Science Frontiers
The Unusual & Unexplained

Strange Science * Bizarre Biophysics * Anomalous astronomy
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About Science Frontiers

Science Frontiers is the bimonthly newsletter providing digests of reports that describe scientific anomalies; that is, those observations and facts that challenge prevailing scientific paradigms. Over 2000 Science Frontiers digests have been published since 1976.

These 2,000+ digests represent only the tip of the proverbial iceberg. The Sourcebook Project, which publishes Science Frontiers, also publishes the Catalog of Anomalies, which delves far more deeply into anomalistics and now extends to sixteen volumes, and covers dozens of disciplines.

Over 14,000 volumes of science journals, including all issues of Nature and Science have been examined for reports on anomalies. In this context, the newsletter Science Frontiers is the appetizer and the Catalog of Anomalies is the main course.


Subscriptions to the Science Frontiers newsletter are no longer available.

Compilations of back issues can be found in Science Frontiers: The Book, and original and more detailed reports in the The Sourcebook Project series of books.

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Search results for: echo location

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... our modern technological cocoon, we are hardly aware of this rich spectrum of natural phenomena. [Picture caption: Sand craters created by earthquakes] Typical subjects covered: Periodic wells and blowing caves * Sun-dominated tides * Immense, solitary waves * Animal activity prior to earthquakes * Earthquake geographic anomalies * Earthquake electricity * The sound of the aurora * Musical sounds in nature * Mysterious detonations * Anomalous echos * Slicks and calms on water surfaces * Periodicities of earthquakes * The vibrations of waterfalls * Unusual barometric disturbances Comments from reviews: ". .. surprisingly interesting reading", Nature 220 pages, photocopied edition, $16.95p, 32 illustrations, 5 indexes, 1983. 790 references, LC 83-50781, ISBN 915554-11-9 , 7x10 format Rare Halos, Mirages ... -like footprints in ancient rocks; Ancient human handprints; Anomalous Hominid-built hearths and fire areas; Metal artifacts: Low-tech metal artifacts; Familiar metal artifacts claimed to have been found embedded in geologically old rocks; Heavily mineralized, familiar metal artifacts not embedded in bedrook; Enigmatic, artificial-appearing metallic objects found in ancient rocks. Pottery artifacts: Pottery that is anomalous in geographical location and/or age; Enigmatic ceramic artifacts. Stone artifacts: Stone artifacts with anomalous ages; Large assemblages or caches of stone implements; Stone artifacts found in unexpected locations; Pigmy flints and other microliths; Nonutilitarian and totally enigmatic stone artifacts. High-Technology artifacts: Ancient chemistry; Ancient metallurgy; ancient surgery and dentistry; Micro-work -- The magnificent conundrum; Artifacts fashioned from ...
Terms matched: 2  -  Score: 26  -  10 Oct 2021  -  URL: /sourcebk.htm
... sets of signals less than 1 microsecond long. Their individual electroreceptors are not capable of handling such small time differences. Kawasaki has concluded that the jamming avoidance response can come only from highly sophisticated signal processing in the fish's central nervous system. (Kawasaki, Masashi; "Temporal Hyperacuity in the Gymnotiform Electric Fish Eigenmannia ," American Zoologist , 33:86, 1993.) Comment. Echo-locating bats and dolphins also possess sophisticated data processing apparatus for analyzing the echos they receive back from their prey and surroundings. It will be interesting to discover if evolution has come up with similar organic "components" for handling acoustic and electric signals. Further, we know that some insects have developed ears and sound generators to detect and jam hunting bats. Have the prey of electric fish ... corresponding countermeasures? If not, why not? From Science Frontiers #89, SEP-OCT 1993 . 1993-2000 William R. Corliss ...
