Thursday, February 28, 2013

ScienceDaily: Most Popular News

ScienceDaily: Most Popular Newshttp://www.sciencedaily.com/news/most_popular/ Most popular science, health, technology and environment news stories, featured on ScienceDaily's home page.en-usWed, 27 Feb 2013 08:34:52 ESTWed, 27 Feb 2013 08:34:52 EST60ScienceDaily: Most Popular Newshttp://www.sciencedaily.com/images/logosmall.gifhttp://www.sciencedaily.com/news/most_popular/ For more science articles, visit ScienceDaily.Ship noise makes crabs get crabbyhttp://www.sciencedaily.com/releases/2013/02/130226194012.htm A new study found that ship noise affects crab metabolism, with the largest crabs faring the worst, and found little evidence that crabs acclimatize to noise over time.Tue, 26 Feb 2013 19:40:40 ESThttp://www.sciencedaily.com/releases/2013/02/130226194012.htmSelf help books and websites can benefit severely depressed patientshttp://www.sciencedaily.com/releases/2013/02/130226194010.htm Patients with more severe depression show at least as good clinical benefit from 'low-intensity' interventions, such as self help books and websites, as less severely ill patients, suggests a new article.Tue, 26 Feb 2013 19:40:40 ESThttp://www.sciencedaily.com/releases/2013/02/130226194010.htmMuscle, skin and gastrointestinal problems cause a quarter of patients with heart disease and strokes to stop treatment in HPS2-THRIVE trialhttp://www.sciencedaily.com/releases/2013/02/130226193840.htm The largest randomized study of the vitamin niacin in patients with occlusive arterial disease (narrowing of the arteries) has shown a significant increase in adverse side-effects when it is combined with statin treatment.Tue, 26 Feb 2013 19:38:38 ESThttp://www.sciencedaily.com/releases/2013/02/130226193840.htmLinking insulin to learning: Insulin-like molecules play critical role in learning and memoryhttp://www.sciencedaily.com/releases/2013/02/130226162837.htm Though it's most often associated with disorders like diabetes, scientists have shown how the pathway of insulin and insulin-like peptides plays another critical role in the body -- helping to regulate learning and memory.Tue, 26 Feb 2013 16:28:28 ESThttp://www.sciencedaily.com/releases/2013/02/130226162837.htmLong-term use of medication does not improve symptoms for heart failure patientshttp://www.sciencedaily.com/releases/2013/02/130226162725.htm Among patients with heart failure with preserved ejection fraction, long-term treatment with the medication spironolactone improved left ventricular diastolic function but did not affect maximal exercise capacity, patient symptoms, or quality of life, according to a new study.Tue, 26 Feb 2013 16:27:27 ESThttp://www.sciencedaily.com/releases/2013/02/130226162725.htmPolice and firefighters at higher risk for mental disorders following traumatic eventshttp://www.sciencedaily.com/releases/2013/02/130226141256.htm New research suggests that exposure to diverse types of traumatic events among protective services workers is a risk factor for new onset of psychopathology and alcohol use disorders.Tue, 26 Feb 2013 14:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226141256.htmSimple method devised for determining atrial fibrillation risk in womenhttp://www.sciencedaily.com/releases/2013/02/130226141254.htm Researchers have devised and tested a simple atrial fibrillation risk prediction model, based on six easily obtained factors: A woman's age, height, weight, blood pressure, alcohol consumption and smoking history.Tue, 26 Feb 2013 14:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226141254.htmTexting Gloves Dangerous in Winter, Says experthttp://www.sciencedaily.com/releases/2013/02/130226141235.htm Fingers are one of the first body parts to suffer from the cold and popular fingerless texting gloves can lead to frostbite and in worst cases, amputation, says an expert.Tue, 26 Feb 2013 14:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226141235.htmLeatherback sea turtle could be extinct within 20 years at last stronghold in the Pacific Oceanhttp://www.sciencedaily.com/releases/2013/02/130226141233.htm An international team led by the University of Alabama at Birmingham (UAB) has