ScienceDaily: Latest Science News |
| DNA Evidence Is In, Psychedelic Looking Bouncing Fish Is A New Species, Dubbed 'Psychedilica' Posted: 25 Feb 2009 11:00 AM PST "Psychedelica" seems the perfect name for a fish that is a wild swirl of tan and peach zebra stripes and behaves in ways contrary to its brethren, including bouncing like a ball along the seafloor instead of swimming. The fish, which has rare forward-facing eyes like humans, also has a secretive nature. That could be the reason they weren't spotted by divers until just last year nor described in the scientific literature until now. |
| Hormone Disorder Drug Could Help Drinkers Stay Sober Posted: 25 Feb 2009 11:00 AM PST A drug prescribed for male and female infertility and menstrual disorders could hold the key to a more effective treatment for alcoholism, according to a new study. |
| Are Women More Generous? New Study Sheds Light On Donation Behavior Posted: 25 Feb 2009 11:00 AM PST Why would women give more to the victims of Hurricane Katrina than to the victims of the Indian Ocean tsunami? A new study sheds light onto the way gender and moral identity affect donations. |
| Family History Of Melanoma Linked To Parkinson's Disease Posted: 25 Feb 2009 11:00 AM PST People with a family history of melanoma may have a greater risk of developing Parkinson's disease, according to a new study. |
| 40-year Mystery Revisited: Newtonian System Mimics 'Baldness' Of Rotating Black Holes Posted: 25 Feb 2009 11:00 AM PST In 1968, theoretical physicist and cosmologist Brandon Carter showed that a particle's wild gyrations while orbiting a rotating black hole nevertheless hold another variable fixed, which was named the "Carter constant," remaining somewhat mysterious 40 years later. Now Clifford M. Will, of Washington University has shown that, even in Newton's theory of gravitation, arrangements of masses exist whose gravitational field also admits a Carter-like constant of motion, in addition to energy and angular momentum. |
| Sexual Lyrics In Popular Songs Linked To Early Sexual Experiences Posted: 25 Feb 2009 11:00 AM PST With sexual activity among adolescents in the United States resulting in over 750,000 teenage pregnancies each year, researchers and public health officials are looking for those factors that might increase sexual activity in teens. Researchers have found that teenagers who preferred popular songs with degrading sexual references were more likely to engage in intercourse or in pre-coital activities. |
| Alps-like Mountain Range Exists Under East Antarctic Ice Sheet Posted: 25 Feb 2009 08:00 AM PST Flying twin-engine light aircraft the equivalent of several trips around the globe and establishing a network of seismic instruments across an area the size of Texas, scientists have not only verified the existence of a mountain range that is suspected to have caused the massive East Antarctic Ice Sheet to form, but also have created a detailed picture of the rugged landscape buried under more than four kilometers (2.5 miles) of ice. |
| Babies Born In Pollen And Mold Seasons Have Greater Odds Of Developing Asthma Symptoms Posted: 25 Feb 2009 08:00 AM PST A new study suggests that newborns whose first few months of life coincide with high pollen and mold seasons are at increased risk of developing early symptoms of asthma. |
| Antibiotic Resistance: Rising Concern In Marine Ecosystems Posted: 25 Feb 2009 08:00 AM PST A team of scientists are calling for new awareness of the potential for antibiotic-resistant illnesses from the marine environment, and pointed to the marine realm as a source for possible cures of those threats. |
| New Research Identifies Faster Detection Of Viruses Posted: 25 Feb 2009 08:00 AM PST Scientists can now detect viruses more specifically and faster than ever before. Viruses can currently be detected in fluids and their detection is of major importance in medical diagnostics. However, despite recent advances, current assays are time consuming and labor intensive. New research shows a more efficient and practical system in detecting the viruses by using micro-sized cantilevers to directly detect viruses binding to membrane proteins. |
| Scientists Prove Graphene's Edge Structure Affects Electronic Properties Posted: 25 Feb 2009 08:00 AM PST Graphene, a single-atom-thick sheet of carbon, holds remarkable promise for future nanoelectronics applications. However, whether graphene actually cuts it in industry depends upon how graphene is cut, say researchers. |