Terms matched: 2  -  Score: 39  -  15 May 2017  -  URL: /sf089/sf089b06.htm
... bones! But one mystery has been replaced by several. It seems that there were three different species of dolphins, and they were found at the closed ends of underwater passages that were just a bit larger than the living animals themselves. Why did three different species go into the caves at all? Why did they go all the way to the ends of the closed passages, given their excellent echo-location systems? Pertinent here is the discovery of skeletons and recent carcasses of green turtles in similar situations in underwater caves in Indonesia. Turtles lack the dolphins' echo-location equipment, but they are still excellent navigators. (Molnar, R.E .; personal communication, July 2, 1991. Molnar is a scientist at the Queensland Museum.) Comment. Another question comes ... mind: Could the demise of the dolphins in the Fiji caves be related to the occasional strandings of whales and other cetacea on beaches all over the world? Is there a common failure in perception and/or navigation? From Science Frontiers #77, SEP-OCT 1991 . 1991-2000 William R. Corliss ...
Terms matched: 2  -  Score: 51  -  15 May 2017  -  URL: /sf077/sf077b06.htm
... site for the experiment - the radar station at Dye-3 , Greenland - was selected because of the existing 2000- m-deep ice borehole there. Previous analysis of ice-cores from the borehole indicate that the ice density can be accurately modeled. Gravity measurements were made to a depth of 1673 meters in the ice, the sub-ice topography was mapped with high-precision radar echo sounding over a 10-km-diameter region, and a series of 24 locations in a 32-km-diameter network around the hole were surveyed with gravity, leveling, and GPS positioning. "When corrected for the sub-ice topography, a gravity anomaly that accumulated to nearly 4 mGal in 1.4 km was observed. We find measured anomalies can be taken as evidence ... non-Newtonian gravity, but can also be accounted for in terms of Newtonian physics if a suitable distribution of high densiity masses exist beneath the borehole." (Zumberge, Mark Al, et al; "Results from the 1987 Greenland G Experiment," Eos, 69:1046, 1988.) The paper on the Greenland experiment led to a short article in Science in which differing opinions among the re-search team members about the experiment's significance were aired. Some opted for an unusual density distribu-tion of the rock beneath the experiment to explain the results; others thought that the required density distribution was too unlikely and contrived and consequently favored a modification of Newton's inverse-square law. (Poole, Robert; "' Fifth Force' Update: More ...
Terms matched: 2  -  Score: 28  -  15 May 2017  -  URL: /sf062/sf062p13.htm
... Online All Issues This Issue Sourcebook Project Sourcebook Subjects Bats may have invented flight twice (at least!)Bats are divided into megas and micros. The "megabats," represented by the fruit bats, possess an "advanced" connection between their eyes and midbrains. No other mammals except the primates possess this type of advanced visual organization. In contrast, the "microbats," the common echo-locating insect-eaters have a "primitive" eyebrain connection. This deep division in the bat family -- mega/micro, vegetarian/carnivorous, sight-dependent/echolocating -- suggests that mammal flight has developed at least twice. (Pettigrew, John D.; "Flying Primates? Megabats Have the Advanced Pathway from Eye to Midbrain," Science, 231: 1304 ... 1986.) Reference. The problems of bat evolution can be found at BME1 in our catalog Biological Anomalies: Mammals II. Ordering information here . From Science Frontiers #45, MAY-JUN 1986 . 1986-2000 William R. Corliss ...
Terms matched: 2  -  Score: 30  -  15 May 2017  -  URL: /sf045/sf045p08.htm