documented a 78 percent decline in the number of nests of the critically endangered leatherback sea turtle (Dermochelys coriacea) at the turtle's last stronghold in the Pacific Ocean.Tue, 26 Feb 2013 14:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226141233.htmNovel combination therapy shuts down escape route, killing glioblastoma tumor cellshttp://www.sciencedaily.com/releases/2013/02/130226135525.htm Scientists have uncovered an unexpected, but important molecular mechanism of mTOR inhibitor resistance and a novel drug combination that reverses this resistance using low dose arsenic in mice. The mTOR pathway is hyperactivated in 90 percent of glioblastomas, the most lethal brain cancer in adults. The data suggest a new approach for treatment of glioblastoma.Tue, 26 Feb 2013 13:55:55 ESThttp://www.sciencedaily.com/releases/2013/02/130226135525.htmGenetic variation behind acute myeloid leukemia treatment success identifiedhttp://www.sciencedaily.com/releases/2013/02/130226135523.htm Researchers are working to identify genetic variations that may help signal which acute myeloid leukemia patients will benefit or not benefit from one of the newest antileukemic agents.Tue, 26 Feb 2013 13:55:55 ESThttp://www.sciencedaily.com/releases/2013/02/130226135523.htmEvolution and the ice agehttp://www.sciencedaily.com/releases/2013/02/130226135241.htm Scientists are discovering how the evolution of ecosystems has to be taken into account when speculating between different geological eras. Go back to the time of the dinosaurs or to the single-celled organisms at the origins of life, and it is obvious that ecosystems existing more than 65 million years ago and around four billion years ago cannot be simply surmised from those of today.Tue, 26 Feb 2013 13:52:52 ESThttp://www.sciencedaily.com/releases/2013/02/130226135241.htmPersistent negative attitude can undo effectiveness of exposure therapy for phobiashttp://www.sciencedaily.com/releases/2013/02/130226135154.htm Because confronting fear won?t always make it go away, researchers suggest that people with phobias must alter memory-driven negative attitudes about feared objects or events to achieve a more lasting recovery from what scares them the most.Tue, 26 Feb 2013 13:51:51 ESThttp://www.sciencedaily.com/releases/2013/02/130226135154.htmNotion of using herceptin only for HER2-positive breast cancer challengedhttp://www.sciencedaily.com/releases/2013/02/130226135109.htm New research finds that the protein HER2 plays a role even in breast cancers that would traditionally be categorized as HER2-negative ? and that the drug Herceptin, which targets HER2, may have an even greater role for treating breast cancer and preventing its spread.Tue, 26 Feb 2013 13:51:51 ESThttp://www.sciencedaily.com/releases/2013/02/130226135109.htmNew design could reduce complications in hip replacementhttp://www.sciencedaily.com/releases/2013/02/130226135107.htm Andrew Murtha, a second-year medical student, hopes to specialize in orthopedic medicine. A unique opportunity to collaborate with experienced researchers not only gave him a head start in his medical career, but also allowed him to develop a new design for an artificial hip that should help reduce post-operative complications.Tue, 26 Feb 2013 13:51:51 ESThttp://www.sciencedaily.com/releases/2013/02/130226135107.htmFor some, surgical site infections are in the geneshttp://www.sciencedaily.com/releases/2013/02/130226135103.htm An estimated 300,000 U.S. patients get surgical site infections every year, and while the causes are varied, a new study suggests that some who get an infection can blame it partly on their genes.Tue, 26 Feb 2013 13:51:51 ESThttp://www.sciencedaily.com/releases/2013/02/130226135103.htmResearchers test holographic technique for restoring visionhttp://www.sciencedaily.com/releases/2013/02/130226134259.htm Researchers are testing the power of holography to artificially stimulate cells in the eye, with hopes of developing a new strategy for bionic vision restoration. Computer-generated holography, they say, could be used in conjunction with a technique called optogenetics, which uses gene therapy to deliver light-sensitive proteins