... Sourcebook Subjects The Stealth Catastrophe Recently, as geologists reckon time -- only 800,000 years ago -- Australia, Southeast Asia, and the eastern Indian Ocean were bombarded by untold numbers of small, oddly shaped stones called "tektites." New finds of tektites have expanded the strewn field of these Australasian tektites to include part of China. It now appears that about 30% of the earth's area was subjected to this stony bombardment. It is inescapable that the Australasian-tektite fall was a major event in the earth's history. But where are other signs of this great catastrophe? The present consensus holds that the Australasian tektites originated when a large celestial body slammed into our planet somewhere in Southeast Asia. The energy of the impact splashed droplets of molten rock into ... atmosphere, where they were shaped aerodynamically and then fell as tektites. The extent of the immense Australasian-tektite strewn field implies a hard-to-miss crater about 100 kilometers in diameter. Yet, despite the geological recency of the event and despite much geological surveying, no convincing crater has been discovered. (SF#115) So, we have abundant evidence of a terrestrial event encompassing much of the planet but no "smoking crater"! The mystery deepens when one realizes that whatever cataclysm sent the Australian tektites aloft may have been comparable in magnitude to the impact that extinguished the dinosaurs (and other fauna) some 65 million years ago. This much older event has its craterburied below the Yucatan and is further marked by widespread biological extinctions. In contrast, the Australasian-tektite ...

... : MAY-JUN 2001 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects 0.999999999999999999999999c Well, that's how many 9s are used in the article before us. That's how close to the speed of light (" c ") that the so-called "high-energy cosmic rays" are travelling when they smash into the earth's upper atmosphere. More impressive is the fact that these speedy microscopic subatomic particles pack a macroscopic wallop. Would you believe a proton with the energy of a 120-mileper-hour fast ball? These super cosmic rays are so energetic that our galaxy's magnetic field hardly influences their trajectories at all. Astronomers really cannot tell where they come from. Even more disconcerting, the ... Science Frontiers ONLINE No. 135: MAY-JUN 2001 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects 0.999999999999999999999999c Well, that's how many 9s are used in the article before us. That's how close to the speed of light (" c ") that the so-called "high-energy cosmic rays" are travelling when they smash into the earth's upper atmosphere. More impressive is the fact that these speedy microscopic subatomic particles pack a macroscopic wallop. Would you believe a proton with the energy of a 120-mileper-hour fast ball? These super cosmic rays are so energetic that our galaxy's magnetic field hardly influences their trajectories at all. Astronomers really cannot tell where they come ...

... .) Comments. Science-fiction writers have not neglected the "drifters" as potential sources of intelligent life. F. Hoyle's The Black Cloud is a good example of the genre. Who can say what "plasma entities" might have emerged over the eons on these multitudinous drifters? To illustrate, if you were given only the known properties of the chemical elements and a primitive earth, would you predict that matter would spontaneously mold itself into human beings? Even on earth, on very small scales, we see "plasma entities" like ball lightning and "spooklights" behaving mighty strangely! Who knows what is transpiring on the drifters. From Science Frontiers #130, JUL-AUG 2000 . 2000 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy ... under gravity's urging. If such collapsing clouds were less than 80 times Jupiter's mass, they would not be able to sustain nuclear reactions and become long-lived stars. Many would be-come "brown dwarfs." Still smaller aggregations -- less than 14 Jupiters -- would never shine at all. These would remain warm for a while as they dissipated the gravitational energy that created them. Such small objects would be temporarily detectable by infrared telescopes. Hundreds of such infrared "point sources" turn up in sky surveys. These are the only "drifters" we can detect. "Drifters" that have already cooled off are certainly out there by the hundreds of millions. (Muir, Hazel; "The Drifters," New Scientist, p. 14 ...

... 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 ... 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 ...

