... on the glaciated terrains indicate that the final glacial epoch occurred late in Martian history. Thus, Mars may have had a relatively warm, moist climate and dense atmosphere much later than previously believed." (Kargel, Jeffrey S., and Strom, Robert G.; "Ancient Glaciation on Mars," Geology, 20:3 , 1992.) If Mars was warm and wet not too long ago, as implied above, perhaps life did gain a foothold there through either independent invention or, perhaps, through seeding by template-carrying comets or meteorites. P.J . Boston et al have investigated one possible Martian ecosystem: "We have reexamined the question of extant microbial life on Mars in light of the most recent information about the planet and recently discovered nonphotosynthetic ecosystems on Earth -- deep sea hydrothermal vent communities and deep subsurface aquifer communities. On Mars, protected subsurface niches associated with hydrothermal activity could have continued to support life even after surface conditions became inhospitable. Geochemical evidence from the SNC meteorites and geomorphological evidence for recent volcanism suggest that such habitats could persist to the present time...We suggest a possible deep subsurface microbial ecology similar to those discovered to depths of several kilometers below the surface of the Earth." (Boston, Penelope J., et al; "On the Possibility of Chemosynthetic Ecosystems in Subsurface Habitats on Mars," Icarus, 95:300, 1992.) Comment. Although Boston et al speak in terms of microscopic Martian life, there is no reason why chemosynthetic life forms could not be large -- perhaps even ...

... 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 Is life a transitory phenomenon?We don't mean just life on earth, where it has hung on for a couple billion years, but life anywhere in the universe. Many cosmologists advance the socalled Anthropic Principle, which states that the physical constants of nature are honed to just the right values to make life possible. If the charge on the electron were a little less or the properties of carbon a bit different, life could not exist. The Anthropic Principle seems to imply that the universe was designed for earth life. But "design" is a bad word these days. It is redolent of purpose and a supernatural being. Suppose, though, that the Anthropic Principle is correct but only in our part of the cosmos and only for a little while. If the constants of nature are not really constant, life could be just a transitory phenomenon, flaring up here and there wherever conditions are ripe and the Anthropic Principle reigns. The cosmos as-a -whole might be lurching toward other goals or, perhaps, toward nowhere in particular. Enough philosophy! A team of Australian astronomers, led by J.K . Webb, has been trying to determine if the famous fine-structure constant of physics has really remained constant throughout the 12-billion years or so of the universe's history. The fine-structure constant is dimensionless and almost exactly equal to 1/137. (Why 137 ...

... Science Frontiers ONLINE No. 1: September 1977 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Four Extragalactic Sources Expand Faster Than Light Three quasars and one galaxy possess structures that apparently expand faster than light. The sizes of the three qua sars were measured over periods of time by Very Long Baseline Interferometers (VLBIs). In the case of quasar 3C279, the apparent velocity of expansion was ten times that of light. The quasars all have rather large redshifts, indicating great distances from earth, but the lone galaxy displaying "superluminal" expansion has a redshift of only 0.032. This fact suggests that superluminal velocities cannot be employed as arguments against redshifts being cosmological; that is, measures of distances from earth. Therefore, if the redshift is truly a measure of distance (as it seems to be), some astronomical structures (perhaps not matter itself) seem to grow faster than the velocity of light. (Cohen, M.H ., et al; "Radio Sources with Superluminal Velocities," Nature, 268:405, 1977.) From Science Frontiers #1 , September 1977 . 1977-2000 William R. Corliss ...

