ScienceDaily: Latest Science News |
| 'Sobering' Decline Of Caribbean's Big Fish, Fisheries: Overfishing Deemed Most Likely Cause Posted: 06 May 2009 11:00 AM PDT Sharks, barracuda and other large predatory fishes disappear on Caribbean coral reefs as human populations rise, endangering the region's marine food web and ultimately its reefs and fisheries, according to a sweeping study. |
| Snippet Of RNA Helps Make Individuals Remarkably Alike Posted: 06 May 2009 11:00 AM PDT Uniformity, or singleness of form, is a general property of life. Biologists have long pondered how this feature is produced in the face of such great variation in genetics and environmental conditions. Researchers now have identified a microRNA that is critical to the robustness of the molecular network that helps regulate uniformity. This knowledge could lead to a better understanding of cancer cells, which do not act in controllable, uniform ways. |
| Electronic Books: Make Brighter, Full-color Electronic Readers Posted: 06 May 2009 11:00 AM PDT Thinking about getting an e-reader but not sure if you like reading the dim screen? For the first time "e-paper" will achieve the brilliance of printed media. "This takes the Amazon Kindle, for example, which is black and white, and could make it full color," one of the developers says. |
| Hepatitis C: Added Anti-viral Improves Response, Halves Duration Of Treatment, Study Suggests Posted: 06 May 2009 11:00 AM PDT The addition of the anti-viral drug telaprevir to a standard treatment for hepatitis C can shorten the duration of therapy and increase the number of patients who can be cured of their disease, according to the results of study coordinated by investigators from the Duke Clinical Research Institute. |
| 3T MRI Detects 'Early' Breast Cancer Not Seen On Mammography And Sonography Posted: 06 May 2009 11:00 AM PDT 3T MRI, a powerful tool for evaluating patients with a high risk of having breast cancer, can detect a significant number of lesions not found on mammography and sonography, according to a new study. |
| Alcohol Drinkers Not Only Zone Out -- But Also Are Unaware That They Do Posted: 06 May 2009 11:00 AM PDT A new study suggests that a moderate dose of alcohol increases a person's mind wandering, while at the same time reducing the likelihood of noticing that one's mind has wandered. |
| Nanoneedle Is Small In Size, But Huge In Applications Posted: 06 May 2009 08:00 AM PDT Researchers have developed a membrane-penetrating nanoneedle for the targeted delivery of one or more molecules into the cytoplasm or the nucleus of living cells. In addition to ferrying tiny amounts of cargo, the nanoneedle can also be used as an electrochemical probe and as an optical biosensor. |
| Estrogen Controls How The Brain Processes Sound Posted: 06 May 2009 08:00 AM PDT Scientists have discovered that the hormone estrogen plays a pivotal role in how the brain processes sounds. |
| Astronomer To Search Space For Precursors Of Life Posted: 06 May 2009 08:00 AM PDT Many of the organic molecules that make up life on Earth have also been found in space. Astronomers will use the Herschel Space Observatory to study these chemical compounds in new detail in the warm clouds of gas and dust around young stars. |
| No Clear Winner Among Fillings For Childhood Cavities Posted: 06 May 2009 08:00 AM PDT So far, there is a not a clear winner among the types of fillings used to repair childhood cavities, according to a new review. |
| Tiny Plant Virus May Be Useful As Drug Deliver Agent Posted: 06 May 2009 08:00 AM PDT We typically view viruses as scourges. But scientists are hoping to enlist the help of one particular virus to treat disease. Their discovery that the tiny plant virus, cowpea mosaic virus, attaches itself to a specific protein on mammalian cells brings them closer to achieving this mission. Researchers are moving a step closer to using these virus particles as drug 'delivery' agents. |
| Posted: 06 May 2009 08:00 AM PDT When pandemics occur, correctional facilities are not immune. With more than 9 million people incarcerated across the globe 2.25 million in US jails and prisons alone it is vital that correctional officials and health professionals be prepared for a worst-case scenario that involves pandemic influenza reaching inmates and staff. |