... the Universe." Gamma-ray bursts remain one of the outstanding mysteries of astronomy. The depth of the mystery is underscored by the belief that the gamma rays must be confined to a narrow beam by their sources, rather than being emitted in all directions. No one knows how this focussing might be accomplished. Also, since we detect only those bursts that happen to be aimed at the earth (at a rate of about one per day), there should be a colossal number of bursts that we are unaware of. Yet, we cannot divine what these common, immensely powerful energy sources are. (Kiernan, Vincent; "Blasted by a Beam Weapon on the Edge of Space," New Scientist, p. 13, May 8, 1993.) From Science Frontiers ... Science Frontiers ONLINE No. 88: Jul-Aug 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Blasted By A Beam Weapon On The Edge Of Space January 31, 1993. Aboard NASA's Compton Gamma Ray Observatory. This satellite detected a gammaray burst containing ten times more energy than any other burst ever observed. It was one hundred times stronger than any known constant source of gamma rays. Even so, careful searches with ground-based telescopes found nothing visible in the direction of the burst. Scientist B. Dingus remarked: "It's clear that it is unique event that liberates more energy in a few seconds than any other process in the Universe." Gamma-ray bursts remain one of the outstanding mysteries of ...

... Science Frontiers ONLINE No. 85: Jan-Feb 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Biogeology It is accepted that every cubic centimeter of the topsoil beneath our feet seethes with thousands of microorganisms. It is less well known that life's domain extends down much further. The hard rocks and strata of earth's crust -- seemingly sterile and inert -- are continuously being transformed by bacteria and other life forms. In fact, it was easy to find three examples of such processes from the literature collected from the past two months. Although the discoveries reported below may seem dull to anomalists ued to more exciting fare, it may well be that life from "inner space" has been and will be more important ... Duhig, Nathan C., et al; "Microbial Involvement in the Formation of Cambrian Sea-Floor Silica-Iron Oxide Deposits," Geology , 20:511, 1992.) Deeper implications. The formation of placer gold and ironstone are only part of the repertoire of deep-living microorganisms. A five-year survey of microbial life conducted by the U.S . Department of Energy (DOE) found that bacteria were everywhere -- even 3 kilo meters deep in a Virginia borehole. F. Wobber, the DOE manager of the project underscored the mystery and probable importance of "biogeology": "Besides asking how subsurface bacteria affect geology, he wonders how geologic processes could have carried living things so deep into the planet. 'When you find these organisms at great ...

... The same report mentions extensive underground rivers, but it has taken over 2300 years and the development of statistical methods to suggest a connection among fluid pressure, earthquakes, and geophysical luminosities. Many of the sightings are treated as mystical experiences, depending on local cultural values. In Denver and Rangely, Colorado, and Attica, New York, these sightings correlate with earthquakes and injection of fluid into the earth for waste disposal or secondary oil recovery. In the New Madrid, Missouri, area, luminosities are highly correlated with flooding on the Mississippi River and tend to occur 9 months after high water. Enough luminosities, and radio emissions in the ULF band, are observed weeks to months before earthquakes to suggest that they be tested as a possible forecasting tool for the select places where they occur. ... pattern of occurrence may delineate the progress of tectonic strain and so indicate the direction or even location of a future epicenter. Fluid moving through developing cracks may be the source of electrical energy which powers the EQL. A number of potential mechanisms should be considered, involving tectonic strain, exoelectron emission, streaming potential, EM excitation of water droplets, and the fault zone as an EM waveguide." (Derr, John S., and Persinger, Michael A.; "Fluid Injection Causes Luminous Phenomena," paper presented at the 11th Annual Meeting, Society for Scientific Exploration, Princeton, NJ, June 11, 1992.) From Science Frontiers #82, JUL-AUG 1992 . 1992-2000 William R. Corliss ...

