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Keyword: humans

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  • Finding Pre-Clovis Humans in the Oregon High Desert

    04/15/2008 6:50:32 PM PDT · by blam · 32 replies · 133+ views
    The Archaeology Channel ^ | Dennis jenkins
    Finding Pre-Clovis Humans in the Oregon High Desert An interview with Dennis Jenkins See Interview About Dennis Jenkins In this interview, conducted at Paisley Five Mile Point Caves on June 13, 2007, by Rick Pettigrew of ALI, Dr. Dennis Jenkins describes the remarkable discovery of human DNA in coprolites dated between 14,000 and 15,000 calibrated years ago. This evidence, reported in the 3 April 2008, issue of the journal Science, strongly supports the proposition that human migrants to North America arrived at least 1000 years before the widespread Clovis complex appeared. The data also support the conclusion that the first...
  • Strange New Fish May See Like Humans

    04/02/2008 6:30:51 PM PDT · by NormsRevenge · 9 replies · 124+ views on Yahoo ^ | 4/2/08 | LiveScience
    While diving in the harbor of a small island in Indonesia recently, husband and wife Buck and Fitrie Randolph, with dive guide Toby Fadirsyair, found a strange fish and took some pictures. The oddball creature looks like an anglerfish, but different. Its eyes, unlike those of nearly all fish, point forward and may allow the fish to gauge depth the way humans do. The flat fish has tan- and peach-colored stripes and rippling folds of skin that obscure its fins. About the size of a human fist, it is soft and pliable enough to slip into narrow crevices of coral...
  • Humans Have More Distinctive Hearing Than Animals, Study Shows

    04/02/2008 5:56:12 PM PDT · by blam · 7 replies · 61+ views
    Science Daily ^ | 4-2-2008 | The Hebrew University of Jerusalem
    Humans Have More Distinctive Hearing Than Animals, Study Shows ScienceDaily (Apr. 2, 2008) — Do humans hear better than animals? It is known that various species of land and water-based living creatures are capable of hearing some lower and higher frequencies than humans are capable of detecting. However, scientists from the Hebrew University of Jerusalem and elsewhere have now for the first time demonstrated how the reactions of single neurons give humans the capability of detecting fine differences in frequencies better than animals. They did this by utilizing a technique for recording the activity of single neurons in the auditory...
  • Upright Walking Began 6 Million Years Ago

    03/20/2008 2:54:39 PM PDT · by blam · 144 replies · 1,947+ views
    Newswise ^ | Stony Brook University Medical Center
    Upright Walking Began 6 Million Years Ago Newswise — A shape comparison of the most complete fossil femur (thigh bone) of one of the earliest known pre-humans, or hominins, with the femora of living apes, modern humans and other fossils, indicates the earliest form of bipedalism occurred at least six million years ago and persisted for at least four million years. William Jungers, Ph.D., of Stony Brook University, and Brian Richmond, Ph.D., of George Washington University, say their finding indicates that the fossil belongs to very early human ancestors, and that upright walking is one of the first human characteristics...
  • Skulls Of Modern Humans And Ancient Neanderthals... Not Natural Selection

    03/20/2008 10:58:20 AM PDT · by blam · 24 replies · 618+ views
    Science Daily ^ | 3-20-2008 | University of California, Davis.
    Skulls Of Modern Humans And Ancient Neanderthals Evolved Differently Because Of Chance, Not Natural SelectionThe approximate locations of the cranial measurements used in the analyses are superimposed as red lines on lateral (A), anterior (B), and inferior (C) views of a human cranium. (Credit: National Academy of Sciences, PNAS (Copyright 2008)) ScienceDaily (Mar. 20, 2008) — New research led by UC Davis anthropologist Tim Weaver adds to the evidence that chance, rather than natural selection, best explains why the skulls of modern humans and ancient Neanderthals evolved differently. The findings may alter how anthropologists think about human evolution. Weaver's study...
  • Out of Africa, Not Once But Twice

    03/17/2008 8:35:50 AM PDT · by blam · 15 replies · 691+ views
    Discovery News ^ | 3-14-2008 | Jennifer Viegas
    Out of Africa, Not Once But Twice Jennifer Viegas, Discovery News Out of Africa March 14, 2008 -- Modern humans are known to have left Africa in a wave of migration around 50,000 years ago, but another, smaller group -- possibly a different subspecies -- left the continent 50,000 years earlier, suggests a new study. While all humans today are related to the second "out of Africa" group, it's likely that some populations native to Israel, Jordan, Lebanon, Syria, Australia, New Zealand and Indonesia retain genetic vestiges of the earlier migrants, according to the paper's author, Michael Schillaci. Schillaci, an...
  • Gorillas Caught Making Love, Human Style

    02/14/2008 11:12:42 AM PST · by quark · 126 replies · 1,554+ views ^ | Feb 14, 2008 | Tuan C. Nguyen
    Gorillas have been caught on camera for the first time performing face-to-face intercourse. Humans and bonobos were the only primates thought to mate in this manner. And while researchers have observed wild gorillas engaged in such an act, it had never been photographed. "Our current knowledge of wild western gorillas is very limited, and this report provides information on various aspects of their sexual behavior," said Thomas Breuer of the Max Planck Institute for Evolutionary Anthropology. "It is fascinating to see similarities between gorilla and human sexual behavior demonstrated by our observation."
  • Lice From Mummies Provide Clues To Ancient Migrations