| Underwater Robot With A Sense Of Touch Posted: 06 May 2009 05:00 AM PDT Maintenance of offshore drilling rigs or underwater cables, taking samples of sediment -- underwater robots perform a variety of deep-sea tasks. Research scientists now aim to equip robots with tactile capability so that they can orientate themselves better under the sea. |
| Does New Swine Flu Virus Kill By Causing A 'Cytokine Storm'? Posted: 06 May 2009 05:00 AM PDT The swine flu outbreak that began in Mexico and continues to spread around the globe may be particularly dangerous for young, otherwise healthy adults because it contains genetic components of the H5N1 avian influenza virus, which can induce a "cytokine storm," in which a patient's hyper-activated immune system causes potentially fatal damage to the lungs. |
| Limping Rat Provides Sciatica Insights Posted: 06 May 2009 05:00 AM PDT A newly developed animal model for the painful nerve condition known as sciatica should help researchers diagnose and treat it, according to bioengineers and surgeons. |
| Posted: 06 May 2009 05:00 AM PDT Cryoprotectants needed to preserve eggs for reproduction need to be given in stages, albeit rapid ones, say scientists who have developed a mathematical model that predicts optimal time for loading and unloading these drugs. |
| Ancestor Of HIV In Primates May Be Surprisingly Young Posted: 06 May 2009 05:00 AM PDT The ancestors of the simian immunodeficiency viruses (SIVs) that jumped from chimpanzees and monkeys, and ignited the HIV/AIDS pandemic in humans, have been dated to just a few centuries ago. These ages are substantially younger than previous estimates. |
| Concerns Over Dietary Supplements Raised Posted: 06 May 2009 05:00 AM PDT As the FDA warns consumers to stop using Hydroxycut products, a new editorial shows that this FDA warning is not unique. |
| How Social Insects Recognize Dead Nestmates Posted: 06 May 2009 02:00 AM PDT When an ant dies in an ant nest or near one, its body is quickly picked up by living ants and removed from the colony. The predominant understanding among entomologists was that dead ants release chemicals created by decomposition that signal their death to the colony's living ants. But entomologists working on Argentine ants provide evidence for a different mechanism for how necrophoresis -- the removal of dead nestmates from colonies -- works. |
| Statin Drugs May Protect Against Cancer And Also Result in Fewer Gallbladder Removals Posted: 06 May 2009 02:00 AM PDT The commonly used prescription statin drugs may have a protective effect in the prevention of liver cancer and lead to a reduction in the need for gallbladder removals. As millions of Americans use statins each day to help lower their cholesterol and risk of heart disease, researchers are learning of the beneficial effects these drugs may have on gastrointestinal disorders. |
| Iron-arsenic Superconductors In Class Of Their Own Posted: 06 May 2009 02:00 AM PDT Scientists have found that the iron-arsenide superconductors discovered last year exhibit a superconducting mechanism unique compared to all other known classes of superconductors. Combine that with its ability to carry a good current, and iron-arsenides may open the door to exciting possible applications in zero-resistance power transmission. |
| Protein Effects Of Hormone Replacement Therapy Uncovered Posted: 06 May 2009 02:00 AM PDT An in-depth proteomic analysis of the sera of 50 participants from the Women's Health Initiative hormone replacement therapy trial provides some explanations for the trial's clinical results. The study shows that estrogen upregulates proteins involved in several major body processes. |
| Computer Use Significantly Affected By Arthritis Posted: 06 May 2009 02:00 AM PDT Computers are increasingly used in daily life: 56 percent of workers use one on the job and 62 percent of households own one. |
| ADHD Linked To Sleep Problems In Adolescents Posted: 06 May 2009 02:00 AM PDT Adolescents with a childhood diagnosis of Attention deficit/hyperactivity disorder (ADHD) are more likely to have current and lifetime sleep problems and disorders, regardless of the severity of current ADHD symptoms. Authors suggest that findings indicate that mental health professionals should screen for sleep problems and psychiatric comorbidities among all adolescents with a childhood diagnosis of ADHD. |
