... Science Frontiers ONLINE No. 123: May-Jun 1999 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Caves as musical instruments Sophisticated chemistry in ancient egypt Heads down! Out-henging stonehenge Astronomy Eclipse shadow bands Moonstone in orbit? The storm-swept cosmos Biology Nanobes Strange appetites Flash fish Throwing sand in the gears of molecular clocks Geology Copper pseudomorphs Geophysics Mysterious mountain deaths Puzzling shadows Psychology Phantoms of the brain Focused group energy (fge) Megamemories Unclassified They went a byte too far! ...

... Science Frontiers ONLINE No. 4: July 1978 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bioluminescence And Spurious Radar Echoes March 18, 1977. North Atlantic. Throughout the day, spurious echoes had been appearing on the radar screen aboard the m.v . Ebani. Resembling the echoes from small clusters of fishing boats, they would close to within 5 nautical miles and then disappear. At 2200, echoes appeared, closed to within 5.5 nautical miles, and then spread out around the ship in a circle, all the while maintaining a 5-mile range. At this time, the entire sea took on a milky appearance and a fishy smell was dected. The beam from an Aldis lamp revealed luminescent organisms in the sea. After 45 minutes, both milky sea and spurious radar echoes disappeared together. (Richards, A.W .; "Radar Echoes and Bioluminescence," Marine Observer, 48: 20, 1978.) Comment. Why should radar echoes and bioluminescence be connected? Does the "fishy smell" imply that the milky sea released something into the atmosphere that created a radar target? Other bioluminescent phenomena, including the famous "light wheels" are catalogued in Section GLW in Lightning, Auroras, Nocturnal Lights. For more information on this book, visit: here . From Science Frontiers #4 , July 1978 . 1978-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 13: Winter 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects New Definition For Humans Needed One scientist has defined humans as "tool makers" as distinguished from "tool users." This distinction is necessary because several animals employ tools for simple tasks, such as fishing termites out of holes. However, Kitahara-Frisch points out in this paper that experiments by Wright with a young orangutan proved that at least one animal can actually make tools; that is, use one tool to make another. More specifically, Wright taught the orangutan to strike sharp flint flakes from a core and then use them to cut a cord and gain access to its favorite food. (Kitahara-Frisch, J.; "Apes and the Making of Stone Tools," Current Anthropology, 21:359, 1980.) Comment. Apparently, with orangutans, at least, no manipulative or cognitive barriers exist to prevent them from entering their own Stone Age. Reference. The ability of non-human mammals to manufacture and use tools is cataloged at BMT11 in Biological Anomalies: Mammals I. To order, go to: here . From Science Frontiers #13, Winter 1981 . 1981-2000 William R. Corliss ...

... coffee-table-type volumes are filled with glorious color photos resulting from such research. Much-too-neglected is the Amazon Basin. The belief is widespread that there is nothing of great archeological importance there -- just oppressive jungle, biting bugs, and primitive tribes. That there is much of scientific significance hidden under the lush greenery is just now being realized. For example, A.C . Roosevelt has already proven that surpringly advanced cultures did inhabit the Amazon Basin for thousands of years. ( SF#71 ) We are now learning that some of these Amazon peoples were extraordinary earthmovers. Having little stone to work with, they matched the achievements of the Inca in the mountains just to the west with many miles of earthen causeways. Canals just as long were dedicated to fish-farming. Huge mounds rising above the flood plains supported villages. Even the mounds hold mysteries. One of them, named Ibibate, has been described by anthropologist W. Balee as being: .. .as close to a Mayan pyramid as you'll see in South America.... Beneath the forest cover is a 60-foot [18-meter] human-made artifact. Ibibate is only one of many such mounds in the Bolivian Amazon. Called "lomas", they are obviously quite distinct from any Mayan pyramid we know of. Rather, the lomas are enormous islands of pottery sherds mixed with black soil. Hundreds of these mounds prove that a large population once occupied this region of Bolivia called the Llanos de Mojos (Plains of Mojos). ...

... Science Frontiers ONLINE No. 59: Sep-Oct 1988 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Stele with Unknown Glyphs Found Near Vera Cruz All Roads Lead to Chaco Canyon How and When the Americas Were Peopled Astronomy "? " ! ? Nereid: Grotesque Shape Or Two-faced? Memoirs of A Dissident Scientist Biology Nothing Reacts with Something? Periodic Extinctions and Explosions in Terrestrial Life Aids: Another Great Deceiver Geology Going for Gold Is There Truth in the Grains? Did An Asteroid Impact Trigger the Ice Ages? The New Archaeoperyx Fossil Geophysics Fish and Winkle Showers Lightningless Thunder? Psychology The Enigma of Multiple Personality Observations of Luminous Phenomena Around the Human Body ...