| Don't Flatter Yourself: Why Survey Research Can Be Flawed Posted: 25 Feb 2009 08:00 AM PST We all do things to impress others -- exaggerate our accomplishments, downplay our faults, even fib on surveys. A new study sheds light on why we don't tell the strict truth about ourselves in surveys and what, if anything, can be done about it. |
| Watching Venus Glow In The Dark Posted: 25 Feb 2009 05:00 AM PST ESA's Venus Express spacecraft has observed an eerie glow in the night-time atmosphere of Venus. This infrared light comes from nitric oxide and is showing scientists that the atmosphere of Earth's nearest neighbour is a temperamental place of high winds and turbulence. |
| Posted: 25 Feb 2009 05:00 AM PST A small protein detectable in urine can predict a breast cancer's aggressiveness, and possibly provide a new avenue for treating the disease. When its production is shut down, cell migration -- a key step in progression and metastasis -- is inhibited. The protein, which has been licensed for clinical development, also plays a key biological role in advancing cancer, triggering the epithelial-to-mesenchymal transition and reducing cells' response to the hormone estrogen. |
| Carotenoids Are Cornerstone Of Bird's Vitality Posted: 25 Feb 2009 05:00 AM PST "What you see is what you get" often is the mantra in the highly competitive life of birds, as they use brilliant displays of color to woo females for mating. Now researchers are finding that carotenoids -- the compounds responsible for amping up red, orange and yellow colors of birds -- also may play a role in color perception and in a bird's ability to reproduce, making it a cornerstone in birds' vitality. |
| Laser Treatment Of Brain Cells Does Not Significantly Reduce Stroke Disability, Study Shows Posted: 25 Feb 2009 05:00 AM PST Low-radiation infrared laser therapy failed to significantly reduce stroke disability in a clinical trial. Patients with mild stroke did have improvement in neurological deficits after laser therapy. |
| Molecular Motors In Cells Work Together, Study Shows Posted: 25 Feb 2009 05:00 AM PST Molecular motors, the little engines that power cell mobility and the ability of cells to transport internal cargo, work together and in close coordination, according to a new findings. The work could have implications for the treatment of neurodegenerative disorders. |
| Skin Diseases Among Military Personnel Who Were Evacuated From Combat Zones Posted: 25 Feb 2009 05:00 AM PST Dermatitis, benign moles, hives and cancerous skin lesions are among the most common diagnoses among military personnel who were evacuated from combat zones for ill-defined dermatologic diseases, according to a new report. |
| Researchers Generate Functional Neurons From Engineered Stem Cells Posted: 25 Feb 2009 02:00 AM PST Researchers have generated functionally mature motor neurons from induced pluripotent stem cells, which are engineered from adult somatic cells and can differentiate into most other cell types. |
| Posted: 25 Feb 2009 02:00 AM PST Reducing the frequency and severity of disabling migraines is crucial for quality of life. A new study finds significant improvement of migraine following catheter-based closure of patent foramen ovale -- a slight opening in the wall between the right and left atria. |
| When Fish Farms Are Built Along The Coast, Where Does The Waste Go? Posted: 25 Feb 2009 02:00 AM PST Commercial fish pens are placed in the open waters of oceans and bays with no reliable method of predicting where the waste plume will be carried by winds, currents and tides. This can lead to damage to fragile coastline environments. As state and federal regulators begin to draw up rules for fish pens, a new fluid dynamics modeling system can provide answers. |
| Behavioral Link Between Insomnia And Tension-type Headaches Posted: 25 Feb 2009 02:00 AM PST Using sleep or napping to cope with chronic pain caused by tension-type headaches could lead to chronic insomnia according to a new study. The study found that napping to relieve headache pain could serve as a behavioral link between headache and sleep disturbance. |
| Greenland And Antarctic Ice Sheet Melting, Rate Unknown Posted: 25 Feb 2009 02:00 AM PST The Greenland and Antarctica ice sheets are melting, but the amounts that will melt and the time it will take are still unknown, according to researchers. |