to damaged retinal nerve cells. In conditions such as retinitis pigmentosa (RP), these light-sensing cells degenerate and lead to blindness.Tue, 26 Feb 2013 13:42:42 ESThttp://www.sciencedaily.com/releases/2013/02/130226134259.htmEating well could help spread disease, water flea study suggestshttp://www.sciencedaily.com/releases/2013/02/130226120551.htm Plentiful food can accelerate the spread of infections, scientists have shown in a study of water fleas. Scientists studying bacterial infections in tiny water fleas have discovered that increasing their supply of food can speed up the spread of infection.Tue, 26 Feb 2013 12:05:05 ESThttp://www.sciencedaily.com/releases/2013/02/130226120551.htmNon-brittle glass possible: In probing mysteries of glass, researchers find a key to toughnesshttp://www.sciencedaily.com/releases/2013/02/130226114023.htm Glass doesn't have to be brittle. Scientists propose a way of predicting whether a given glass will be brittle or ductile -- a property typically associated with metals like steel or aluminum -- and assert that any glass could have either quality.Tue, 26 Feb 2013 11:40:40 ESThttp://www.sciencedaily.com/releases/2013/02/130226114023.htmConnecting the (quantum) dots: First viable high-speed quantum computer moves closerhttp://www.sciencedaily.com/releases/2013/02/130226114021.htm Scientists have developed a new method that better preserves the units necessary to power lightning-fast electronics, known as qubits. Hole spins, rather than electron spins, can keep quantum bits in the same physical state up to 10 times longer than before, the report finds.Tue, 26 Feb 2013 11:40:40 ESThttp://www.sciencedaily.com/releases/2013/02/130226114021.htmCell discovery could hold key to causes of inherited diseaseshttp://www.sciencedaily.com/releases/2013/02/130226113830.htm Fresh insights into the protective seal that surrounds the DNA of our cells could help develop treatments for inherited muscle, brain, bone and skin disorders. Researchers have discovered that the proteins within this coating -- known as the nuclear envelope -- vary greatly between cells in different organs of the body.Tue, 26 Feb 2013 11:38:38 ESThttp://www.sciencedaily.com/releases/2013/02/130226113830.htmClever battery completes stretchable electronics package: Can stretch, twist and bend -- and return to normal shapehttp://www.sciencedaily.com/releases/2013/02/130226113828.htm Researchers have demonstrated a stretchable lithium-ion battery -- a flexible device capable of powering their innovative stretchable electronics. The battery can stretch up to 300 percent of its original size and still function -- even when stretched, folded, twisted and mounted on a human elbow. The battery enables true integration of electronics and power into a small, stretchable package that is wirelessly rechargeable.Tue, 26 Feb 2013 11:38:38 ESThttp://www.sciencedaily.com/releases/2013/02/130226113828.htmControlling element of Huntington's disease discovered: Molecular troika regulates production of harmful proteinhttp://www.sciencedaily.com/releases/2013/02/130226113826.htm A three molecule complex may be a target for treating Huntington's disease, a genetic disorder affecting the brain.Tue, 26 Feb 2013 11:38:38 ESThttp://www.sciencedaily.com/releases/2013/02/130226113826.htmEat too much? Maybe it's in the bloodhttp://www.sciencedaily.com/releases/2013/02/130226113824.htm Bone marrow cells that produce brain-derived eurotrophic factor, known to affect regulation of food intake, travel to part of the hypothalamus in the brain where they "fine-tune" appetite, said researchers in a new article.Tue, 26 Feb 2013 11:38:38 ESThttp://www.sciencedaily.com/releases/2013/02/130226113824.htmNew tool for measuring frozen gas in ocean floor sedimentshttp://www.sciencedaily.com/releases/2013/02/130226113440.htm Scientists have developed an instrument capable of simulating the high pressures and low temperatures needed to create hydrate in sediment samples.Tue, 26 Feb 2013 11:34:34 ESThttp://www.sciencedaily.com/releases/2013/02/130226113440.htmBlood vessels 'sniff' gut microbes to regulate blood pressurehttp://www.sciencedaily.com/releases/2013/02/130226113431.htm