... 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 Bad Year For Water Monsters R. Razdan and A. Kielar describe in a recent issue of the Skeptical Inquirer the results of their 1983 experiments at Lock Ness with a sonar tracking array. Here are their conclusions: "We have shown that continuous sonar monitoring for seven weeks to a depth of 33 meters in an area where many previous sonar contacts had been reported showed no evidence of anything larger than a 1-meter fish. The circumstances under which previous expeditions had obtained sonar and photographic evidence in support of the existence of the Loch Ness monster could not withstand scrutiny. The evidence itself revealed discrepancies. This is especially true of the Academy's flipper photographs, the published versions of which differ from the original computer-enhanced photographs. Careless deployment of equipment and over-zealous interpretation of the data account for much of the so-called scientific evidence. While it is not possible to prove definitely that the monster does not exist, the evidence so far advanced strongly suggests that the Loch Ness monster is nothing more than a long-lived and extremely entertaining legend." The "Academy" mentioned above is the Academy of Applied Science. This article reproduced both the original JPL computer-enhanced photo of the famed flipper and the photo that was widely published. The "retouching" seems extensive. (Razdan, Rikki, and Kielar, Alan; "Sonar and Photographic Searches for the Loch Ness Monster: A Reassessment ...

... 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 Dolphins to the rescue -- again!September 1983. Tokerau Beach, North-land, New Zealand. A pod of 80 pilot whales ran aground and were stranded by the ebbing tide. Local townspeople followed a new technique developed for aiding stranded cetaceans. They waded out, talking soothingly to the whales, and keeping their skins wet. When the tide came back in and refloated the whales, the New Zealanders turned them around and tried to guide them to deeper waters. Sometimes refloated cetaceans just turn around and reground themselves again, but this time the pilot whales were fortunate. A school of dolphins fishing offshore somehow apprehended the situation and swam into the shallows around the pilot whales. The dolphins then guided them out to sea. 76 of the pilot whales were thus saved. In a similar incident 5 years earlier at Whangarei harbor, a helicopter followed the dolphins and whales several miles out to sea, confirming interspecies aid. Such stories are reminiscent of those where drowning humans are helped by dolphins. (Anonymous; "Dolphin Pilots," Oceans, 17:50, 1984.) Reference. More instances where dolphins have come to the aid of humans are presented in BHX3 in Biological Anomalies: Humans III. Ordering information is located here . From Science Frontiers #35, SEP-OCT 1984 . 1984-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 155: Sep - Oct 2004 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Plant diffusion in the pre-Columbian world Did Chinese Ships Anchor off California 1000 years before Columbus found San Salvador? An Olmec-Chinese Connection Astronomy Our Twin Planet? Evidence that Mars is a former Moon! Biology The Itjaritjari Tick-Tock: Telomeres count off the generations of a species' time on Earth Stealth fish Geology The Dwarfing of island megafauna and the remarkable survival of some A double-whammy for the Yucatan, but that's only part of the story Geophysics A sign? Star-of-David ice crystals fall upon West Sussex Hessdalen: Valley of enigmatic lights When coming events really cast their shadows before them! Physics Entangled moments Mathematics Patterns of very loosely knit prime numbers ...

... Science Frontiers ONLINE No. 75: May-Jun 1991 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Platypus Paradoxes After elucidating echidna eccentricities in the preceding item, we now provide platypus paradoxes. Did you know that the platypus bill is a finely tuned instrument with approximately 850,000 electrical and tactile receptors? These are far more sophisticated than those found in fish. When the platypus goes foraging underwater, a furry groove closes, covering its eyes and ears, and the nostrils on the bill are sealed shut. It becomes a high-tech predator -- despite all those snide remarks about its primitive nature. The poison spurs on the back legs of the male platypus are nothing to fool around with. They can cause humans severe pain and weeks of paralysis. And a dog can lose its life when a platypus clamps its legs around its muzzle and drives in its spurs. But, ask evolutionists, how did this poison apparatus get on the hind legs? The supposed ancestors of the platypus, the reptiles, modified their salivary glands for venom delivery. How did the platypusses break from this evolutionary mold and innovate? It's not consistent with the text! The fossil record reveals that a platypus-like creature lived long before the Age of Mammals. These early platypusses had teeth in the adult phase, whereas their modern relatives replace their baby teeth with horny plates -- another innovation. Therefore, far from being a hodgepodge of parts left over from bird and reptile evolution, the platypus has actually pioneered several zoological ...