... Planet Beneath A Youthful Veneer Gerald Wesserburg and Donald de Paolo, two California geologists, have studied the isotopic ratios of neodymium 143 and 144 in both continental and deep-sea lavas. If the underground lava sources were the same, the isotope ratios should be the same. But they are not. Midocean lavas are enriched in neodymium143 compared to continental lavas. Since neodymium-143 is a decay product of samarium, scientists have been able to establish the neodymium isotope ratio from the time of the Big Bang to the present. The isotope ratio for the mid-ocean lavas is just what would be expected on a planet where lighter surface materials had come to the surface during a molten state. The continental lavas, though, must tap very ancient reservoirs, possibly those of a true primitive earth. This ancient core is now swathed with younger materials from who knows where! This young envelope wraps around the whole planet, with the present continents being caused by slight protuberances on the ancient core. Whence the young veneer? A rain of material from some recent close encounter? (Anonymous; "Underground Sites of Ancient Earth," New Scientist, 83:886, 1979.) From Science Frontiers #9 , Winter 1979 . 1979-2000 William R. Corliss ...

... large astronomical object (asteroid or comet) devastated our planet some 65 million years ago. Some scientists, however, propose that the iridium layer was instead deposited through widespread volcanic activity. The proponents of an astronomical mechanism should be heartened by a recent paper in Nature, by W.S . Wolbach et al. Here is their Abstract: "Cretaceous-Tertiary (K -T ) boundary clays from five sites in Europe and New Zealand are 102 -104 -fold enriched in elemental C (mainly soot), which is isotopically uniform and apparently comes from a single global fire. The soot layer coincides with the Ir layer, suggesting that the fire was triggered by meteorite impact and began before the ejecta had settled." The composition of the hydrocarbons in the sediments points to the earth's biomass (mainly surface vegetation) as the source of the soot. The total quantity of K-T soot is equivalent to that which would be produced by burning 10% of all present terrestrial plant material. (Wolbach, Wendy S., et al; "Global Fire at the Cretaceous-Tertiary Boundary," Nature, 334:665, 1988.) Comment. Unmentioned in the above article is the possibility that extensive wildfires might have been generated by volcanic eruptions, perhaps accompanied by great electrical storms. The 1988 fires in Yellowstone needed no meteoric impact. Reference. Chemical anomalies in the earth's crust are cataloged in ESC1 in Anomalies in Geology. To order this catalog volume, visit: here . Concentration "spikes" of iridium, elemental carbon and ...

... Science Frontiers ONLINE No. 103: Jan-Feb 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Einstein's nemesis: di herculis DI Herculis is an 8th-magnitude eclipsing binary about 2,000 light years from earth. These two young blue stars are very close -- only one fifth the distance from earth to our sun. They orbit about a common center of gravity every 10.55 days. So far, no problem! The puzzle is that, as the two stars swing around one another, the axis of their orbit rotates or precesses too slowly. General relativity predicts a precession of 4.27 /century, but for DI Herculis the rate is only 1.05 /century. This does not sound like a figure large enough to get excited about, but it deeply troubles astronomers. D. Popper, an astronomer at UCLA, says: "The observations are pretty clear. I don't think there's any question there's a discrepancy and, frankly, it is an important one and it's unresolved." Accentuating the challenge to general relativity is the discovery that a second eclipsing binary, AC Camelopardalis, also violates general relativity in the same way. It seems that wherever gravitational fields are extremely strong and space-time, therefore, highly distorted, general relativity fails. Ironically, it was a very similar sort of astronomical observation that helped make general relativity a pillar of the scientific edifice early in the 20th. century. The orbit of Mercury precesses a ...

... that originated far from the present position of this state. The units that now make up southern Alaska, for example, started north of the equator 250 million years ago, crossed into the southern hemisphere, and started back north about 160 million years ago. However, the itinerary of northern Alaska cannot even be guessed at. Present thinking is that this portion of the state was close to the geographic north pole during the late Cretaceous. But this is the period when the huge coal deposits were formed on the Arctic slope. Much of this coal comes from evergreens, which could not have survived in high latitudes due to the lack of sunlight. So, the pieces of the puzzle are at hand, but their travels are a mystery. (Anonymous; "Fragmented Alaska," Open Earth, no. 17, 1982.) Reference. For more on exotic terranes, see ESR9 in our Catalog: Inner Earth. Ordering information here . From Science Frontiers #28, JUL-AUG 1983 . 1983-2000 William R. Corliss ...