Researchers have discovered that a specialized receptor, normally found in the nose, is also in blood vessels throughout the body, sensing small molecules created by microbes that line mammalian intestines, and responding to these molecules by increasing blood pressure.Tue, 26 Feb 2013 11:34:34 ESThttp://www.sciencedaily.com/releases/2013/02/130226113431.htmInfrared digital holography allows firefighters to see through flames, image moving peoplehttp://www.sciencedaily.com/releases/2013/02/130226101454.htm Firefighters now have a new tool that could help save lives. A team of researchers have developed a new technique using digital holography that can "see" people through intense flames -- the first time a holographic recording of a live person has been achieved while the body is moving. The new technique allows imaging through both.Tue, 26 Feb 2013 10:14:14 ESThttp://www.sciencedaily.com/releases/2013/02/130226101454.htmWomen's iron intake may help to protect against PMShttp://www.sciencedaily.com/releases/2013/02/130226101448.htm In one of the first studies to evaluate whether dietary mineral intake is associated with PMS development, medical researchers assessed mineral intake in approximately 3,000 women in a case-control study.Tue, 26 Feb 2013 10:14:14 ESThttp://www.sciencedaily.com/releases/2013/02/130226101448.htmBlueprint for an artificial brain: Scientists experiment with memristors that imitate natural nerveshttp://www.sciencedaily.com/releases/2013/02/130226101400.htm Scientists have long been dreaming about building a computer that would work like a brain. This is because a brain is far more energy-saving than a computer, it can learn by itself, and it doesn't need any programming. Scientists are experimenting with memristors -- electronic microcomponents that imitate natural nerves.Tue, 26 Feb 2013 10:14:14 ESThttp://www.sciencedaily.com/releases/2013/02/130226101400.htmTexting becoming a pain in the neckhttp://www.sciencedaily.com/releases/2013/02/130226101259.htm Orthopedic surgeon, spine specialist says excessive leaning head forward and down, while looking at a phone or other mobile device could result in what some people call ?text neck.?Tue, 26 Feb 2013 10:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226101259.htmUnlimited source of human kidney cells createdhttp://www.sciencedaily.com/releases/2013/02/130226092142.htm Researchers have successfully generated human kidney cells from human embryonic stem cells in vitro1. Specifically, they produced the renal cells under artificial conditions in the lab without using animals or organs. This has not been possible until now.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092142.htmProtein that may control the spread of cancer discoveredhttp://www.sciencedaily.com/releases/2013/02/130226092138.htm Researchers have uncovered a novel mechanism that may lead to more selective ways to stop cancer cells from spreading. Cancer biologists have identified the role of the protein RSK2 in cancer cell migration, part of the process of cancer metastasis.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092138.htmKey component of China's pollution problem: Scale of nitrogen's effect on people and ecosystems revealedhttp://www.sciencedaily.com/releases/2013/02/130226092136.htm It's no secret that China is faced with some of the world's worst pollution. Until now, however, information on the magnitude, scope and impacts of a major contributor to that pollution -- human-caused nitrogen emissions -- was lacking.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092136.htmMicroscopy technique could be key to improving cancer treatments with targeted therapeutic drugshttp://www.sciencedaily.com/releases/2013/02/130226092132.htm For scientists to improve cancer treatments with targeted therapeutic drugs, they need to be able to see proteins prevalent in the cancer cells. This has been impossible, until now. Thanks to a new microscopy technique, medical researchers have now observed how clusters of epidermal growth factor receptor (EGFR) -- a protein abundant in lung and colon cancers, glioblastoma and others -- malfunctions in cancer cells.