... Monastersky, R.; "Buried Rock, Bacteria Yield Deep-Sea Feast," Science News, 140:103, 1991.) Comment. (1 ) Looking far back in time, the sun was, of course, the energy source, because it helped create the buried organic matter. (2 ) However, there is always the possibility that the methane seeping out of the earth is abiogenic. See BLACK GOLD -- AGAIN under Geology . (3 ) How deeply into the crust has life penetrated? The Soviets reported bacteria at 12 kilometers in their drill hole on the Kola Peninsula. From Science Frontiers #79, JAN-FEB 1992 . 1992-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 52: Jul-Aug 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Small Icy Comets And Cosmic Gaia L.A . Frank and his associates at the University of Iowa have speculated that the earth is continuously and copiously bombarded by small, icy comets. Not just a few now and then, but a steady rain so intense that over geological time some major geological consequences must ensue. (See SF#44.) Some observers commented that surely these scientists have thrown away their careers by suggesting something so ridiculous. But the data are there -- in the form of dark spots on satellite images of the earth's dayglow -- and late results continue to support this far-out interpretation, ... time, then the water influx is sufficient to fill the Earth's oceans. The fluxes of these objects are also large for all the planets outside the orbit of Earth. Considerations of thermal stability imply that the fluxes of comets that impact Venus are considerably less. The outer giant planets may be significantly heated relative to solar insolation by the small-comet impacts. For example, the total energy input due both to solar insolation and comet impacts may be similar for Uranus and Neptune. Thus it is possible that the temperatures of these two planets are similar, even though Neptune is farther from the Sun." (Frank, L.A ., et al; "On the Presence of Small Comets in the Solar System," Eos, 68:343, 1987.) ...

... convinced, explain the 'miracle' of life satisfactorily." (Davies, Paul; "The Creative Cosmos," New Scientist, p. 41, December 17, 1987.) The superorganism. One week later, O. Sattaur expanded on the Gaia concept. He quotes J. Lovelock's definition: ". .. the physical and chemical condition of the surface of the Earth, of the atmosphere and of the oceans has been, and is, actively made fit and comfortable by the presence of life itself...in contrast to the conventional wisdom which held that life adapted to planetary conditions as it, and they, evolved their separate ways." Mainstream science has shown scant love for the Gaia concept, probably because of its holistic nature. The idea ... of this creative power?" In groping for an answer, he presents first a common example of "blind" organization: the hexagonal convection cells in a pan of heated water. Using for a stepping stone the cooperative action of atoms in a laser, he leaps to the development of an embryo from a single strand of DNA! All such systems are "open"; that is, energy can flow in and out. They are also nonlinear, which means that chaotic, unpredictable action may occur. Davies implies that such action can be "creative," almost as if they possessed free will! His final example is that of the network with large numbers of interacting sites or nodes. With random inputs, large networks do exhibit self-organization. Network theory is now very ...

... caught with blinders on! Beyond these amusements, the practical import for energy production is enormous, and who know what else will eventuate? But what about science itself? First, cold fusion will doubtless generate a brand new crop of anomalies which we are only able to guess at now. Pertinent to our effort to catalog anomalies, it is possible that cold fusion may be occurring deep in the earth giving rise not only to heat but the upwelling flux of helium-3 , now called "primordial" perhaps in error. The icy planets Jupiter and Saturn generate heat, too, and may also be cold fusion reactors! Even the sun, which is undeniably hot (at least on the surface!), may be fusing light elements in ways we have yet to grasp in our ... underscored. Be that as it may, a genie has been uncorked. Both cold fusion and the re-cent excitement over high-temperature superconductivity demonstrate that a largely unexplored universe exists in the electrochemistry of the solid state. Favorite theories lie in shambles; faces are very red; the most elite of our scientific institutions were caught with blinders on! Beyond these amusements, the practical import for energy production is enormous, and who know what else will eventuate? But what about science itself? First, cold fusion will doubtless generate a brand new crop of anomalies which we are only able to guess at now. Pertinent to our effort to catalog anomalies, it is possible that cold fusion may be occurring deep in the earth giving rise not only to heat but the upwelling flux of helium ...