... landscape of Eugene Island is riven with deep fissures and faults from which spew spontaneous belches of gas and oil. Up on the surface, a platform designated Eugene Island 330 began producing about 15,000 barrels of oil per day in the early 1970s. By 1989, the flow had dwindled to 4,000 barrels per day. Then, suddenly, production zoomed to 13,000 barrels. In addition, estimated reserves rocketed from 60 to 400 million barrels. Even more anomalous is the discovery that the geological age of today's oil is quite different from that recovered 10 years ago. What's going on under the Gulf of Mexico? It is difficult to avoid the conclusion that the oil reservoir at Eugene Island is rapidly refilling itself from "some continuous source miles below the earth's surface." In support of this surmise, analysis of seismic records revealed a deep fault which "was gushing oil like a garden hose." The deep-seated oil source at Eugene Island strongly supports T. Gold's theory about The Deep Hot Biosphere . Gold holds: "that oil is actually a renewable, primordial syrup continually manufactured by the earth under ultrahot conditions and tremendous pressures. As this substance migrates toward the surface, it is attacked by bacteria, making it appear to have an organic origin dating back to the dinosaurs." The apparent deep-seated oil source at Eugene Island and Gold's ideas make petroleum engineers wonder about a similar situation at the seemingly inexhaustible oil fields of the Middle East. "The Middle East has more than doubled ...

... 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 Mounds Of Mystery Unlike many controversies in science, the debates over the origin of the Mima Mounds have been friendly. No one gets overly passionate over bizarre heaps of earth; the Mima Mounds are "fun phenomena." Nevertheless, the biggest of them on the Mima Prairie, near Little Rock, Washington, are very impressive. They are closely-packed, some 6-8 feet high and about 30 feet across. It's kind of eerie walking among them; but they are also fun to ride over in vehicles -- they create a sort of natural roller-coaster effect. There are thousands upon thousands of mounds on the Mima Prairie. Before farmers began leveling them, they stretched for more than 20 miles. If, as some have estimated, they are about 6,000 years old, they were originally twice as high before the elements wore them down. The big question is and always has been: How were these large heaps of churned-up sand, fine gravel, and decayed vegetable matter formed? One has to smile at the dominant theory: pocket! Sure! pocket gophers are bundles of digging energy, but each Mima Mound contains about 100 tons of soil. Multiply that figure by the thousands of mounds, and you begin to wonder about the gopher theory. Also counting against the gophers is the fact that no one has ever found gophers in the mounds, nor has a ...

... prove that it is caused by the influence of the planets, particularly Jupiter with its 11.86-year period. A century of various correlations has convinced almost no one. John P. Bagby has now introduced a new piece to the puzzle of solar-system cyclic behavior. While searching for possible perturbations of the planets due to a tenth major planet or a dark massive solar companion (MSC), he discovered that the perihelia of the outer planets (orbital points closest to the sun) were being disturbed with an average period of 11.2 years. This is almost exactly the sunspot period. This serendipitous finding caused Bagby to wonder whether some common influence was causing not only the sunspot cycle and those perturbations in outer-planet perihelia but also cyclic volcanic and seismic activity on earth. Some correlations indeed do indicate a sun-earth link of some sort. Bagby suggests two possibilities: (1 ) Mutual resonance effects between the planets, (2 ) The effects of a massive solar companion. (Bagby, John P.; "New Support for the Planetary Theory of Sunspots," privately circulated paper, 1983.) Comment. Even "farther out" is the thought that gravitational waves or some unrecognized influence from the galaxy or beyond causes the whole solar system to "ring." In this context, see again the above item on solar vibrations. From Science Frontiers #31, JAN-FEB 1984 . 1984-2000 William R. Corliss ...