... Science Frontiers ONLINE No. 101: Sep-Oct 1995 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology FROM THE SUNSWEPT LAGOON Astronomy THE METAL-FROSTED MOUNTAINS OF VENUS! ALH 84001: A MESSAGE FROM MARS OR PERHAPS SOME OTHER PLANET IRONCLAD PROOF OF THE MOON'S ORIGIN? Biology THE ALGORITHMIC BEAUTY OF SEASHELLS MORE HEAR EARS DRAGON FISH SEE RED MALE DOLPHIN KILLS MAN Geology POLAR-BEAR BONES CONFOUND ICE-AGE PROPONENTS A TRIPLE ANOMALY IN A DIAMOND THE GIANT LANDSLIDES OF HAWAII "ALMOST INCONCEIVABLE" CHANGES IN THE GEOMAGNETIC FIELD CHINA'S BERMUDA TRIANGLE Geophysics DEATH WAVES AND SEEBARS STRANGE PHENOMENON DETECTED BY RADARS AND SATELLITES AN ASTONISHING MEDLEY OF BIO LUMINESCENT DISPLAYS Unclassified THE GREAT EXODUS ...

... Science Frontiers ONLINE No. 107: Sep-Oct 1996 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Horizon-to-Horizon Bioluminescent Bubbling Band June 5, 1995. East China Sea. Aboard the m.v . Tokyo Bay enroute Busan to Kaohsiung. "At 1830 UTC whilst the ship was on a course of 218 at 21.5 knots, what seemed to be hundreds of fishing lights were seen right ahead of the ship and stretching from horizon to horizon. As the ship approached them, it became apparent that the lights were bioluminescence. "The appearance was like large single 'blobs' approximately the size of tennis balls, while at the main concentration the water seemed to be 'bubbling up' in a line stretching to both horizons. When the ship passed through the line, the luminescence gave off such a glare, as bright as daylight, that it was possible to read the identification numbers of the containers on the focsle. The duration of the phenomenon was about 5 minutes or 1.5 n.mile." (Hughan, D.S .; "Bioluminescence," Marine Observer, 66:62, 1996) Comment. P.J . Herring, Southampton Oceanography Centre, called this display "a most unusual account which I am unable to interpret." He opined that the blobs were probably cylindrical colonies of luminous sea squirts, but he could not account for the 1.5 -milewide, horizon-to-horizon bright glare and associated bubbling. Reference. For more ...

... Science Frontiers ONLINE No. 51: May-Jun 1987 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology When were the americas peopled? How many migrations were there? Astronomy Supernova problems Were titius and bode right? A LARGER SUN DURING THE MAUNDER MINIMUM Biology First yeti photos? Giant fish reported in china The mite pockets of lizards Evolution through mergers Geology Forests frozen in time A QUESTIONABLE 200-MILLION-YEAR HIATUS Geophysics Shake no quake REMARKABLE PHOTOGRAPH OF THE MARFA LIGHT ANTARCTIC OZONE HOLE HAS COMPLEX STRUCTURE Psychology Glossolalia: possible origins RARE BUT THERE: HYPNOTIC ENHANCEMENT OF EIDETIC IMAGERY ...

... 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 Acoustical Pipes In Beaked Whales?Because they are relatively rare, the comings and goings of beaked whales remain largely unrecorded. These mammals are effectively toothless for predatory purposes. In fact, some marine biologists speculate that they secure their slippery prey by suddenly vacuuming them up by actuating a pumplike tongue. (AR#2 ) But how do the beaked whales find their prey in the first place? With their sonar, of course. But these superbly streamlined animals lack the huge external ears of the sonar-using bats. How do they detect the weak echoes bouncing off fleeing fish? P. Zioupos and J. Currey, at the University of York, have drawn attention to the rostrum bone that forms the beaklike upper jaw of Blaineville's beaked whale. At 2.7 grams/cubic centimeter, this bone is 50% denser than the average mammalian bone. "The bone also turned out to have unique chemical properties. It contains 35 per cent calcium by weight -- 13 per cent more than the highest value known previously. Using microscopes, the team showed that the bone is riddled with tiny tunnels. containing highly concentrated minerals." The channelled nature of this bone make it very brittle, making it unlikely that it is used as a ram in mating bouts. Zioupos and Currey propose that this uniquely structured bone is really an acoustical pipe for the beaked whales' sonar signals. (Barnett, Adrian ...