... All Issues This Issue Sourcebook Project Sourcebook Subjects "COMPACT STRUCTURES": WHAT NEXT?We know that immense molecular clouds drift through interstellar space, but a new denizen has now made itself known through its ability to diffract quasar radio signals. Although constituted only of ionized gases, these new objects are called "compact structures." "' Compact means that these objects are about as big as the earth's orbit around the sun, and therefore larger than all but the biggest stars. They are, however, much smaller than the clouds that previous observations have detected in interstellar space. They reveal their presence by diffracting the radio waves coming from distant quasars. .. .. . "The objects move too fast to be near the quasar -- to be that far away, ... 't see them, [R .L .] Fiedler says, because they didn't observe the same quasar at close enough intervals." If these ionized clouds are spherical. they have masses comparable to the asteroids; but, if they are elongated, their mass is anyone's guess. No one knows how they are formed, how long they last, or where the energy comes from to maintain them in an ionized state. Extrapolating from the five instances recorded so far, the observers speculate that these compact structures may be 500-1000 times more numerous than stars! (Thomsen, D.E .; "Oodles of 'Noodles' Found in Galaxy," Science News, 131: 247, 1987.) From Science Frontiers #52, JUL- ...

... - the primary energy source being hydrogen sulfide in the vented water. (Paull, C.K ., et al; "Stable Isotope Evidence for Chemosynthesis in an Abyssal Seep Community," Nature, 317:709, 1985; Also: Weisburd, S.; "Clams and Worms Fueled by Gas?" Science News, 128:231, 1985.) Comment. Since the earth's crust seems honeycombed with fissures and rivers of life-sustaining fluids, subterranean life may be as common as the abyssal chemosynthetic life at the vents and seeps. This versatility of life signals us that we should look for life wherever there is energy of any kind. From Science Frontiers #43, JAN-FEB 1986 . 1986-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 40: Jul-Aug 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Planets as sun-triggered lasers Apparently both the earth and Jupiter emit radio energy when triggered by bursts of radio waves arriving from the sun. The outer atmospheres of these planets act like radio lasers, which store radio energy and then release it suddenly when stimulated by weaker solar signals. The earth's laser operates between frequencies of 50 and 600 kilohertz. Its emissions are known as the "auroral kilometric radiation" or AKR. While some of these terrestrial emissions are spontaneous, others are stimulated by Type-III solar radio bursts. The newly discovered Jovian laser operates at hectometric wavelengths and is also triggered by the solar radio bursts. ... Calvert, W.; "Triggered Jovian Radio Emissions," Geophysical Research Letters, 12:179, 1985.) Comment. Earth and Jupiter thus act like radio transponders, releasing large bursts in response to small solar stimuli. The role of electricity in the history of the solar system is only beginning to be appreciated. Of course, the radio lasers mentioned above are not very powerful, but what might have occurred during the formative stages of the solar system? Could electromagnetic forces have been more important then than they are now? In this regard, note that electrical forces seem to be strongly involved in the dynamics of Saturn's rings. And Saturn's rings themselves may resemble a miniature solar system in the accretion phase. From Science Frontiers #40, JUL-AUG ...

... Feb 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Biological Diversity Crisis If life fills all available energy niches, life must be capable of transforming itself (or of being transformed) into a multitude of different energy transducers or energy utilizers. E.O . Wilson has outlined the diversity of terrestrial life in a recent issue of BioScience. The earth, it appears, is a veritable Gene sis Machine; and it is only one planet among a possible infinitude. So many terrestrial species have already been described that one could easily believe that biological collectors roaming the planet's wild places have just about completed their task. Some recent totals: 47,000 species of vertebrates, 440,000 plants, and 751,000 insects. ... Science Frontiers ONLINE No. 43: Jan-Feb 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Biological Diversity Crisis If life fills all available energy niches, life must be capable of transforming itself (or of being transformed) into a multitude of different energy transducers or energy utilizers. E.O . Wilson has outlined the diversity of terrestrial life in a recent issue of BioScience. The earth, it appears, is a veritable Gene sis Machine; and it is only one planet among a possible infinitude. So many terrestrial species have already been described that one could easily believe that biological collectors roaming the planet's wild places have just about completed their task. Some recent totals: 47,000 species of vertebrates, 440 ...