... Issues This Issue Sourcebook Project Sourcebook Subjects Falling Masses Swerve South In 1901, Florian Cajori had a paper published in Science with the title: "The Unexplained Southerly Deviation of Falling Bodies." Cajori reviewed the pertinent measurements that had been made prior to 1901 on falling bodies, emphasizing that the anomaly described in the title of his paper truly existed. In a recent letter to the American Journal of Physics, A.P . French brings the record up to date. (It should be pointed out here that a slight easterly deflection of falling bodies is predicted, but that a southerly deflection should be negligible, although not zero.) In the post-1901 experiments, small southerly and northerly deflections have been detected. These should not occur for an ideal rotating sphere -- which the earth isn't . French ends his brief review by stating that the earth's gravitational field is now known well enough so that further experiments with falling objects might once-and-for-all determine the nature (and reality) of the delightful anomaly. (French, A.P ., "The Deflection of Falling Objects," American Journal of Physics, 52:199, 1984.) From Science Frontiers #33, MAY-JUN 1984 . 1984-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 17: Fall 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Too Many Pages Missing The geological record has often been likened to pages in a book, each rock formation being a page, etc. The problem is that this book is not even close to being complete over most of the earth. Woodmorappe has examined the massive geological literature and drawn an extensive (and most impressive) suite of world maps showing just where the ten major geological periods are represented and where they are absent. The statistics are disturbing. Two thirds of the land surface display five or fewer periods; 15-20% of the earth's surface has three or less periods appearing in the "correct" order. Where are all the missing pages? Why, missing pages mean only that no deposition occurred in an area during the period in question or, if it did, erosion wiped it off the record. The "book" of strata forming the vaunted geologic column is really a composite of a few scraps from here and there. The enormity of what is missing is made all to clear by Woodmorappe's maps and statistics. (Woodmorappe, John; "The Essential Nonexistence of the Evolutionary-Uniformitarian Geologic Column: A Quantitative Assessment," Creation Research Society Quarterly, 18:46, 1981.) Comment. Do missing geological pages constitute anomalies? Not when taken one by one, for occasional lapses are to be expected. But taken en masse, the record seems so skimpy that one wonders ...

... Science Frontiers ONLINE No. 71: Sep-Oct 1990 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects PALEOMAGNETIC PITFALLS "Magnetism in rocks has provided a traditional tool for studies of the Earth's geomagnetic field. These studies have tended to rely on the assumption that the direction of magnetization was 'frozen in' during formation of the rock. But many sedimentary rocks formed during the Palaeozoic acquired their remanent magnetization through alteration processes that occurred after deposition of the sediment. The causes and geological significance of this phenomenon have been much debated." The foregoing paragraph is enough to send shivers throughout the geological world. Does this undermine paleomagnetism and generalizations flowing from it, such as plate tectonics? The "alteration processes" mentioned in the above quotation include: (1 ) The chemical conversion of pyrite into magnetite in ancient rocks after they were deposited; and (2 ) The reorientation of remanent magnetization following exposure to moderately high temperatures. That these processes can be important is evident in a second quotation: "During the past eight years, however, evidence has accumulated that the remanent magnetization of many carbonate sediments was not acquired at the time of deposition, thereby invalidating some previous interpretations of the palaeomagnetic data. Instead, magnetization seems to have been acquired over a limited time span during the late Palaeozoic, from about 310 to 250 million years ago." (Reynolds, Richard L.; "A Polished View of Remagnetization," Nature, 345: 570, 1990.) Reference. Many other problems afflict paleomagnetism. See: ...

... Science Frontiers ONLINE No. 76: Jul-Aug 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Catastrophic flooding on mars?Could that parched red planet seen in the Viking pictures have been the site of a colossal flood -- a wall of water greater than anything ever seen on earth? Terrestrial geologists point to the Channeled Scablands in eastern Washington State as evidence of what the sudden release of a huge lake's water can do to the landscape. Everywhere in this part of Washington are deeply incised grooves and dry cataracts separated by water-streamlined bars. Exactly this sort of harsh, scoured topography can be found at Kasei Valles, Mars. "The upper part of the channel system is typically less than 1 km deep and descends from Echus Chasma about 1 km over a distance of 1000 km; it then splits into north and south channels. On the basis of a stereomodel of Viking images, we have measured the geometry of a steep, constricted reach of the north channel that drops 900 m in only 100 km. A late-stage flood is hypothesized to have scoured the channel. If we assume that channel striations indicate water levels, then the flood had a minimum cross-sectional area of 3.12 x 107 m2 (the putative flood had a width of 83 km, an average depth of 373 m, and a maximum depth of 1280 m). These channel measurements suggest that flood vel ocities ranged from 32 to 75 m. s-1 and that discharge was greater than 1 km3 ...