| New Antarctic Seabed Sonar Images Reveal Clues To Sea-level Rise Posted: 05 May 2009 11:00 PM PDT Motorway-sized troughs and channels carved into Antarctica's continental shelves by glaciers thousands of years ago could help scientists to predict future sea-level rise, according to a new article in the journal Geology. |
| Why Certain Arterial Plaques Can Turn Deadly Posted: 05 May 2009 11:00 PM PDT A common misconception about arterial plaque is that it inevitably leads to a heart attack or a stroke. New research however, sheds light on why so few plaques in any given individual actually cause a problem. Furthermore, the research has identified a key protein that may promote the conversion from benign to dangerous plaques. |
| Two Brown Bear Populations In Spain In Danger of Extinction Have Been Isolated For Past 50 Years Posted: 05 May 2009 11:00 PM PDT The situation of bears in the Iberian Peninsula is critical. Researchers have confirmed that brown bears (Ursus arctos) belonging to the Cantabrian mountain range, divided into eastern and western sub-populations, show a low level of genetic variation, data which, in conjunction with the small population size, places the bears in a critical situation. |
| Posted: 05 May 2009 11:00 PM PDT Investigators have determined that two types of kidney tumors previously thought to be different diseases are actually variations of the same disease. This finding will help doctors to more accurately diagnose the disease in patients, and demonstrates the importance of using molecular data to diagnose cancer in general. |
| Posted: 05 May 2009 11:00 PM PDT Physicists have found that single-atom contacts made of ferromagnetic metals like iron, cobalt and nickel exhibit behavior consistent with the Kondo effect. The unexpected behavior appears to arise due to the tendency of the electrons on the last atom of material to align their spin in a countervailing direction from that of neighboring electrons. |
| Bedtime Routine Improves Sleep In Infants And Toddlers, Maternal Mood Posted: 05 May 2009 11:00 PM PDT The use of a consistent bedtime routine contributes to improvements in multiple aspects of infant and toddler sleep, bedtime behavior and maternal mood. |
| Erupting Undersea Volcano Near Island Of Guam Supports Unique Ecosystem Posted: 05 May 2009 08:00 PM PDT Scientists who have just returned from an expedition to an erupting undersea volcano near the Island of Guam report that the volcano appears to be continuously active, has grown considerably in size during the past three years, and its activity supports a unique biological community thriving despite the eruptions. |
| New View Of HIV Entry May Lead To Next-generation Of Inhibitors Posted: 05 May 2009 08:00 PM PDT Scientists may need to rethink the design of drugs meant to block HIV from infecting human cells, according to a new study. That's because the new report shows that HIV doesn't enter cells in the way that experts had generally assumed it did. |
| Heart Attacks: The Tipping Point Posted: 05 May 2009 08:00 PM PDT Researchers have designed a new non-invasive procedure to predict and treat heart attacks. |
| Dietary Acrylamide Not Associated With Increased Lung Cancer Risk In Men Posted: 05 May 2009 08:00 PM PDT Dietary acrylamide was not associated with an increased risk of lung cancer, according to data from a large prospective case-cohort study. |
| Better Water Use Could Reduce Future Food Crises Posted: 05 May 2009 08:00 PM PDT If the overall water resources in river basins were acknowledged and managed better, future food crises could be significantly reduced. |
| Program Improves Language Skills In Deaf, Hard Of Hearing Posted: 05 May 2009 08:00 PM PDT Children enrolled before they are six months old in a home-based program that teaches language skills to the deaf or hard of hearing are not only able to achieve appropriate language skills but also to maintain them over time, according to a new study. |
| Children Bullied At School At High Risk Of Developing Psychotic Symptoms Posted: 05 May 2009 05:00 PM PDT Children who are bullied at school over several years are up to four times more likely to develop psychotic-like symptoms by the time they reach early adolescence. |