... Science Frontiers ONLINE No. 42: Nov-Dec 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Remarkable Distribution Of Hydrothermal Vent Animals Hydrothermal vents support a bizarre array of large clams, mussels, worms and other curious species. These biological communities are unique in that they are supported not by solar energy but rather the earth's thermal energy. What verges on the anomalous is the appearance in both Atlantic and Pacific Oceans of very similar vent communities, with similar or identical species. How did these continent-separated communities originate ? In the words of the author of the present article, "The cooccurrence of a clam, a mussel, and a vestimentiferan worm at widely separated sites in the Pacific and Atlantic represents either an unusual distribution ... Science Frontiers ONLINE No. 42: Nov-Dec 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Remarkable Distribution Of Hydrothermal Vent Animals Hydrothermal vents support a bizarre array of large clams, mussels, worms and other curious species. These biological communities are unique in that they are supported not by solar energy but rather the earth's thermal energy. What verges on the anomalous is the appearance in both Atlantic and Pacific Oceans of very similar vent communities, with similar or identical species. How did these continent-separated communities originate ? In the words of the author of the present article, "The cooccurrence of a clam, a mussel, and a vestimentiferan worm at widely separated sites in the Pacific and Atlantic represents either an unusual distribution ...

... Issues This Issue Sourcebook Project Sourcebook Subjects 1986: "TIRED LIGHT" REVIVED AGAIN Back in 1929, F. Zwicky proposed that the redshifts astronomers observed in the spectra of celestial objects might not be due to universal expansion but rather to "tired light." In other words, the wavelengths of the photons entering our telescopes are redshifted because they have lost energy through interactions with matter en route to earth. The "tired light" theory was eclipsed by the esthetically appealing concepts of the Big Bang and Expanding Universe. But not everyone has forgotten Zwicky's tired light. P. LaViolette has: ". .. compared the tired light cosmology to the standard model of an expanding universe on four different observational tests and has found that on each one the tired-light hypothesis was superior ... Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects 1986: "TIRED LIGHT" REVIVED AGAIN Back in 1929, F. Zwicky proposed that the redshifts astronomers observed in the spectra of celestial objects might not be due to universal expansion but rather to "tired light." In other words, the wavelengths of the photons entering our telescopes are redshifted because they have lost energy through interactions with matter en route to earth. The "tired light" theory was eclipsed by the esthetically appealing concepts of the Big Bang and Expanding Universe. But not everyone has forgotten Zwicky's tired light. P. LaViolette has: ". .. compared the tired light cosmology to the standard model of an expanding universe on four different observational tests and has found that on each ...

... Science Frontiers ONLINE No. 25: Jan-Feb 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Manifestations of earth energy at megalithic sites?Stories have long circulated that strange phenomena cluster about megalithic sites, such as Stonehenge. Those who claim psychic powers state that earth energies (whatever they are) seem to focus at these ancient constructions. The story goes that the builders of the stone circles could also detect these natural forces and intentionally chose these spots where the energies were most powerful. "Proper" siting and orientation were doubtless important to the builders of the megalithic structures, but can modern, no-nonsense science even begin to explore these mystical, psychic claims? Given today's scientific impatience with all psychic subjects, one ... not expect a scientific journal, even a popular one, to touch the subject of "earth energies." Yet, here is an article describing the use of ultrasound detectors and Geiger counters in surveying megalithic monuments for foci of earth energies. Sure enough, curious enhancements of ultrasound intensity were discovered at the Rollright Stones. At another site, the natural radiation background level was anomalously depressed. It is all very mystifying. (Robins, Don; "The Dragon Project and the Talking Stones," New Scientist, 96: 166, 1982.) Comment. This appearance of this article would be comprehensible if it were in the April 1 issue of New Scientist, but it wasn't . In truth, of course, there could be something in the "earth energy" concept ...