... Science Frontiers ONLINE No. 46: Jul-Aug 1986 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Are fruit bats primates?The profound differences between the fruit bat (megabats) and echo-locating, insect-eating bats (microbats) were mentioned above. The primate-like eye-brain system of the fruit bats suggests two possibilities: 1. Primitive bats first developed flight and then the fruit bats developed their primate-like eye-brain systems through "convergent evolution"; or 2. The fruit bats inherited their eye-brain system from closely re lated primates and then developed flight through "convergent evolu tion." R.D . Martin, a physical anthropologist and author of this article, has reviewed the morphological ... of the fruit bats and primates. On this basis, he doubts that the fruit bats are pri-mates. Furthermore, molecular studies are also negative. Therefore, possibility #1 above is the more likely one. (Martin, R.D .; "Are Fruit Bats Primates?" Nature, 320:482, 1986.) Comment. In either case, #1 or #2 , we must acknowledge convergent evolution and the likelihood that some subroutine in the genetic code repeats itself in divergent species. Speculative as always, we must ask if the genetic instructions for human or even superhuman intelligence do not reside dormant-for-now in other species. Reference. For more on megabat similarities to primates, go to BMC4 in the catalog volume: Biological Anomalies: mammals ...
Terms matched: 2  -  Score: 30  -  15 May 2017  -  URL: /sf046/sf046p09.htm
... earth. In these cracks, still below the surface, appear the tiny burgundy red flowers. These flowers are pollinated by minute flies, but just how the orchid's seeds are dispersed is still a mystery. (Cooke, John; "Hidden Assets," Natural History, 93:75, October 1984.) Bats navigate by somehow constructing an image of the external world from the echoes of their squeaks. Since bats have but two ears, one wonders how they can develop a three-dimensional image from a two-dimensional sensor; ie., two ears give right-and-left information only. The moustache bat makes up for this deficiency by generating echo-locating pulses at three distinct harmonics: 30, 60, and 90 kilohertz. Its external ears are ... shaped that each of these three frequencies has a different acoustic axis, giving the bat in effect three separate sets of ears pointing in three different directions. Inside the bat's head, in the inferior colliculus of the brain, are three sepa rate sets of neurons sensitive to the three different frequencies. No one knows how the bat processes such information into a "display" it can use in swooping after insects at night. (Anonymous; "The Ins and Outs of a Bat's Ears," New Scientist, 20, August 30, 1984.) Reference. For more on bat navigational prowess, see section BMT3 in our catalog: Biological Anomalies: Mammals II. This volume is described here . The three acoustic axes of the moustache bat. From Science Frontiers # ...
Terms matched: 2  -  Score: 38  -  15 May 2017  -  URL: /sf036/sf036p06.htm
... ONLINE No. 26: Mar-Apr 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Antarctic Meteorite May Have Been Blasted Off The Moon Meteorite ALHA 81005, discovered in the snowy wastes of Antarctica about a year ago, clearly resembles some of the rocks brought back from the moon by the Apollo astronauts. First, the meteorite's isotope ratios echo those found in bona fide moon rocks. Second, the meteorite is a breccia, consisting of small chunks cemented together, some of which are pinkish, magnesium-aluminum-rich spinels sometimes seen in lunar rocks but not terrestrial rocks or ordinary meteorites. Anorthosite is also present -- a type of rock found on the earth and moon but not ordinary meteorites. The implication is that ALHA ... "Early Hints at a Moonish Meteorite," Science News, 123:54, 1983.) Comment. Geologically speaking, the ice and snow of Antarctica are fairly recent. This meteorite may then be evidence of recent astronomical catastrophism that might also have affected the earth. Reference. Anomalous meteorites are cataloged in Section AYE in The Sun and Solar System Debris. A descrption of this book is located here . From Science Frontiers #26, MAR-APR 1983 . 1983-2000 William R. Corliss ...
Terms matched: 2  -  Score: 26  -  15 May 2017  -  URL: /sf026/sf026p04.htm
