioned the sizes of gas-hydrate deposits, but cores extracted from the Blake Ridge off the Carolina coast confirm the immense amounts of gases precariously locked up in sea-floor sediments. The stratum of gas hydrates in the Blake Ridge alone covers 26,000 square kilometers -- enough gas is there to supply the U.S . for 107 years. In biological terms the Blake Ridge's carbon is equal to 7% of the carbon locked up in all terrestrial biota -- animals, trees, grasses, etc. And the Blake Ridge gas hydrates represent a miniscule fraction of the planet's frozen gas hydrates. (Dickens, Gerald R., et al; "Direct Measurement of In Situ Methane Quantities in a Large Gas-Hydrate Reservoir," Nature, 385:426, 1997. Also: MacDonald, Ian R.; "Bottom Line for Hydrocarbons," Nature, 385:389, 1997.) Comment. Methane is well-known as a "greenhouse gas." If really large "burps" were released, climatic changes would probably ensue. Unfortunately, gashydrates are rather unstable. What would happen if a large asteroid slammed into the Blake Ridge? Huge quantities of methane would disgorge into the earth's atmosphere. The climate changes might be disastrous for fauna (like the dinosaurs!) and flora. The heavily shaded area of the Blake Ridge (area = 26,000 km2) contains gas-hydrates and free gas. Drill sites 995 and 997 are also indicated. From Science Frontiers #111, ...

... Science Frontiers ONLINE No. 110: Mar-Apr 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Did a methane burp down twa800?The potential for methane eruptions from offshore sediments to sink ships and down aircraft was proposed by W.D . McIver way back in 1982, in the Bulletin of the American Association of Petroleum Geologists. (SF#25/208) The source of methane-gas releases (" burps") is the rapid decomposition of methane hydrate, which exists in prodigious quantities in offshore sediments. Some geologists have estimated that there is twice as much methane in methane-hydrate deposits as in all terrestrial natural-gas fields. What makes methane hydrate potentially lethal is its instability. Landslides and small quakes can release huge plumes of methane bubbles into the ocean and thence into the atmosphere. Ships might founder in the lowdensity froth of bubbles, and aircraft might be adversely affected, too. This is where TWA800 comes in. R. Spalding, a scientist at Sandia National Laboratories has been monitoring mysterious atmospheric explosions and believes that some of these detonations are consistent with the atmospheric ignition of huge methane plumes. (Other detonations are due to meteors.) Spalding proposes the following scenario: The ocean floor releases a massive methane gas plume, which rapidly rises to the surface and ascends into the atmosphere. The lighter-than-air methane cloud gains altitude, mixing with oxygen and thereby gaining explosive poten tial. An electrical disturbance -- possibly caused by the rising cloud itself or a lightning strike - ...

... Science Frontiers ONLINE No. 120: Nov-Dec 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Spod Logs The Black Hills of the Dakotas are composed of Precambrian shists that have been intruded by granite. The Harley Park granite is well known to us all because it has been carved into the monumental visages of four presidents at Mount Rushmore. Nature, too, has expressed herself on a giant scale nearby. "Around the granite, the shists are host to numerous spectacular pegmatites. These were mined and quarried in the early years of this century for both the large sheets of mica and also the spoduomene, which was a valuable source of lithium. The largest crystals were of the spoduomene, which were found up to 20 m [63 feet] long. Looking like great white tree trunks with two cleavages along their length, they were affectionately known as spod logs." (Waltham, Tony; "Spod Logs," Geology Today , 13:207, 1997.) Comment. Any crystal 63 feet long is worthy of mention in this newsletter! From Science Frontiers #120, NOV-DEC 1998 . 1998-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 116: Mar-Apr 1998 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Mystery of the stoned pharaoh Those ancient greek pramids An anasazi reservoir Astronomy Microscopic life on mars? Plant life on mars? "A FANTASTIC RESULT!" Ten strikes against the big bang Biology Eyeless vision The ultimate in unisex Eco-darwinism: diffuse individuals Monarch compasses Geology Miles of mush Global cooling has begun! Geophysics Target: greenland Ball lightning collides with car Earthquake weather High-fling catfish More on the mekong mystery Dr fogs and bright nights Physics G: THE EMBARRASSING CONSTANT OF NATURE Unclassified Evolution of cyberlife ...