... Science Frontiers ONLINE No. 35: Sep-Oct 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Galactic radiation belt?Both Jupiter and the earth boast radiation belts consisting of electrically charged particles tethered by the planet's magnetic fields. Recent radio astronomical studies of the Milky Way reveal long filaments of ionized gas about 150 light years long curving up out of the galactic disk, at a point about 30,000 light years from earth. These filaments emit radio energy just like the planetary radiation belts and are presumably held in the grip of a galactic magnetic field. There have been previ-ous hints of a weak and disorganized galactic magnetic field, but this is the first evidence for a strong polar field in our own Milky Way ... any other galaxy. The unexpected filaments were discovered by in a study of star formation in the core of the Milky Way. The radio energy emitted by the belts was originally thought to come from the galactic machinery that makes new stars; but now it looks like that machinery is not grinding out nearly as many new stars as once thought. (Thompsen, D.E .; "Galactic Dynamoism: A Radiation Belt?" Science News, 126:20, 1984.) From Science Frontiers #35, SEP-OCT 1984 . 1984-2000 William R. Corliss ...

... from Pioneer Venus Orbiter show that the planet radiates 15% more energy than it receives from the sun. In other words, Venus's surface is hotter then it would be if only the greenhouse effect were operating. Where could this extra energy come from? If it arises from the decay of naturally occurring radioactivity, Venus would have to have 10,000 times as much radioactivity as the earth. If this is the case, Venus must have had an origin radically different from the earth's . (Anonymous; "The Mystery of Venus's Internal Heat," New Scientist, 88:437, 1980.) Comment. Another possibility is that Venus is still cooling down and is much younger than the earth! From Science Frontiers #14, Winter 1981 . 1981 ... . 14: Winter 1981 Supplement Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Venus: highly radioactive or just cooling down?The surface temperature of Venus is about 480 C, higher than any other solar system planet. While Venus does trap solar radiation in its atmosphere greenhouse fashion, data from Pioneer Venus Orbiter show that the planet radiates 15% more energy than it receives from the sun. In other words, Venus's surface is hotter then it would be if only the greenhouse effect were operating. Where could this extra energy come from? If it arises from the decay of naturally occurring radioactivity, Venus would have to have 10,000 times as much radioactivity as the earth. If this is the case, Venus must have had ...

... some of which were published in the March 1982 issue of Physics Today along with a closely related article by Ornstein. Ornstein tackled the problem of estimating the probability that intelligent life would evolve on other planets from a biologist's perspective. Whereas some physical scientists have set this probability at about 1.0 , Ornstein inclines toward 10-9 , believing that intelligent life is probably unique to the earth. But concludes Ornstein, the 15 separate developments of eyes among disparate terrestrial organisms may infer some unrecognized directing factor in evolution that would force him to revise his estimate upwards drastically. On the other hand, those 15 eyes might indicate a common, but still undiscovered, eye-possessing ancestor far back along evolution's track. The fossil record might be mute on this matter because eyes ... 't need them, as cave dwellers are wont to do with surprising rapidity. Some of the letters responding to Tipler questioned whether an intelligent civilization would be stupid enough to build self-reproducing von Neumann machines for galactic exploration. Wouldn't it be far more fun to go in person rather than by proxy? And, some pointed out, von Neumann machines would be ravenous consumers of energy and materials and might turn on man as an unnecessary competitor. Machines are not immutable. Space radiation and other environmental factors might alter computer programs and memories to drastically affect the behavior and objectives of such machines. Actually, as one letter writer observed, the earth has already been invaded by a self-reproducing, energy-hungry machine with exploratory tendencies -- man! (Anonymous; ...