... and Sagan obviously do not believe that the "bacterial connection" ended there. They bring their article to a close with an almost poetic manifesto that we now quote in part. The context of the quotation is their assertion that plant and animal evolution would never have taken place unless one life form attacked another and the latter defended itself, all this followed by accomodation and the development of a symbiotic relationship. "Uneasy alliances are at the core of our very many different beings. Individuality, independence -- these are illusions. We live on a flowing pointillist landscape where each dot of paint is also alive. Earth itself is a living habitat, a merger of organisms that have come together, forming new emergent organisms, entirely new kinds of 'individuals' such as green hydras and luminous fish. Without a a life-support system none of us can survive. It is in this light that we are beginning to see the biosphere not only as a continual struggle favoring the most vicious organism but also as an endliess dance of diversifying life forms, where partners triumph." (Sagan, Dorion, and Margulis, Lynn; "Bacterial Bedfellows," Natural History, 96:26, March 1987.) Comment. One should observe that there is a strong connection between the Gaia concept of a living planet and the theory of symbiotic evolution. Strong philosophical statements are also inherent in this outlook on life and its development. For example, individuality and free will would seem to be denied. Also, can life forms be "vicious" and yet "cooperative" at ...

... 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 Pennsylvanian time-scale problems The advent of radiometric dating seemed to solve once and for all the problem of assigning dates to the key events in the earth's history. Indeed, all of the reference books confidently label charts with firm dates for the appearance of fishes, the demise of the dinosaurs, and so on. Alas, things are not quite as certain as they appear. Radiometric dating is not all that precise; errors may be large indeed. Take the Pennsylvanian period for example. It is part of the Carboniferous period, when many of the great coal deposits were laid down. The classical duration of the Pennsylvanian -- used in many texts -- is 34 million years. A meticulous new study of central European stratigraphy now pegs the Pennsylvanian as spanning only 19 million years. Now that's a 44% change! This new figure for the duration of the Pennsylvanian has already cast doubt on the origin of the famous Pennsylvanian cyclothems (repetitive strata) in North America. It had been thought that these seemingly cyclic deposits were correlated with sea level changes forced by variations in the earth's orbit (the Milankovitch periods). With this substantial compression of Pennsylvan-ian time, this correlation falls apart. The cyclothems, which are of impressive area and thickness, now seem to have been created by some other, still unrecognized phenomenon. (Klein, George deV.; "Pennsylvanian Time Scales ...

... Sourcebook Project Sourcebook Subjects The Eels Strike Back Credit cards and bank cards are commonly kept in holders made from eelskin. So what! Who likes eels anyway? Well, there may be more to eelskin than meets the eye. Thousands of bank cards, when taken out of their eelskin holders, have failed to work in bank machines. The electronic coding on the cards has somehow been erased or scrambled. Perhaps, says one theory, the eelskins have bits of magnetite in their skins for navigational purposes. (Some other animals have such magnetic particles in their bodies to help orient them.) But could these tiny particles be powerful enough to erase card information? Another theory is that magnetic clamps on purses and handbags are the culprits. (Anonymous; "Credit Cards Fall Prey to Primitive Fish," New Scientist, p. 30, March 3, 1988.) Banking-business bane. From Science Frontiers #57, MAY-JUN 1988 . 1988-2000 William R. Corliss ...

... the field, mating aggregations of 5-17 males were observed formed around these individual attractive males, which we have termed 'she-males.' In competitive mating trials, she-males mated with females significantly more often than did normal males, demonstrating not only reproductive competence but also a possible selective advantage to males with this female-like pheromone." In the competitive mating trials, the she-males were successful in 29 out of 42 trials. The normal males won out in only 13! The authors ask the question: Why aren't all males she-males given such an advantage? (Mason, Robert T., and Crews, David; "Female Mimicry in Garter Snakes," Nature, 316:59, 1985.) Comment. Among the fishes, bluegills and salmon (and probably many others) have female-appearing males competing with normal males. From Science Frontiers #41, SEP-OCT 1985 . 1985-2000 William R. Corliss ...