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092132.htmSuperbugs may have a soft spot, after allhttp://www.sciencedaily.com/releases/2013/02/130226092130.htm The overuse of antibiotics has created strains of bacteria resistant to medication, making the diseases they cause difficult to treat, or even deadly. But now a research team has identified a weakness in at least one superbug that scientists may be able to medically exploit.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092130.htmNewly observed properties of vacuums: Light particles illuminate the vacuumhttp://www.sciencedaily.com/releases/2013/02/130226092128.htm Researchers have succeeded in showing experimentally that vacuums have properties not previously observed. According to the laws of quantum mechanics, it is a state with abundant potentials. Vacuums contain momentarily appearing and disappearing virtual pairs, which can be converted into detectable light particles.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092128.htm'Fat worms' inch scientists toward better biofuel productionhttp://www.sciencedaily.com/releases/2013/02/130226092126.htm Fat worms confirm that researchers have successfully engineered a plant with oily leaves -- a feat that could enhance biofuel production as well as lead to improved animal feeds.Tue, 26 Feb 2013 09:21:21 ESThttp://www.sciencedaily.com/releases/2013/02/130226092126.htmTaking omega-3 supplements may help prevent skin cancer, new study findshttp://www.sciencedaily.com/releases/2013/02/130226092002.htm Taking omega-3 fish oils could help to protect against skin cancer, according to new research. Scientists just carried out the first clinical trial to examine the impact of the fish oils on the skin immunity of volunteers.Tue, 26 Feb 2013 09:20:20 ESThttp://www.sciencedaily.com/releases/2013/02/130226092002.htmPTSD symptoms common among ICU survivorshttp://www.sciencedaily.com/releases/2013/02/130226081238.htm One in three people who survived stays in an intensive care unit and required use of a mechanical ventilator showed substantial post-traumatic stress disorder symptoms that lasted for up to two years, according to a new study of patients with acute lung injury.Tue, 26 Feb 2013 08:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226081238.htmBariatric surgery restores pancreatic function by targeting belly fathttp://www.sciencedaily.com/releases/2013/02/130226081236.htm Researchers have found that gastric bypass surgery reverses diabetes by uniquely restoring pancreatic function in moderately obese patients with uncontrolled type 2 diabetes.Tue, 26 Feb 2013 08:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226081236.htmNow hear this: Forerunners of inner-ear cells that enable hearing identifiedhttp://www.sciencedaily.com/releases/2013/02/130226081234.htm Researchers have identified a group of progenitor cells in the inner ear that can become the sensory hair cells and adjacent supporting cells that enable hearing.Tue, 26 Feb 2013 08:12:12 ESThttp://www.sciencedaily.com/releases/2013/02/130226081234.htmProtecting fish from antidepressants by using new wastewater treatment techniquehttp://www.sciencedaily.com/releases/2013/02/130226081157.htm Researchers have developed a new technique to prevent pharmaceutical residues from entering waterways and harming wildlife.Tue, 26 Feb 2013 08:11:11 ESThttp://www.sciencedaily.com/releases/2013/02/130226081157.htmSleep reinforces learning: Children?s brains transform subconsciously learned material into active knowledgehttp://www.sciencedaily.com/releases/2013/02/130226081155.htm During sleep, our brains store what we have learned during the day a process even more effective in children than in adults, new research shows.Tue, 26 Feb 2013 08:11:11 ESThttp://www.sciencedaily.com/releases/2013/02/130226081155.htmWhen morning sickness lasts all dayhttp://www.sciencedaily.com/releases/2013/02/130226081023.htm Severe nausea during pregnancy can be fatal, yet very little is known about this condition. Hormonal, genetic and socio-economic factors may all play a role.Tue, 26 Feb 2013 08:10:10 ESThttp://www.sciencedaily.com/releases/2013/02/130226081023.htmPain can be a