March 24, 2008: Brightsurf | Science News and Current EventsTuatara, the fastest evolving animal In a study of New Zealand's "living dinosaur" the tuatara, evolutionary biologist, and ancient DNA expert, Professor David Lambert and his team from the Allan Wilson Centre for Molecular Ecology and Evolution recovered DNA sequences from the bones of ancient tuatara, which are up to 8000 years old. A Stellar Explosion You Could See on Earth! Astronomers are familiar with seeing amazing things through their telescopes. But nothing prepared them for an incredible explosion detected early Wednesday morning by NASA's Swift satellite. At 2:12 a.m. EDT, Swift detected an explosion from deep space that was so powerful that its afterglow was briefly visible to the naked eye. Even more astonishing, the explosion itself took place halfway across the visible universe! Black carbon pollution emerges as major player in global warming Black carbon, a form of particulate air pollution most often produced from biomass burning, cooking with solid fuels and diesel exhaust, has a warming effect in the atmosphere three to four times greater than prevailing estimates, according to scientists in an upcoming review article in the journal Nature Geoscience. Therapeutic cloning treats Parkinson's disease in mice Research led by investigators at Memorial Sloan-Kettering Cancer Center (MSKCC) has shown that therapeutic cloning, also known as somatic-cell nuclear transfer (SCNT), can be used to treat Parkinson's disease in mice. The study's results are published in the March 23 online edition of the journal Nature Medicine. Ancient reptile rises from Alberta oil sands One of the oldest and most complete plesiosaur fossils recovered in North America, and the oldest yet discovered from the Cretaceous Period, represents a new genus of the prehistoric aquatic predator according to University of Calgary palaeontologists who have formally described the creature after its remains were uncovered in a Syncrude Canada Ltd. mine near Fort McMurray in 1994. Texas A&M scientists say early Americans arrived earlier A team led by two Texas A&M University anthropologists now believes the first Americans came to this country 1,000 to 2,000 years earlier than the 13,500 years ago previously thought, which could shift historic timelines. UMd-led team finds ancient asteroids formed at solar system's start Using visible and infrared data collected from telescopes on Hawaii's Mauna Kea, a team of scientists, led by the University of Maryland's Jessica Sunshine, have identified three asteroids that appear to be among our Solar System's oldest objects. Soybean varieties viable in southern Indiana, resistant to root-knot nematode Purdue University researchers have identified several soybean varieties that grow well in areas of the Midwest like southern Indiana and are resistant to root-knot nematodes, a plant-destroying parasite with a recently confirmed presence in that part of the state. "Nanominerals" Influence Earth Systems from Ocean to Atmosphere to Biosphere The ubiquity of tiny particles of minerals--mineral nanoparticles--in oceans and rivers, atmosphere and soils, and in living cells are providing scientists with new ways of understanding Earth's workings. Our planet's physical, chemical, and biological processes are influenced or driven by the properties of these minerals. Scripps Florida scientists develop a process to disrupt hepatitis C virion production HCV is a significant human pathogen, infecting more than three percent of the world's population. The incidence of infection in the United States has been estimated to be as high as 4 million cases. Subterfuge, counter-surveillance and assassination: The body's fight with cervical cancer The virus responsible for most cases of cervical cancer has a serious weakness which may provide hope for new treatments for the disease. Action Replay of Powerful Stellar Explosion Astronomers have made the best ever determination of the power of a supernova explosion that was visible from Earth long ago. By observing the remnant of a supernova and a light echo from the initial outburst, they have established the validity of a powerful new method for studying supernovas. Countering an Approaching Water Crisis As growing demand for clean water stretches even the resources of the world's largest industrialized nations, scientists and engineers are turning to new technology and novel ideas to find solutions. Protein protects embryonic stem cells' versatility and self-renewal A protein known as REST blocks the expression of a microRNA that prevents embryonic stem cells from reproducing themselves and causes them to differentiate into specific cell types, scientists at The University of Texas M. D. Anderson Cancer Center report in the journal Nature. First study hints at insights to come from genes unique to humans Among the approximately 23,000 genes found in human DNA, scientists currently estimate that there may be as few as 50 to 100 that have no counterparts in other species. Expand that comparison to include the primate family known as hominoids, and there may be several hundred unique genes. NASA'S Webb Telescope Sunshield Preliminary Design Review Complete The tennis court-sized sunshield built by Northrop Grumman for NASA's James Webb Space Telescope has completed its preliminary design review at the company's Space Technology facility. Physicists team up to learn how quantum mechanical states break down Researchers at the US Department of Energy's Ames Laboratory, the University of California, Santa Barbara, and Microsoft Station Q have made significant advancements in understanding a fundamental problem of quantum mechanics -- one that is blocking efforts to develop practical quantum computers with processing speeds far superior to conventional computers. Their respective theoretical and experimental studies investigate how microscopic objects lose their quantum-mechanical properties through interactions with the environment. Motor neuron disease and toxic substances: Possible link? Motor neuron disease is a rare, devastating illness in which nerve cells that carry brain signals to muscles gradually deteriorate. One form of it, Lou Gehrig's disease or ALS (amyotrophic lateral sclerosis), is familiar to the public in the lives of scientist Stephen