... Science Frontiers ONLINE No. 10: Spring 1980 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Long-delayed radio echoes J. Hals first observed long-delayed radio echoes in 1927. During the following half-century, scientists have been studying this perplexing problem, but it has been the amateurs who have accumulated the bulk of the data. Over 100 reports exist where echoes of radio transmissions were received seconds later at the original transmitting station. Since light travels 186,000 miles per second, any simple radio-wave reflector would have to be well beyond the moon's orbit. A wide variety of natural phenomena (interplanetary matter) and even artificial devices (alien space probes) have been postulated to explain the long delays. ... natural memory device. The coded signals could then be read out much later when the proper natural conditions developed. Delays of up to 40 seconds might be possible with this "ionospheric memory." (Muldrew, D.B .; "Generation of Long Delay Echoes," Journal of Geophysical Research," 84:5199, 1979.) References. More information on these curius echoes is located at GER1 in our Catalog: Rare Halos, Mirages. For a description of this book, visit: here . From Science Frontiers #10, Spring 1980 . 1980-2000 William R. Corliss ...
Terms matched: 2  -  Score: 79  -  15 May 2017  -  URL: /sf010/sf010p12.htm
... do with reproduction. Then, why do they sing? A clue to the purpose of the blue whales' songs is found in their precision timing. One note is sung every 128 seconds. Furthermore, these notes (sound pulses) carry for hundreds of kilometers. C. Clark, a Cornell scientist, believes these notes are really sonar pulses used for fixing a whale's location. Echoes returned from distant seamounts, continental shelves, and other undersea topography enable the whales to map their positions within the wide ocean basins as they wander far and wide. (Hecht, Jeff; "Rhythm of Blues Charts the Ocean Depths," New Scientist, p. 19, June 20, 1998.) Comment. Short -range sonar is widely used by bats, Oilbirds, Edible ... nothing to do with reproduction. Then, why do they sing? A clue to the purpose of the blue whales' songs is found in their precision timing. One note is sung every 128 seconds. Furthermore, these notes (sound pulses) carry for hundreds of kilometers. C. Clark, a Cornell scientist, believes these notes are really sonar pulses used for fixing a whale's location. Echoes returned from distant seamounts, continental shelves, and other undersea topography enable the whales to map their positions within the wide ocean basins as they wander far and wide. (Hecht, Jeff; "Rhythm of Blues Charts the Ocean Depths," New Scientist, p. 19, June 20, 1998.) Comment. Short -range sonar is widely used by bats, Oilbirds ...
Terms matched: 2  -  Score: 28  -  15 May 2017  -  URL: /sf119/sf119p06.htm
... occurred at 20:55 local time. "At that time I observed a point-shaped luminous object at an elevation of about 20 degrees; it was moving at a rather slow angular velocity from southwest to west approximately. No noise was heard and it looked like an artificial satellite, except for the direction of its motion. Its brightness, color and angular velocity reminded me of the old Echo artificial satellite from the 1960s. The object disappeared from sight during the few seconds it took me to call two persons to participate in the observation. It was not apparent how the object had disappeared from view since there were no sources of obscuration evident. Having become puzzled by this observation I continued watching that same region of sky from time to time. "About fifteen minutes later (22 ... Science Frontiers ONLINE No. 92: Mar-Apr 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Chilean Astronomer Reports Unidentified Atmospheric Phenomena F. Noel is an astronomer at the National Astronomical Observatory located on the outskirts of Santiago. He is a veteran of hundreds of nights worth of stellar observations over almost 30 years. In the latest number of the Journal of Sci entific Exploration, he reported some of his more perplexing sightings in the Chilean skies, two of which are related below: "At approximately 22:30 local time on January 17, 1980, I was in front of my home in the eastern suburbs of Santiago de Chile. The sky was cloudless, although there was some smog, especially in the west in the direction ...
