|  Ytterbium atomic clocks set record for stability  | A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology has set a new record for stability. The clocks act like 21st-century pendulums or metronomes that could swing back and forth with perfect timing for a period comparable to the age of the universe. | Read More » Computer simulations indicate calcium carbonate has a dense liquid phase  | Computer simulations could help scientists make sense of a recently observed and puzzling wrinkle in one of nature's most important chemical processes. It turns out that calcium carbonate -- the ubiquitous compound that is a major component of seashells, limestone, concrete, antacids and myriad other substances -- may momentarily exist in liquid form as it crystallizes from solution. Calcium carbonate is a huge player in the planet's carbon cycle, so any new insight into how it behaves is potentially big news. | Read More » Fecal microbiota transplantation as effective treatment for C. difficile and other diseases  | Fecal microbiota transplantation has emerged as a highly effective treatment for recurrent Clostridium difficile infection, with very early experience suggesting that it may also play a role in treating other gastrointestinal (GI) and non-GI diseases. | Read More » Cells that line blood vessels created  | In a scientific first, scientists have successfully grown the cells that line the blood vessels -- called vascular endothelial cells -- from human induced pluripotent stem cells, revealing new details about how these cells function. | Read More » Toxic nanoparticles might be entering human food supply  | Farmers have used silver nanoparticles as a pesticide because of their capability to suppress the growth of harmful organisms. However, a growing concern is that these particles could pose a potential health risk to humans and the environment. In a new study, researchers have developed a reliable method for detecting silver nanoparticles in fresh produce and other food products. | Read More » Cell phones used to measure happiness  | Researchers are developing ways to use mobile phones to explore how one's environment influences one's sense of well-being. | Read More » Art preserves skills despite onset of vascular dementia in 'remarkable' case of a Canadian sculptor  | The ability to draw spontaneously as well as from memory may be preserved in the brains of artists long after the deleterious effects of vascular dementia have diminished their capacity to complete simple, everyday tasks, according to a new study by physicians. | Read More » Go on, volunteer -- it could be good for you  | Volunteering can improve mental health and help you live longer, finds the study which pools and compares data from multiple experimental trials and longitudinal cohort studies. Some observational evidence points to around a 20 per cent reduction in mortality among volunteers compared to non-volunteers in cohort studies. Volunteers also reported lower levels of depression, increased life satisfaction and enhanced well-being, although the findings have yet to be confirmed in trials. | Read More » New molecular mechanism tied to pancreatic cancer  | New research could aid efforts to diagnose and treat one of the most lethal and hard-to-treat types of cancer. | Read More » Stroke risk similar among men and women smokers worldwide  | Smoking cigarettes may cause similar stroke risks for men and women, but women smokers may be at greater risk for a more deadly and uncommon type of stroke, according to new research. | Read More » In mild strokes, ultra-early treatment may eliminate risk of disability  | In the case of mild or moderate strokes, getting treatment ultra-fast – within 90 minutes of experiencing symptoms – greatly reduces the risk of suffering disability, according to a new study. | Read More » Single injection may revolutionize melanoma treatment  | A new study could offer hope to people with melanoma, the deadliest form of skin cancer. Researchers are investigating whether an injectable known as PV-10 can shrink tumors and reduce the spread of cancer. PV-10 is a solution developed from Rose Bengal, a water-soluble dye commonly used to stain damaged cells in the eye. Early clinical trials show PV-10 can boost immune response in melanoma tumors, as well as the blood stream. | Read More » The stress and cancer link: 'Master-switch' stress gene enables cancer's spread  | In an unexpected finding, scientists have linked the activation of a stress gene in immune-system cells to the spread of breast cancer to other parts of the body. | Read More » New risk model sheds light on arsenic risk in China's groundwater  | Arsenic-laden groundwater used for cooking and drinking could pose a risk to the health of almost 20 million people across China. The estimates are based on a risk model incorporating geological and hydrological data, as well as measurements of arsenic in wells. | Read More » Restricting food and fluids during labor is unwarranted, study suggests  | Despite the longstanding, widespread practice of restricting women's food and fluid intake during labor, a large-scale analysis finds it unwarranted and supports women eating and drinking as they please. | Read More » BMI not accurate enough: Obesity/mortality paradox demonstrates urgent need for more refined metabolic measures  | Researchers point out that