| An Angry Heart Can Lead To Sudden Death Posted: 25 Feb 2009 02:00 AM PST Before flying off the handle the next time someone cuts you off in traffic, consider the latest research that links changes brought on by anger or other strong emotions to future arrhythmias and sudden cardiac arrests, which are blamed for 400,000 deaths annually. New research finds that anger-induced electrical changes in the heart can predict future arrhythmias in patients with implantable cardioverter-defibrillators. |
| Cassiopeia A Supernova Remnant Is Now 'Dust Factory' Around Dead Star Posted: 24 Feb 2009 11:00 PM PST Astronomers have found some very unusual stardust. They discovered new evidence for the production of copious quantities of dust in the Cassiopeia A supernova remnant, the remains of a star that exploded about 300 years ago. |
| Indicator Found That Warns Leukemia Is Progressing To More Dangerous Form Posted: 24 Feb 2009 11:00 PM PST Scientists have identified a mechanism by which a chronic form of leukemia can progress into a deadlier stage of the disease. The findings may provide physicians with an indicator of when this type of cancer -- chronic myeloid leukemia -- is progressing, enabling them to make more accurate prognoses for the disease and improved treatment choices. |
| What Biology And Evolution Can Teach Us About Our Safety: Tribute To Darwin Posted: 24 Feb 2009 11:00 PM PST When it comes to our own security, says one behavioral ecologist, there is much we can learn from biology and evolution. Speaking at a symposium paying tribute to Charles Darwin a day after the 200th anniversary of his birth, Daniel T. Blumstein shared lessons and insights from Darwin that can be applied to our own safety -- from using ATMs in unsafe neighborhoods to dealing with terrorist threats. |
| Mechanisms That Prevent Alzheimer's Disease: Enzymatic Activity Plays Key Role Posted: 24 Feb 2009 11:00 PM PST Scientists have been gaining further insight in the functioning of endogenous mechanisms that protect against the development of Alzheimer's disease. It was found that the activity of the enzyme α-secretase is mainly responsible for the protective effect. |
| Mathematician Contends Earlier Study Overstated Validity Of Findings On Risks Of Bisphenol A Posted: 24 Feb 2009 11:00 PM PST A mathematician presents the statistical limitations of a study claiming that bisphenol A is associated with cardiovascular diagnoses, diabetes and abnormal blood level liver enzyme levels that was published in an earlier study. |
| Health Insurance Essential For Health And Well-being, Report Says Posted: 24 Feb 2009 11:00 PM PST The evidence shows more clearly than ever that having health insurance is essential for people's health and well-being, according to a new report from the Institute of Medicine. |
| Gravitational Lensing: Astronomers Harness Einstein’s Telescope Posted: 24 Feb 2009 08:00 PM PST Scientists are harnessing the cosmos as a scientific "instrument" in their quest to determine the makeup of the universe. Long ago Einstein recognized the potential existence of gravitational lensing, a consequence of his theory of general relativity. According to general relativity, celestial objects create dimples in space-time that bend the light traveling from behind. |
| Brain Cells' Hidden Differences Linked To Potential Cancer Risk Posted: 24 Feb 2009 08:00 PM PST Brain cells long lumped into the same category have hidden differences that may contribute to the formation of tumors, according to a new study. |
| Posted: 24 Feb 2009 08:00 PM PST Scientists have managed to program clones that imitate the actions of humans playing soccer (known as football in the U.K.) on a computer. The clones learn the players' behavior and apply this knowledge in order to avoid their opponents and score goals. |
| Iron Overload: An Important Co-factor In The Development Of Liver Disease In Alcoholics Posted: 24 Feb 2009 08:00 PM PST Heavy drinking is associated with iron overload. A research group in Portugal found an association between HFE mutations/iron overload and alcoholic liver disease. |
| Global Warning: Hotter Days, Increased Hospitalizations For Respiratory Problems Posted: 24 Feb 2009 08:00 PM PST High summer temperatures, pushed higher by global climate change, may bring with them a spike in hospitalizations for respiratory problems, according to an analysis of data from twelve European cities, from Dublin to Valencia. The data comes from a three-year collaboration between epidemiologists, meteorologists and experts in public health collaboration that investigated the short-term effects of weather in Europe. |