Hawking and Morrie Schwartz, about whom Mitch Albom's "Tuesdays with Morrie" was written. Visual technology enables brain to learn in new ways New technology at Tufts University's Center for Scientific Visualization is enabling researchers to translate the most abstract, complex scientific concepts into clearer, more precise 3-dimensional images than conventional visualization systems can create. Yale scientists show that a microRNA can reduce lung cancer growth A small RNA molecule, known as let-7 microRNA (miRNA), substantially reduced cancer growth in multiple mouse models of lung cancer, according to work by researchers at Yale University and Asuragen, Inc., published in the journal Cell Cycle. K-State contributions to red flour beetle genome sequencing featured in March 27 issue of Nature Most of us hate to find the red flour beetle living happily in the flour sack in our pantries. But for several scientists at Kansas State University, and many others throughout the world, this pest of stored grain and grain products is the best organism for studying genetics. Adolescents with chronic insomnia report 'twofold to fivefold' increase in personal problems Documenting a "twofold to fivefold" increase in personal problems among adolescents with persistent sleeplessness, public health researchers at The University of Texas Health Science Center at Houston say they have completed the first prospective study demonstrating the negative impact of chronic insomnia on 11 to 17 year olds. Youth sports concussion program points to need for proper treatment of concussion in children Traumatic brain injury expert Gerard Gioia, PhD, Chief of Neuropsychology at Children's National Medical Center and director of the Safe Concussion Outcome, Recovery and Education (SCORE) Program, has published a successful concussion management program for children based on his pioneering work in this area. The program is one of the first of its kind. APIC launches first national C. difficile prevalence study The Association for Professionals in Infection Control and Epidemiology (APIC) today announced a detailed strategy to combat Clostridium difficile-associated disease (CDAD). Deadly genetic disease prevented before birth in zebrafish By injecting a customized "genetic patch" into early stage fish embryos, researchers at Washington University School of Medicine in St. Louis were able to correct a genetic mutation so the embryos developed normally. Promising new drug targets identified for Huntington's disease Research funded by the Wellcome Trust has provided a number of promising new drug targets for Huntington's disease, a neurodegenerative disease. Scientists at the University of Cambridge have identified a number of candidate drugs to investigate further which encourage cells to "eat" the malformed proteins that lead to the disease. Yerkes researchers identify language feature unique to human brain Researchers at the Yerkes National Primate Research Center, Emory University, have identified a language feature unique to the human brain that is shedding light on how human language evolved. The study marks the first use of diffusion tensor imaging (DTI), a non-invasive imaging technique, to compare human brain structures to those of chimpanzees, our closest living relative. The study will be published in the online version of Nature Neuroscience. Eye test peers into heat-related multiple sclerosis symptoms A bodysuit that heats or cools a patient, combined with painless measurements of eye movements, is providing multiple sclerosis researchers at UT Southwestern Medical Center with a new tool to study the mysterious link between body temperature and severity of MS symptoms. ID, HIV experts urge more resources for TB In honor of World TB Day 2008 (March 24), the Infectious Diseases Society of America (IDSA) and the HIVMA Medicine Association (HIVMA) are urging U.S. policymakers to step up the fight against tuberculosis by committing substantial resources against the disease both at home and abroad. Research to lead to brain tumor therapies Unique human in vitro model (cell culture) research currently underway at the Peninsula Medical School in the South West of England is set to identify and develop therapies for the treatment of multiple tumours in the brain. Study finds pitching mound height affects throwing motion, injury risk A study involving several Major League Baseball pitchers indicates that the height of the pitcher's mound can affect the athlete's throwing arm motion, which may lead to potential injuries because of stress on the shoulder and elbow. Signaling protein helps limit damage in heart attack, Jefferson scientists show Scientists at the Center for Translational Medicine at Thomas Jefferson University in Philadelphia have shown that a specific signaling protein is crucial to protecting the heart and helping it to adapt during a heart attack. Molecular science could further improve leukemia survival, say St. Jude researchers The dramatic increase that has occurred in the cure rate for children with acute lymphoblastic leukemia (ALL) will be difficult to replicate in older patients without considerable additional research. Counselors should target discrimination and be advocates for transgender clients Two University of Oregon doctoral students dove into issues of transgender identities -- in the workplace and professional counseling -- and surfaced with a call for psychologists and vocational counselors to not only treat but to act as advocates for their clients -- and to help end discrimination in the workplace. Can involvement in extra-curricular activities help prevent juvenile delinquency? The study, conducted by Northeastern University researchers, looked separately at delinquency and risky behaviors for both young men and young women in a suburban high school and how involvement in outside activities influenced those behaviors. The findings provided interesting, and, in some cases, surprising results. Is it luck of the draw or skill? Case Western Reserve University psychologist places his bets on skill Is it luck of the draw in poker? No, says Michael DeDonno, a doctoral student from Case Western Reserve University. He suggests putting your bets on skills over luck when playing the card game. |
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