... much less dramatic and often scaled down to minute proportions -- threadlike worms, tiny snails, delicate, transparent clams. Yet, the diversity of animals in the cold abyssal muds, it now appears, may rival the celebrated biodiversity of the tropical rain forests." We now know virtually nothing about this fauna, how it survives, and how it evolved. Millions of undescribed species may be awaiting discovery by research submersibles and deep dredging. (Van Dover, Cindy Lee; "Depths of Ignorance," Discover, 14:37, September 1993.) Comment. Preconceptions about life and its talents have often blinded science as to the extent of life's domains. More revelations are sure to come when biologists begin looking at crevicular life -- those multitudinous species prospering in the earth's deep pores and crevices, where they draw energy from the earth's heat and chemicals. From Science Frontiers #90, NOV-DEC 1993 . 1993-2000 William R. Corliss ...

... snake rattles demonstrate that they can generate 75-100 volts when shaken! What is the electrostatic payoff for snakes in their search for prey? It is hard to say. Who has followed hungry snakes around checking on their electric fields? A clue may lie in the ways snakes use their forked tongues in hunting. When following a chemical trail, snakes usually touch surfaces with their flicking tongues. In general exploration, when chemical trails are absent, snakes seem to wave their tongues up and down in a distinctive manner, avoiding surfaces. Herpetologists usually ascribe this action to chemical "sniffing." However, W.T . Vonstille and W.T . Stille, III, venture a different explanation: "The fact that moist air is conductive for the electric charges that exist on the Earth's surface could be very important to a snake's survival. The airborne plumes of moisture exhaled by animals and flowing out from under cover are invaded by static charges from the Earth and could be detected by snakes." (Vonstille, W.T ., and Stille, W.T ., III; "Electrostatic Sense in Rattlesnakes," Nature, 370:184, 1994.) From Science Frontiers #96, NOV-DEC 1994 . 1994-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 99: May-Jun 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Ancient Modern Life And Carbon Dating Pursuant to the possible effect of the earth's recent envelopment by a molecular cloud on the accuracy of carbon dating (SF#98), we now look at the potential distortion caused by the ingestion of primordial carbon (carbon-13) by plants and animals. Primordial carbon may come from limestone or natural gas welling up from the earth's interior. Modern life forms that metabolize primordial rather than atmospheric carbon dioxide, with its cosmic-ray produced carbon-14, will appear extremely old when carbon-dated. For example, M. Grachev et al carbon-dated flatworms and a sponge collected from a bacterial mat near a thermal vent 420-meters deep in Lake Baikal. The apparent ages of these living organisms ranged from 6860 to 10,200 years. (Grachev, M., et al; "Extant Fauna of Ancient Carbon," Nature, 374:123, 1995) Even animals eating these apparently ancient life forms may take up their carbon-13 and, in effect, be drained of carbon-14. They would appear to age rapidly. Such false aging has actually been induced in the laboratory with mice fed on brewer's yeast grown in natural gas. These mice, living in cages at Lawrence Livermore National Laboratory, California, were carbon-dated as being 13,000 years old, and were expected to attain a ripe old ...

... 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 ...

... Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Ganymede Magnetic Paradox In December 1995, the Galileo space-craft was injected into orbit around Jupiter, thereby becoming the first known artificial satellite of this giant planet. In the five years that have transpired, Galileo has radioed back voluminous data about Jupiter itself and its four large Calilean satellites. These natural satellites have turned out to be a disparate bunch. Three have iron cores, but Callisto breaks the mold with an unusual core of mixed ice and rock. Europa probably possesses an ocean, and Callisto might also. Only one of Jupiter's large satellites, Ganymede, boasts a magnetic field. In fact, Ganymede is apparently the only satellite in the solar system to display an intrinsic, dipole magnetic field like the earth's . Although Ganymere's magnetic field is like that produced by a permanent bar magnet, its core is much too hot for permanent magnetism. Again like the earth, Ganymede's field is theorized to be generated by the convection of electrically conducting liquid in its core -- a dynamo of sorts. All well and good, but Ganymede is so small that it should have cooled off billions of years ago thereby freezing its metallic core. So then, whence its magnetic field? One way out of this box it to suppose that about a billion years ago Ganymede was circling Jupiter in an orbit that took it much closer to this ponderous planet. Then, Jupiter's powerful gravitational field would have gently kneaded Ganymede's structure creating what is called "tidal heating ...

... 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 More on "the massive solar companion"Something big out there beyond Neptune perturbs the orbits of the sun's outer fringe of planets. In addition, there are unexplained perturbations in the orbits of earth satellites, peculiar periodicities in the sunspot cycle, and equally puzzling regularities in earthquake frequency. Infrared detectors have also picked up unidentified objects in the sky. These anomalies might all be explained by the existence of a large, dark planet with several moons -- or, if the mystery object turns out to be very far away, by a very large, dark stellar companion of our sun with its own system of planets. Several astronomers have been trying to pin down the properties of this Planet X or Massive Solar Companion (MSC). John P. Bagby has recently published a novel solution to this nagging puzzle in celestial mechanics. He suggests that the Massive Solar Companion is actually a distributed system; that is, appreciable mass also occupies the several stable Lagrangian points. The total MSC mass might be as much as half the sun's mass, perhaps 100 Astronomical Units (100 times the earth's distance from the sun.) If the MSC and its attendants are this massive, astronomers will have to revise the mass and density of the sun downward by a good bit. (What they have done in the past is estimate the mass of the solar system as a whole and assumed it mostly resides ...

... Science Frontiers ONLINE No. 38: Mar-Apr 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Geophysics: the sick man of science "In order to be a famed geo-scientist and belong to the inclusive club of fully accepted geophysicists in their unknown thousands, one must kneel on the hassock and swear allegiance to the following tenets regardless of any scientific considerations: "Tenet 1. That the moment-of-inertia of the Earth has never changed. "Tenet 2. That the Earth contains a large central core composed of iron. "Tenet 3. That the continents are drifting as a result of unknown forces. "These must be held with religious fervour, dissenters are just not to be tolerated, the devotees feeling it their right, and indeed duty, to defend the creed against all criticism by any means of chicanery and of sharp-practice within their power, however crude and improper, so long as they judge they can get away with it, but all the time representing themselves to the world as acting with judicial calm in the best interests of their science. It will be shown that all three of these tenets are wrong, and how their (naive) acceptance has hamstrung the believers from making progress in the deep waters of terrestrial science, though not of course in the worldly world of 'modern science.' Shades of Sir Cyril Burt." So begins a long technical article by R.A . Lyttleton, author of many scientific books and papers. (He may lose his ...