    02/06/2008 5:34:40 PM PST · by blam · 29 replies · 83+ views
    IHT ^ | 2-6-2008 | John Noble Wilford
    Lice from mummies provide clues to ancient migrations By John Noble Wilford Published: February 6, 2008 When two pre-Columbian individuals died 1,000 years ago, arid conditions in the region of what is now Peru naturally mummified their bodies, down to the head lice in their long, braided hair. This was all scientists needed, they reported Wednesday, to extract well-preserved louse DNA and establish that the parasites had accompanied their human hosts in the original peopling of the Americas, probably as early as 15,000 years ago. The DNA matched that of the most common type of louse known to exist worldwide,...
  • Vets Focus On Neurological Disorders In Dogs, Humans

    01/29/2008 2:26:35 PM PST · by blam · 1 replies · 434+ views
    Science Daily ^ | 1-29-2008 | University of Missouri.
    Vets Focus On Neurological Disorders In Dogs, HumansParkinson's disease and epilepsy strike millions of people each year. They also affect countless dogs. (Credit: iStockphoto/Greg Henry) ScienceDaily (Jan. 29, 2008) — Parkinson's disease and epilepsy strike millions of people each year. They also affect countless dogs, and veterinarians at the University of Missouri are working to find ways to treat these and other neurological diseases in both species. Dennis O'Brien, professor of veterinary medicine and surgery and director of the comparative neurology program in the College of Veterinary Medicine, and a team of researchers are investigating the causes and potential treatments...
  • Skin Color Evolution In Fish And Humans Determined By Same Genetic Machinery

    12/17/2007 1:54:31 PM PST · by blam · 20 replies · 99+ views
    Science Daily ^ | 12-17-2007 | Howard Hughes Medical Institute.
    Skin Color Evolution In Fish And Humans Determined By Same Genetic MachineryOcean sticklebacks are dark colored fish that often migrate into new environments. Multiple stickleback populations have evolved lighter gill and skin colors following colonization of new lakes and streams at the end of the last ice age. Ocean (upper) compared to freshwater creek (lower) sticklebacks, both collected near Vancouver, British Columbia. Scientists have identified a genetic change controlling rapid evolution of skin color in fish, and shown that the same mechanism also contributes to recent evolution of skin color in humans. (Credit: Frank Chan, Craig Miller, and David Kingsley;...
  • Is human evolution speeding up?

    12/12/2007 7:22:02 AM PST · by Renfield · 41 replies · 598+ views
    MSNBC ^ | 12-10-07 | Randolph E. Schmid
    Residents of various continents becoming increasingly different ~~~snip~~~ If evolution had been proceeding steadily at the current rate since humans and chimps separated 6 million years ago, there should be 160 times more differences than the researchers found. That indicates that human evolution had been slower in the distant past, Harpending explained. “Rapid population growth has been coupled with vast changes in cultures and ecology, creating new opportunities for adaptation,” the study says. “The past 10,000 years have seen rapid skeletal and dental evolution in human populations, as well as the appearance of many new genetic responses to diet and...
  • Humans Appear Hardwired To Learn By 'Over-Imitation'

    12/06/2007 8:23:34 AM PST · by blam · 26 replies · 116+ views
    Science Daily ^ | 12-6-2007 | Yale University.
    Humans Appear Hardwired To Learn By 'Over-Imitation' ScienceDaily (Dec. 6, 2007) — Children learn by imitating adults--so much so that they will rethink how an object works if they observe an adult taking unnecessary steps when using that object, according to a new Yale study.Adult retrieves turtle from puzzle box as part of experiment that determined children "over-imitate" adult behavior. (Credit: Yale Department of Psychology) "Even when you add time pressure, or warn the children not to do the unnecessary actions, they seem unable to avoid reproducing the adult's irrelevant actions," said Derek Lyons, doctoral candidate, developmental psychology, and first...
  • Humans Perceive Others' Fear Faster Than Other Emotions

    10/15/2007 2:46:05 PM PDT · by blam · 9 replies · 120+ views
    Science Daily ^ | 10-15-2007 | Vanderbilt University
    Source: Vanderbilt University Date: October 15, 2007 Humans Perceive Others' Fear Faster Than Other Emotions Science Daily — You may not be fully dressed without a smile, but a look of horror will make a faster first impression. Vanderbilt University researchers have discovered that the brain becomes aware of fearful faces more quickly than those showing other emotions. New research has found that the brain processes images of fearful faces faster than images of neutral or happy faces. (Credit: Vanderbilt University) "There are reasons to believe that the brain has evolved mechanisms to detect things in the environment that signal...
  • Lost in a Million-Year Gap, Solid Clues to Human Origins