| New Sequencing Technique To Prod Medical Benefits From Killer Venom Posted: 05 May 2009 05:00 PM PDT King Kong toxin, a component of the venom in some poisonous marine snails, has a peculiar power to go with its peculiar name. When injected into a meek little lobster in a tank full of superiors, the poison induces delusions of grandeur; the little guy starts marching around like he's king of the tank. Any given venom can contain hundreds of toxins such as King Kong, including some that are medically useful, but teasing them out of a venom sample is no mean feat. |
| Ecosystem Gone Haywire: Cape Gannet Bird Threatened With Extinction Posted: 05 May 2009 05:00 PM PDT The ecosystem of the Cape Gannet, a protected bird species, has gone haywire. As a result of overfishing, the birds are no longer able to find enough food to rear their young. Pelicans, kelp gulls and seals are becoming increasing threats -- the lack of fish means that these predators are attacking Cape Gannet chicks more often. |
| Arterial Disease Of The Leg Frequently Overlooked In Patients With Heart Disease Posted: 05 May 2009 05:00 PM PDT Early detection of PAD is important because it can limit the ability to walk and exercise, it may place patients at greater risk for limb loss and it increases the chance of having a heart attack or stroke. |
| Giant Trilobites And Trilobite Clusters From The Ordovician Of Portugal Posted: 05 May 2009 05:00 PM PDT Fossils from 465 million years ago recently discovered in Portugal have revealed the huge size reached by trilobites, the most diverse group of extinct marine arthropods. Geologists describe the largest trilobites ever found, which, in life, would have reached up to 90 centimeters (35 inches). |
| Autism Diagnosis Often Made Years After It Was Possible Posted: 05 May 2009 05:00 PM PDT Research shows autism diagnosis not occurring soon enough. A new study finds that the average age for children being diagnosed with autism is almost six years old. This is three to four years later than diagnosis is possible. |
| About 200 New Species Of Amphibians In Madagascar Discovered Posted: 05 May 2009 02:00 PM PDT Between 129 and 221 new species of frogs have been identified in Madagascar, practically doubling the currently known amphibian fauna. The finding suggests that the number of amphibian species in Madagascar, one of the world's biodiversity hotspots, has been significantly underestimated. According to the researchers, if these results are extrapolated at a global scale, the number of amphibian species worldwide could double. |
| Thyroid Cancer Increasing, Scientists Don't Know Why Posted: 05 May 2009 02:00 PM PDT It's a medical mystery that has been developing for at least a decade: thyroid cancer --- not breast, prostate, lung, or colon cancer --- is the fastest increasing cancer among women and men in the United States. |
| Kidney Stones In Children On The Rise, Expert Says Posted: 05 May 2009 02:00 PM PDT When Lisa Garnes received a call from her daughter's daycare saying that 3-year-old Emma was complaining of back pain, she never dreamt the cause would be a condition often associated with middle aged men: kidney stones. |
| How Some Immune Cells Improve Cancer Outcome Posted: 05 May 2009 02:00 PM PDT For a number of cancers, including neuroblastoma (the second most common tumor in children), tumor infiltration by a subset of immune cells known as V-alpha-24-invariant NKT cells is associated with a favorable outcome. But how these cells have an anticancer effect is unclear, as many tumors do not express the protein that V-alpha-24-invariant NKT cells target. |
| Nuclear Masses Measured To Within A Hair’s Precision Posted: 05 May 2009 02:00 PM PDT Researchers have made precise mass measurements of four such nuclei, 68-selenium, 70-selenium, 71-bromine and an excited state of 70-bromine. The results may make it easier to understand X-ray bursts, the most common stellar explosions in the galaxy. |
| First Neuroimaging Study Examining Motor Execution In Children With Autism Reveals New Insights Posted: 05 May 2009 02:00 PM PDT In the first neuroimaging study to examine motor execution in children with autism, researchers at have uncovered important new insight into the neurological basis of autism. The study compared the brain activity of children with high functioning autism and their typically developing peers while performing a simple motor task -- tapping their fingers in sequence. |
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