Terms matched: 2  -  Score: 26  -  15 May 2017  -  URL: /sf092/sf092g13.htm
... , Disappearing Islands Zeno maps Chinese Maps of America, Fusang Claim MGP ROCK ART, PETROGLYPHS, PICTOGRAPHS Tattoos Australian Bradshaw Paintings Paisa Petroglyphs Maze Stone Viking-Boat Tablet in America Chinese Motifs in America [MGS] Lascaux Cave Paintings Australian Rock Art, Strange Figures (Wandjina Drawings) Penguins in Mediterranean Mammoths and Elephants in America Michigan Tablets Rabbit-in-Moon Motif: Its Diffusion Rock Art and Echoes Anubis Cave Art Egypt in America Elephant Slabs Stone Age Art Sophistication Ostrich Domestication as Shown in Art Serpent Motif: Diffusion Pedra Furada Rock Art Holly Oak Pendant Fraud Tennessee Cave Art Red Bands in Caves Egypt in Australia Egypt in South Africa Mammoths in Egypt Ohio Copper Tablets China in South America Egyptian Electricity Palenque Astronaut China in India Jinmium [MGS Symbols] Horses in South America Microscopic Engraving MGQ QUIPUS ... Cumbre: Peru's Intervalley Canal MSC3 Subterranean Tunnel-Well Systems MSC4 Water-Condensing Structures MSC5 Three Notable Ancient Irrigation Systems MSC6 Curious Old Dams MSC7 Unusual Water-Containment Structures MSC8 Notable Ancient Ship Canals MSC9 Artificial Harbors MSD MENHIRS, DOLMENS, ROCKING STONES MSD1 Some Minor Enigmas Concerning Menhirs MSD2 Menhirs in Unexpected Places MSD3 Er Grah as a Foresight in an Eclipse Predictor MSD4 Dolmen-Like Structures Located Outside of Western Europe MSD5 Rocking Stones MSE EXCAVATED STRUCTURES MSE1 Lines of Pits MSE2 Puzzling Pits: A Survey MSE3 Unusual Ancient Shafts and Tunnels: A Survey MSE4 The Oak Island Shaft and Tunnels MSE5 Remarkable Ancient Mines and Quarries: A Survey MSE6 Production-Consumption Discrepancy in Prehistoric Lake Superior Copper Mining MSE7 Sculpted Hills and Mountains MSE8 Terrestrial Zodiacs and Star Maps MSF FORTS MSF1 Earthen Hilltop Forts: ...
Terms matched: 2  -  Score: 10  -  15 May 2017  -  URL: /cat-arch.htm
... Appendix Nostril Cycling [BHF3] BHT UNUSUAL SENSES AND FACULTIES BHT1 Telescopic Vision BHT2 Moonblindness BHT3 Blindsight BHT4 A TV-Snow Visual Phenomenon BHT5 Color-Vision Deficiency of Ancient Peoples BHT6 Color Sensitivity Correlated with Lunar Phase BHT7 Anomalies in the Evolution of Color Vision BHT8 Dermo-Optical Perception [PHD] BHT9 Visual Phenomena from the Passage of High-Energy Particles through the Eyes BHT10 Facial Vision or Human Echo Ranging BHT11 Our Sound-Suppression Faculty BHT12 Electromagnetic Radiation Perceived as Sound BHT13 Hearing under Anesthesia BHT14 Variability and Sophistication of Human Tone Perception BHT15 Anomalous Communication in Children BHT16 Discontinuity in the Evolution of Communication BHT17 The Ability to Sense and/or Detect Magnetic Fields BHT18 Human-Navigation Senses BHT19 Exposure to Low-Frequency Electromagnetic Field Lengthens Reaction Time BHT20 Human Drowning Proneness BHT21 Human Diving Reflex Unique among ... Ears and So-Called Gill-Slits BHA41 Nostril Orientation and Musculature BHA42 Differences and Similarities between Human and Primate Teeth BHA43 Racial Dental Differences BHA44 Historical Shrinkage of Human Teeth BHA45 Extra Dentitions BHA46 Human Horns BHA47 Unusual, Inherited Characteristics of Feet BHA48 Progressive Loss of the Little Toe BHA49 Webbed Hands and Feet BHA50 Alleged Primitive Character of Human Hands and Feet BHA51 Large Female Breasts and Buttocks BHA52 The Unusual Location of Human Breasts BHA53 Human Tails BHA54 Concordance of Human Embyro Growth and Evolutionary Developments BHA55 Anomalous Human Odors Babies Born with Full Sets of Teeth Presidential Stature Correlated with Competence Brown Line (Linea Nigra) on Stomachs of Pregnant Women Humans As Robots Height Correlated with Month of Birth Human Proportions and the Golden Ratio Humans Nuturing Foetuses of Their Twins Human Pheromones Correlated with Beauty Pixies and the Williams Syndrome Change ...
Terms matched: 2  -  Score: 10  -  15 May 2017  -  URL: /cat-biol.htm

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