... Things About May 16, 1983. Chippenham, Wilt shire, England. A group of students at Chippenham Technical College reported that a lot of tadpoles had fallen during a thunderstorm. The River Avon is nearby; and a waterspout or small tornado was suspected. (Meaden G.T .; "Shower of Tadpoles...," Journal of Meteorology, U.K .; 9:337, 1984.) May 26 or 27, 1984. East London. Flounders found on the ground, smelt on the roof. June 19, 1984. Thirsk, North Yorkshire. After a heavy thunderstorm, a small area was covered with winkles (shellfish), some still alive, and starfish. (Rickard, R.J .M .; "A Remarkable Fall of Fish in East London 26 or 27 May 1984," Journal of Meteorology, U.K ., 9:290, 1984.) July 24, 1984. "I was in my car waiting at traffic lights in Winton, Bournemouth, when a sheet of off-white or dove-grey liquid fell from the blue sky on to the roof, windscreen and bonnet of my car. A yellow bus next to me and the road around were also affected." No aircraft could be seen. (Hodge, E.J .; "Fall of a Mysterious Liquid from the Sky," Journal of Meteorology, U.K ., 9:340, 1984.) From Science Frontiers #39, MAY-JUN 1985 . 1985-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 39: May-Jun 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bone Bed Discovered In Florida A new bond bed has been discovered south of Tampa. Paleontologists say it it is one of the richest fossil deposits ever found in the United States. It has yielded the bones of more than 70 species of animals, birds, and aquatic creatures. About 80% of the bones belong to plains animals, such as camels, horses, mammoths, etc. Bears, wolves, large cats, and a bird with an estimated 30-foot wingspan are also represented. Mixed in with all the land animals are sharks' teeth, turtle shells, and the bones of fresh and salt water fish. The bones are all smashed and jumbled together, as if by some catastrophe. The big question is how bones from such different ecological nitches -- plains, forests, ocean -- came together in the same place. (Armstrong, Carol; "Florida Fossils Puzzle the Experts," Creation Research Society Quarterly, 21:198, 1985.) From Science Frontiers #39, MAY-JUN 1985 . 1985-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 45: May-Jun 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Gulper Eel And Its Knotty Problem Occasionally brought up from great depths in nets, the gulper eel consists mainly of a huge mouth followed by a large bag of skin and, finally, a very long thin tail. The eel, often 6 feet long, can swallow prey as large or larger than itself. Such features are not particularly rare in deep-sea-creatures, but we do have to briefly describe this grotesque fish to get a delightful anomaly. It seems that in a few recovered specimens, the thin tail is tied in several overhand knots! Now moray eels can knot themselves, but the gulper eel is just a floating stomach with negligible musculature in its whiplike tail. So, just how did the knots get there? (de Sylva, Donald P.; "The Gulper Eel and Its Knotty Problem," Sea Frontiers, 32:104, March-April 1986.) Comment. We cannot resist mentioning the occasional discovery of groups of rats all tied together by their tails. Called "rat kings," these hapless snarls of rodents are usually dismissed as pranks or outright prevarication. How-ever, in recent years, respected naturalists have found "squirrel kings" in the wild. Gulper eels are not the only animals with knotty problems. From Science Frontiers #45, MAY-JUN 1986 . 1986-2000 William R. Corliss ...

... Some are 3.5 meters in circumference (about 3.8 feet across). When alive, they probably weighed 300 kilograms (660 pounds). About 200 million years ago, according to the geologists, these oysters were thriving under Pacific waters. One must conclude that the Andes rose to their snowy magnificence in a very short period of geological time. (Mayo, Raul; "Descubren Fosiles de Ostras Gigantes en Plena Cordillera," El Comercio, February 28, 2001. Cr. R. Gabbert) Comment. The article calls the fossils "oysters" (" ostras"), but they look more like giant clams. The high Andes boast some curious marine innuendoes. Lake Titicaca is freshened by melting snows but is said to support a species of seahorse and many fish with marine affinities. It drains into lakes that are highly saline. From Science Frontiers #139, Jan-Feb 2002 . 2001 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster . The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com . Free resource for people thinking about working at home. ABC dating and personals . For people looking for relationships. Place your ad free. ...