the body mass index (BMI), based on the weight and height, is not an accurate measure of body fat content and does not account for critical factors that contribute to health or mortality, such as fat distribution, proportion of muscle to fat, and the sex and racial differences in body composition. | Read More » A fluffy disk around a baby star  | Astronomers have observed a disk around the young star RY Tau (Tauri). The team's analysis of the disk shows that a "fluffy" layer above it is responsible for the scattered light observed in the infrared image. Detailed comparisons with computer simulations of scattered light from the disk reveal that this layer appears to be a remnant of material from an earlier phase of stellar and disk development, when dust and gas were falling onto the disk. | Read More » Receptor may aid spread of Alzheimer's and Parkinson's in brain  | Scientists have found a way that corrupted, disease-causing proteins spread in the brain, potentially contributing to Alzheimer's disease, Parkinson's disease and other brain-damaging disorders. | Read More » Arctic sea ice update: Unlikely to break records, but continuing downward trend  | The melting of sea ice in the Arctic is well on its way toward its annual "minimum," that time when the floating ice cap covers less of the Arctic Ocean than at any other period during the year. While the ice will continue to shrink until around mid-September, it is unlikely that this year's summer low will break a new record. Still, this year's melt rates are in line with the sustained decline of the Arctic ice cover observed by NASA and other satellites over the last several decades. | Read More » Omega-3 reduces ADHD symptoms in rats  | A new multidisciplinary study shows a clear connection between the intake of omega-3 fatty acids and a decline in ADHD symptoms in rats. | Read More » Gut taste mechanisms are abnormal in diabetes sufferers  | Researchers have discovered that the way the gut "tastes" sweet food may be defective in sufferers of type 2 diabetes, leading to problems with glucose uptake. | Read More » Teen driver music preferences increase errors and distractibility  | When the teen drivers listened to their preferred music, virtually all (98 percent) demonstrated an average of three deficient driving behaviors in at least one of the trips. Nearly a third of those (32 percent) required a a sudden verbal warning or command for action, and 20 percent needed an assisted steering or braking maneuver to prevent an imminent accident. These errors included speeding, tailgating, careless lane switching, passing vehicles and one-handed driving. | Read More » One mummy – many coffins: Intended to transform deceased from human to deity  | The Egyptian elite was buried in a coffin placed inside another coffin -- in ensembles of up to eight coffins. This was intended to ensure the transformation of the deceased from human to deity, according to an Egyptologist. | Read More » Underwater intelligence: How do you track a fish underwater?  | How do you track a fish underwater? Rethinking the traditional, ad hoc approach to acoustic telemetry, scientists have proposed a new state-space model for analyzing fish movement data collected by marine observation networks. Its goal is to quantify the uncertainty associated with this imperfect locating system, and to improve its accuracy. | Read More » Higher intake of fruits and vegetables may reduce the risk of bladder cancer in women  | Scientists recently discovered that a greater consumption of fruits and vegetables may lower the risk of invasive bladder cancer in women. | Read More » Sea ice decline spurs the greening of the Arctic  | Sea ice decline and warming trends are changing the vegetation in nearby arctic coastal areas, according to scientists. | Read More » New technique to help brain cancer patients  | A new scanning technique reveals how susceptible patients with aggressive brain cancer are to the drugs they receive. | Read More » Architecture of chromosomes: A key for success or failure  | Scientists have shown for the first time that chromosomes rearrangements (such as inversions or translocations) can provide advantages to the cells that harbor them depending on the environment to which they are exposed. | Read More » Two become one with the 3-D NanoChemiscope - unique surface analysis instrument  | The 3D NanoChemiscope is a miracle of state-of-the-art analysis technology. As a further development of well-known microscopic and mass spectroscopic methods, it maps the physical and chemical surfaces of materials down to the atomic level. This instrument, which is unique in the world, not only delivers high-definition images; it also knows what it is "seeing". | Read More » Richard III's skeleton came within inches of destruction  | Archaeologists have revealed the bones of Richard III came within inches of destruction. | Read More » Drug used for blood cancers may stop spread of breast cancer cells  | A drug used to treat blood cancers may also stop the spread of invasive breast cancer, researchers have discovered. Their study found that in the lab and in animals, the drug decitabine turns on a gene coding for protein kinase D1 (PRKD1) that halts the ability of cancer cells to separate from a tumor and spread to distant organs. | Read More » | |
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