... 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 Genetic code not universal!Most current textbooks pronounce that the genetic code is not only universal to life but that it must. Alterations in the code, the reasoning goes, would garble genetic messages. Such dogma, however, is based on another dogma, which states that all life on earth derives from a single ancestral line in which the genetic code is fixed and has always been fixed -- a "frozen" accident hit upon "by chance" on the primitive earth. Recently, though, small deviations from the code have turned up in ciliated protozoons and mycoplasmas, much to everyone's surprise. (Scott, Andrew; "Genetic Code Is Not So Universal," New Scientist, p. 2l, April 11, 1985.) Comment. No major deviations from the standard genetic code have been found; but then no one has really looked, because everyone knew the code was universal. It would be quite a shock if terrestrial life were found to have several genetic foundations and as many schemes of evolution. From Science Frontiers #40, JUL-AUG 1985 . 1985-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 12: Fall 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Rehabilitation Of Cuvier Cuvier (1769-1832) was a catastrophist. To him, the record of death in the layers of fossiliferous rocks was obviously the consequence of terrestrial convulsions. But Cuvier's ideas were swept aside by the uniformitarians who saw the earth and its cargo of life unfolding with almost agonizing slowness. But Cuvier is making a comeback, as illustrated by the following back-to-back articles in Nature. We quote from the abstracts. "Closely spaced samples from an uninterupted calcareous pelagic sequence across the Cretaceous-Tertiary boundary reveal that the extinction of planktonic Foraminifera and nannofossils was abrupt without any previous warning in the sedimentary record, and that the moment of extinction was coupled with anomalous trace element enrichments, especially of iridium and osmium. The rarity of these two elements in the crust of the Earth indicates that an extraterrestrial source, such as the impact of a large meteorite may have provided the required amounts of iridium and osmium." (Smit, J., and Hertogen, J.; "An Extraterrestrial Event at the Cretaceous-Tertiary Boundary," Nature, 285:198, 1980.) "Evidence is presented indicating that the extinction, at the end of the Cretaceous, of large terrestrial animals was caused by atmospheric heating during a cometary impact and that the extinction of calcareous marine plankton was a consequence of poisoning by cyanide released by the fallen comet and of a catastrophic rise in calcitecompensation depth in ...

... All Issues This Issue Sourcebook Project Sourcebook Subjects Salt structures on venus?The following quotation is the abstract of a paper appearing in the Bulletin of the American Association of Petroleum Geologists. "The discovery of a surprisingly high deuterium/hydrogen ratio on Venus immediately led to the speculation that Venus may have once had a volume of surface water comparable to that of the terrestrial oceans. We propose that the evaporation of this putative ocean may have yielded residual salt deposits that formed various terrain features depicted in Venera 15 and 16 radar images. "By analogy with models for the total evaporation of terrestrial oceans, evaporite deposits on Venus should be ar least ten to hundreds of meters thick. From photogeologic evidence and insitu chemical analyses, it appears that the salt plains were later buried by lava flows. On Earth, salt diapirism leads to the formation of salt domes, anticlines, and elongated salt intrusions -- features which have dimensions of roughly 1 to 100 km. Due to the rapid erosion of salt by water, surface evaporite landforms are only common in dry regions such as the Zagros Mountains of Iran, where salt plugs and glaciers exist. Venus is far drier than Iran; extruded salt should be preserved, although the high surface temperature (470 C) would probably stimulate rapid salt flow. Venus possesses a variety of circular landforms, ten to hundreds of kilometers wide, which could be either megasalt domes or salt intrusions colonizing impact craters. Additionally, arcuate bands seen in the Maxwell area of Venus could be salt intrusions formed in a region of tectonic stress. These large structures may not ...

... the cratering record? The answer to the first question is: "Not well at all." Further, we can be certain that many craters still lie undiscovered beneath sediments. In addition, most meteors/comets splashed into the oceans, leaving no record at all. An updating of the most recent crater data available, such as they are, greatly weakens the case for the popular 28-31 million-year period and strengthens support for a 19-22 million-year period. But neither cycle is in synchronism with the famous K-T (Cretaceous-Tertiary) Boundary, with its perplexing iridium layer and massive biological extinctions. In fact, say V.L . Sharpton et al, the entire known cratering record could well be the consequence of chance encounters between the earth and stray meteors and comets. Thus would pass the periodicities of this world! (Sharpton, V.L . et al; "Periodicity in the Earth's Cratering Record?" Eos, 68: 344, 1987.) Reference. More details on crater periodicity may be found in ETC4 in our catalog: Carolina Bays, Mima Mounds. For information on this book, see: here . From Science Frontiers #52, JUL-AUG 1987 . 1987-2000 William R. Corliss ...