reliefhttp://www.sciencedaily.com/releases/2013/02/130226081021.htm When something causes less pain than expected it is even possible for it to feel pleasant, a new study reveals. These findings may one day play a key role in treating pain and substance abuse.Tue, 26 Feb 2013 08:10:10 ESThttp://www.sciencedaily.com/releases/2013/02/130226081021.htmSweet news for stem cell's 'Holy Grail'http://www.sciencedaily.com/releases/2013/02/130226081014.htm Scientists have used sugar-coated scaffolding to move a step closer to the routine use of stem cells in the clinic and unlock their huge potential to cure diseases from Alzheimer?s to diabetes.Tue, 26 Feb 2013 08:10:10 ESThttp://www.sciencedaily.com/releases/2013/02/130226081014.htm3-D atlas of the human heart drawn using statisticshttp://www.sciencedaily.com/releases/2013/02/130226081010.htm Researchers in Spain have created a high resolution atlas of the heart with 3-D images taken from 138 people. The study demonstrates that an average image of an organ along with its variations can be obtained for the purposes of comparing individual cases and differentiating healthy forms from pathologies.Tue, 26 Feb 2013 08:10:10 ESThttp://www.sciencedaily.com/releases/2013/02/130226081010.htmWindmills at sea can break like matcheshttp://www.sciencedaily.com/releases/2013/02/130226081005.htm Medium-sized waves can break wind turbines at sea like matches. These waves occur even in small storms, which are quite common in the Norwegian Sea.Tue, 26 Feb 2013 08:10:10 ESThttp://www.sciencedaily.com/releases/2013/02/130226081005.htmCortisone can increase risk of acute pancreatitishttp://www.sciencedaily.com/releases/2013/02/130225210321.htm A new study shows that cortisone -- a hormone used in certain medicines -- increases the risk of acute pancreatitis. According to the researchers, they suggest that patients treated with cortisone in some forms should be informed of the risks and advised to refrain from alcohol and smoking.Mon, 25 Feb 2013 21:03:03 ESThttp://www.sciencedaily.com/releases/2013/02/130225210321.htmPregnant mother's blood pressure may affect future health of childrenhttp://www.sciencedaily.com/releases/2013/02/130225201930.htm Up to 10 percent of all women experience some form of elevated blood pressure during pregnancy. Researchers now show that mild maternal hypertension early in pregnancy actually benefits the fetus, but that late pregnancy hypertension has negative health consequences for the child.Mon, 25 Feb 2013 20:19:19 ESThttp://www.sciencedaily.com/releases/2013/02/130225201930.htmSmall molecules in the blood might gauge radiation effects after exposurehttp://www.sciencedaily.com/releases/2013/02/130225201928.htm Researchers have identified molecules in the blood that might gauge the likelihood of radiation illness after exposure to ionizing radiation. The animal study shows that radiation predictably alters levels of certain molecules in the blood. If verified in human subjects, the findings could lead to new methods for rapidly identifying people at risk for acute radiation syndrome after occupational exposures or nuclear reactor accidents, and they might help doctors plan radiation therapy for patients.Mon, 25 Feb 2013 20:19:19 ESThttp://www.sciencedaily.com/releases/2013/02/130225201928.htmWasp transcriptome creates a buzzhttp://www.sciencedaily.com/releases/2013/02/130225201823.htm New research delivers a sting in the tail for queen wasps.? Scientists have sequenced the active parts of the genome ? or transcriptome ? of primitively eusocial wasps to identify the part of the genome that makes you a queen or a worker. Their work shows that workers have a more active transcriptome than queens. This suggests that in these simple societies, workers may be the 'jack-of-all-trades' in the colony - transcriptionally speaking - leaving the queen with a somewhat restricted repertoire.Mon, 25 Feb 2013 20:18:18 ESThttp://www.sciencedaily.com/releases/2013/02/130225201823.htmCell scaffolding protein fascin-1 is hijacked by cancerhttp://www.sciencedaily.com/releases/2013/02/130225201820.htm A protein involved in the internal cell scaffold is associated with increased risk of metastasis and mortality