| Female Genital Mutilation Among Israel's Negev Bedouins Has Virtually Disappeared, Study Suggests Posted: 24 Feb 2009 08:00 PM PST A follow-up study has determined that the once prevalent custom of female genital mutilation among Israel's Bedouin population in the Negev has virtually disappeared. The findings were reported in the Journal of Sexual Medicine. |
| Why Hair Turns Gray Is No Longer A Gray Area: Our Hair Bleaches Itself As We Grow Older Posted: 24 Feb 2009 05:00 PM PST Wash away your gray? Maybe. Scientists have now solved a mystery that has perplexed humans throughout the ages: why we turn gray. These researchers show that going gray is caused by a massive build up of hydrogen peroxide due to wear and tear of our hair follicles. The peroxide winds up blocking the normal synthesis of melanin, our hair's natural pigment. |
| Human Stem Cells Provide A New Model For Lou Gehrig's Disease Posted: 24 Feb 2009 05:00 PM PST Human stem cells are used to create motor neurons that carry familial ALS mutations. These human stem cell-derived neurons look and act like normal motor neurons, and, when carrying ALS mutations, the cells undergo changes similar to those seen in ALS. This study presents a new human-derived cell system to use in studying ALS and ALS therapies. |
| Sprightly Explanation For UFO Sightings? Posted: 24 Feb 2009 05:00 PM PST In legend, sprites are trolls, elves and other spirits that dance high above our ozone layer. But scientists have discovered that some very real "sprites" are zipping across the atmosphere as well, providing a possible explanation for those other legendary denizens of the skies, UFOs. |
| Working On A Vaccine For The Plague Posted: 24 Feb 2009 05:00 PM PST Scientists have proposed brown Norway rats as a new model for plague vaccine development. |
| Patience Pays Off With Methanol For Uranium Bioremediation Posted: 24 Feb 2009 05:00 PM PST Uranium contamination is a devastating legacy of nuclear weapon and energy development, but new testing has shown that adding organic molecules can positively affect the bioremediation of this uranium, converting it to a solid mineral and sequestering it within the sediment. |
| Do Experiences Or Material Goods Make Us Happier? Posted: 24 Feb 2009 05:00 PM PST Should I spend money on a vacation or a new computer? Will an experience or an object make me happier? A new study says it depends on different factors, including how materialistic you are. |
| Turbulence May Promote Birth Of Massive Stars Posted: 24 Feb 2009 02:00 PM PST When it comes to the theory of how massive stars form, the devil is in the details. We know the basics: a cloud of cosmic gas draws itself together, growing denser and hotter until nuclear fusion ignites. But how does massive star formation begin? What determines how many stars form from a single cloud? New data from the Submillimeter Array is helping to answer these questions. |
| Healing Arthritis Caused By Traumatic Injury Posted: 24 Feb 2009 02:00 PM PST A strain of laboratory mice that has "superhealing" powers has been found to resist inflammation after a knee injury, and also to avoid developing arthritis at the injury site in the long term, according to researchers. Their findings illuminate the mechanisms of post-traumatic arthritis and could point to therapies for this condition, which commonly afflicts younger people who lose productivity during their prime working years. |
| Don't Touch That Dial! Watching Commercials Leads To Greater Enjoyment Of TV Programs Posted: 24 Feb 2009 02:00 PM PST We all complain about commercials, and many people invest in technology to eliminate them. But a surprising new study shows that, contrary to popular belief, commercials improve television viewing in many cases. |
| Lowering Your Cholesterol May Decrease Your Risk Of Cancer Posted: 24 Feb 2009 02:00 PM PST Current research suggests that lowering cholesterol may block the growth of prostate tumors. |
| First Step Towards A World Reclassification Of Viruses Posted: 24 Feb 2009 02:00 PM PST Scientist have discovered the structure of a biological protein from the vaccinia virus. This is a significant step towards unlocking effective therapies to treat viruses. |
| Beware The Left-digit Effect: Price Gimmicks May Affect Choice Posted: 24 Feb 2009 02:00 PM PST When shopping, we often find ourselves choosing between lower- and higher-cost items. But most people make a choice based on the first digit they see, according to a new study. |
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