... course, a brain to process all the signals; but virtually nothing is known about them. (Morreale, Stephen J., et al; "Migration Corridor for Sea Turtles," Nature, 384: 320, 1996. Also: Monastersky, R.; "Do Sea Turtles Stop and Ask for Directions?" Science News, 150:342, 1996.) Rectal gills. Sea turtles are airbreathers that make long, deep dives. To descend deep for long periods, they have evolved a diving adaptation radically different from that employed by the dolphins, whales, and seals; namely, rectal gills. They breathe air at the front end and water at the rear. Water is pulled in through the rectum and directed to sacs lined with blood vessels. These function like fish gills by extracting oxygen from the seawater. The oxygen-depleted water is them expelled and another "breath" is taken. (Green, John; ISC Newsletter, 11:10, no. 3, 1991. Actual publication date: 1997. ISC = International Society of Cryptozoology.) Routes taken by migrating leatherback turtles in 1992. From Science Frontiers #112, JUL-AUG 1997 . 1997-2000 William R. Corliss ...

... Science Frontiers ONLINE No. 91: Jan-Feb 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Crayfish Communication It always comes as a surprise when we find supposedly primitive organisms employing our highly technical concepts; for example, the jamming-avoidance techniques of electric fish (SF#89). Still another potential example has been advanced: The lowly crayfish is now thought to enlist some of our sophisticated information theory. Crayfish often live in noisy environments, where one would expect acoustical information transmission would be degraded. This would be true enough if linear information theory applied, but some, perhaps all, real situations are nonlinear. In such instances, information flow can actually be enhanced by the presence of optimized random noise. Stochastic resonance (SR) is the term applied in such cases of nonlinear statistical dynamics. J.K . Douglass et al write: "Although SR has recently been demonstrated in several artificial physical systems, it may also occur naturally, and an intriguing possibility is that biological systems have evolved the capability to exploit SR by optimizing endogenous sources of noise. Sensory systems are an obvious place to look for SR, as they excel at detecting weak signals in a noisy environment. Here we demonstrate SR using external noise applied to crayfish mechanoreceptor cells. Our results show that individual neurons can provide a physiological substrate for SR in sensory systems." Put more simply, the crayfish nervous system has the potential for cashing in on SR in noisy environments. However, the authors also remark that humans, too, accordingly ...

... are surrounded by mobile, Medusa-like appendages that are richly suppled with nerves and blood vessels. These tentacle-like structures form the "star," which has long been considered a tactile organ used for feeling for prey. However, behavioral experiments by E. Gould et al indicate that the star may be more than a tactile organ. It seems to sport electrical sensors that detect the minute electrical fields surrounding worms, leeches, insect larvae, and other favorite mole tidbits. This conclusion derives from experiments in which starnosed moles preferentially attacked the parts of worms that are most strongly electrical. Actually, scientists have been puzzled as to how this mole found its prey, for this mammal is semiaquatic and somehow locates its dinner in muddy water even though it has poor eyesight. Although some fish possess electrical sensors, they are uncommon in mammals. Half way around the planet, another strange creature, also classified with the mammals, frequents muddy waters looking for the same sort of prey favored by the star-nosed mole. The Australian platypus also has weak vision and employs search techniques similar to those of the mole. Instead of sensor-bearing tentacles on its prow, the platypus has a duck-like bill loaded with electrical sensors. (Gould, Edwin, et al; "Function of the Star in the Star-Nosed Mole, Condylura Crista ," Journal of Mammalogy, 74:108, 1993.) Comment. Curious, isn't it. that such distantly related animals evolve similar organs and hunting strategies when confronted with like environments? This is called ...

... the ancestors of North America's Clovis people are said to have trekked across the Bering land bridge. (Wilford, John Noble; "Chilean Field Yields New Clues to Peopling of Americas," New York Times, August 25, 1998. Cr. M. Colpitts) New Clues. Just to the north of Monte Verde, on the coast of southern Peru, traces of a hitherto unknown, 11,000-year-old maritime culture have emerged. For short, the new site is called QJ-280 (for Quebrada Jaguay 280). QJ-280 is now about 2 kilometers inland from the Pacific Ocean. But 11,000 years ago, sea levels were lower, and it was 7-8 kilometers inland. This site is littered with the bones of fish and marine birds, such as cormorants. The people of QJ-280 were obviously familiar with the sea and exploited it almost exclusively. Whence this maritime culture? Did they come down the coast from North America or across the wide Pacific? Further, the OJ-280 site has yielded obsidian, which could only have come from the highlands 130 kilometers to the east. Did the QJ-280 mariners penetrate that far inland, or did they trade with an unrecognized highland culture? Finally, equally old Paleoindian sites have been researched by A. Roosevelt in the lowlands near the Atlantic coast -- a continent away. These jungle cultures had developed entirely different ways of living from the others just mentioned. In this context, Roosevelt commented: "There's no apparent ancestral relationship ...