in a range of common cancers finds a meta-analysis. The protein, fascin-1, is involved in bundling together the actin filaments which form the internal scaffolding of a cell and are involved in cell movement.Mon, 25 Feb 2013 20:18:18 ESThttp://www.sciencedaily.com/releases/2013/02/130225201820.htmNew clot removal devices show promise for treating stroke patientshttp://www.sciencedaily.com/releases/2013/02/130225201809.htm Specialists are treating patients with a new generation of blood clot removal devices that show promise in successfully revascularizing stroke patients, including those with large vessel blockages. The Solitaire Flow Restoration Device and the Trevo device, approved by Food and Drug Administration (FDA) in 2012 to treat stroke caused by the sudden obstruction of a brain blood vessel (acute ischemic stroke) showed improved results over a previous standard and first generation clot-removal device in clinical trials.Mon, 25 Feb 2013 20:18:18 ESThttp://www.sciencedaily.com/releases/2013/02/130225201809.htmLab instruments inside Curiosity eat Mars rock powderhttp://www.sciencedaily.com/releases/2013/02/130225185603.htm Two compact laboratories inside NASA's Mars rover Curiosity have ingested portions of the first sample of rock powder ever collected from the interior of a rock on Mars. Curiosity science team members will use the laboratories to analyze the rock powder in the coming days and weeks.Mon, 25 Feb 2013 18:56:56 ESThttp://www.sciencedaily.com/releases/2013/02/130225185603.htmMediterranean diet helps cut risk of heart attack, stroke: Results of PREDIMED study presentedhttp://www.sciencedaily.com/releases/2013/02/130225181536.htm Results of a major study aimed at assessing the efficacy of the Mediterranean diet in the primary prevention of cardiovascular diseases show that such a diet supplemented with extra-virgin olive oil or tree nuts reduces by 30 percent the risk of suffering a cardiovascular death, a myocardial infarction or a stroke.Mon, 25 Feb 2013 18:15:15 ESThttp://www.sciencedaily.com/releases/2013/02/130225181536.htmHigher levels of several toxic metals found in children with autismhttp://www.sciencedaily.com/releases/2013/02/130225162231.htm Researchers have found significantly higher levels of toxic metals in children with autism, compared to typical children. They hypothesize that reducing early exposure to toxic metals may help lessen symptoms of autism, though they say this hypotheses needs further examination.Mon, 25 Feb 2013 16:22:22 ESThttp://www.sciencedaily.com/releases/2013/02/130225162231.htmDoing good is good for you: Volunteer adolescents enjoy healthier heartshttp://www.sciencedaily.com/releases/2013/02/130225162229.htm Giving back through volunteering is good for your heart, even at a young age, according to researchers.Mon, 25 Feb 2013 16:22:22 ESThttp://www.sciencedaily.com/releases/2013/02/130225162229.htmVirus shows promise as prostate cancer treatmenthttp://www.sciencedaily.com/releases/2013/02/130225153141.htm A recombinant Newcastle disease virus kills all kinds of prostate cancer cells, including hormone resistant cells, but leaves normal cells unscathed, according to a new article. A treatment for prostate cancer based on this virus would avoid the adverse side effects typically associated with hormonal treatment for prostate cancer, as well as those associated with cancer chemotherapies generally.Mon, 25 Feb 2013 15:31:31 ESThttp://www.sciencedaily.com/releases/2013/02/130225153141.htmHummingbird flight: Two vortex trails with one strokehttp://www.sciencedaily.com/releases/2013/02/130225153139.htm As of today, the Wikipedia entry for the hummingbird explains that the bird's flight generates in its wake a single trail of vortices that helps the bird hover. But after conducting experiments with hummingbirds in the lab, researchers propose that the hummingbird produces two trails of vortices -- one under each wing per stroke -- that help generate the aerodynamic forces required for the bird to power and control its flight.Mon, 25 Feb 2013 15:31:31 ESThttp://www.sciencedaily.com/releases/2013/02/130225153139.htm

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