... the Kolar Gold Fields in India, they hoped to measure particles created by highly penetrating neutrinos arriving from cosmic sources. They found instead immense showers of nuclear particles coming, not from above as expected, but from the sides and even below! These huge showers of 1,000 or more assorted particles are called "anomalous cascades." Neutrinos are the only known particles capable of penetrating the entire earth to create upwardly directed showers, but ordinary neutrinos do not seem to have enough energy to give birth to the anomalous cascades. (Anonymous; "Particle Shower Sprays Upward," Science News, 118:246, 1980.) Comment. Are there sources of unrecognized radiation deep within the earth? From Science Frontiers #14, Winter 1981 . 1981-2000 William R. Corliss ...

... astronomers have concluded that these objects must have undergone considerable evolution after they were formed by accretion (the currently accepted mode of formation). Unfortunately these four satellites are so small that they could not have accommodated any reasonable energy source capable of causing the observed crustal evolution. The authors suggest strong local concentrations of radioactive heat generators rather than uniformly distributed radiogenic substances, such as those that helped mould the earth's surface. (Plescia, J.B ., and Boyce, J.M .; "Crater Densities and Geological Histories of Rhea, Dione, Mimas and Tethys," Nature, 295:285, 1982.) Comment. Interestingly enough, local concentrations of radioactivity have been discovered on the moon. From Science Frontiers #20, MAR-APR 1982 . 1982- ... density studies of the small, icy Saturn satellites Rhea, Dione, Mimas, and Tethys reveal important non-uniformities in crater distribution and age. The anomalies are so large that astronomers have concluded that these objects must have undergone considerable evolution after they were formed by accretion (the currently accepted mode of formation). Unfortunately these four satellites are so small that they could not have accommodated any reasonable energy source capable of causing the observed crustal evolution. The authors suggest strong local concentrations of radioactive heat generators rather than uniformly distributed radiogenic substances, such as those that helped mould the earth's surface. (Plescia, J.B ., and Boyce, J.M .; "Crater Densities and Geological Histories of Rhea, Dione, Mimas and Tethys," Nature, 295: ...

... paths followed by lightning strokes often seem unnecessarily tortuous when more direct routes are readily available. The mechanism by which large reservoirs of unlike charges are built up is also obscure. Cosmic rays have now been pro-posed as both a source of charged particles and a provider of low-resistance ionized conduits for lightning to follow. Primary cosmic rays carry considerable energy, most of which appears near the earth's surface in the form of cascades of secondary particles that create complex ionized tracks as they penetrate the dense lower atmosphere. Lightning bolts would tend to follow these precursors along their crooked trails. (Anonymous; "Do Cosmic Rays Trigger Lightning Discharges?" New Scientist, 77:88, 1978.) Comment. Thunderstorm frequency has often been linked to solar activity, and cosmic rays ... discharges well under control. But the discharge paths followed by lightning strokes often seem unnecessarily tortuous when more direct routes are readily available. The mechanism by which large reservoirs of unlike charges are built up is also obscure. Cosmic rays have now been pro-posed as both a source of charged particles and a provider of low-resistance ionized conduits for lightning to follow. Primary cosmic rays carry considerable energy, most of which appears near the earth's surface in the form of cascades of secondary particles that create complex ionized tracks as they penetrate the dense lower atmosphere. Lightning bolts would tend to follow these precursors along their crooked trails. (Anonymous; "Do Cosmic Rays Trigger Lightning Discharges?" New Scientist, 77:88, 1978.) Comment. Thunderstorm frequency has often been ...

... pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Surface life (us!) only a "special case"T. Gold is again challenging our most cherished ideas about geology and life's domain. In the subject article -- his latest paradigm-shaker -- he first reviews the abundant evidence for the existence of large quantities of primordial hydrocarbons deep within the earth and (probably) many other planets throughout the universe. Associated with these hydrocarbons is a "deep, hot, biosphere." By "deep" Gold means 100 kilometers and more. It is this combination of a deep reservoir of hydrocarbons and life forms (probably mostly bacteria) that can account for (among other things): The fact that all helium comes from oil and gas ... 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 ...