    09/18/2007 4:05:30 AM PDT · by shrinkermd · 18 replies · 119+ views
    New York Times ^ | 18 September 2007 | John Noble Wilford
    In the study of human origins, paleoanthropology stares in frustration back to a dark age from three million to less than two million years ago. The missing mass in this case is the unfound fossils to document just when and under what circumstances our own genus Homo emerged. The origin of Homo is one of the most intriguing and intractable mysteries in human evolution. New findings only remind scientists that answers to so many of their questions about early Homo probably lie buried in the million-year dark age. It is known that primitive hominids — human ancestors and their close...
  • Dramatic climate shift didn't kill Neanderthals

    09/13/2007 4:11:20 AM PDT · by Renfield · 26 replies · 298+ views
    MSNBC ^ | 9-12-07 | Michael Kahn
    LONDON - Neanderthals probably fell victim to taller and superior Cro-Magnons rather than catastrophic climate change, researchers said on Wednesday. Using a new method to calibrate carbon-14 dating, the international team found the last Neanderthals died at least 3,000 years before a major change in temperatures occurred. This suggests either modern humans or a combination of humans and less severe climate change caused the species' demise some 30,000 years ago, said Chronis Tzedakis, a paleoecologist at the University of Leeds, who led the study published in the journal Nature.....
  • Ancient Humans Walked But 'Struggled To Run'

    09/11/2007 7:51:26 AM PDT · by blam · 33 replies · 741+ views
    The Telegraph (UK) ^ | 9-11-2007 | Roger Highfield and Nic Fleming
    Ancient humans walked but 'struggled to run' By Roger Highfield and Nic Fleming Last Updated: 12:01pm BST 11/09/2007 Ancient humans almost certainly walked upright on two legs millions of years ago but may have struggled to run at even half the speed of modern man, according to computer simulations. A University of Manchester study - presented to the British Association for the Advancement of Science Festival of Science in York- proposes that if early humans lacked an Achilles tendon, as modern chimps and gorillas do, then their ability to run would have been severely compromised. Our early ancestors preferred to...
  • Britain set to okay hybrid embryo research

    09/05/2007 4:15:28 PM PDT · by Tolerance Sucks Rocks · 6 replies · 324+ views
    One News Now ^ | September 5, 2007 | Jim Brown
    A British pro-life group warns that a new type of embryo research, likely to be approved this week by a U.K. government panel, undermines human dignity. Britain's Human Fertilization and Embryology Authority is expected to give a green light this week to U.K. laboratories seeking to create the first animal-human embryos for medical research using eggs taken from dead cows. British scientists want to use the hybrid embryos in order to research genetic diseases. Anthony Ozimic, political secretary for the Society for the Protection of Unborn Children, opposes the embryo-destructive research. He says that an "a-nucleated" cow egg will only...
  • Migration of Early Humans From Africa Aided By Wet Weather

    08/30/2007 10:15:20 AM PDT · by blam · 46 replies · 846+ views
    Science Daily ^ | 8-30-2007 | Geological Society of America
    Source: Geological Society of America Date: August 30, 2007 Migration of Early Humans From Africa Aided By Wet Weather Science Daily — The African origin of early modern humans 200,000--150,000 years ago is now well documented, with archaeological data suggesting that a major migration from tropical east Africa to the Levant took place between 130,000 and 100,000 years ago via the presently hyper-arid Saharan-Arabian desert. This migration was dependent on the occurrence of wetter climate in the region. Whereas there is good evidence that the southern and central Saharan-Arabian desert experienced increased monsoon precipitation during this period, no unequivocal evidence...
  • Early Humans In China One Million Years Ago

    08/06/2007 10:27:06 AM PDT · by blam · 32 replies · 793+ views
    Science Daily ^ | 8-2-2007 | American Geophysical Union
    Source: American Geophysical Union Date: August 2, 2007 Early Humans In China One Million Years Ago Science Daily — Chronology and adaptability of early humans in different paleoclimatic and paleoenvironmental settings are important topics in the study of human evolution. China houses several early-human (Paleolithic) archaeological sites along the Nihewan Basin near Mongolia, some with artifacts that date back about 1 million years ago. Deng et al. analyze one specific locality in the Nihewan Basin, called the Feiliang Paleolithic Site, where several stone artifacts and mammalian bone fragments have been found buried in basin silts. By analyzing remnant magnetizations of...
  • Elephants, Human Ancestors Evolved In Synch, DNA Reveals

    07/26/2007 12:12:38 PM PDT · by blam · 60 replies · 996+ views
    National Geographic ^ | 7-23-2007 | Hope Hamashige
    Elephants, Human Ancestors Evolved in Synch, DNA Reveals Hope Hamashige for National Geographic News July 23, 2007 The tooth of a mastodon buried beneath Alaska's permafrost for many thousands of years is yielding surprising clues about the history of elephants—and humans. A team of researchers recently extracted DNA from the tooth to put together the first complete mastodon mitochondrial genome. The study, published in the journal PLoS Biology, significantly alters the evolutionary timeline for elephants and their relatives. The research may put to rest a contentious debate by showing that woolly mammoths are more closely related to Asian elephants than...