ScienceDaily Top Science Headlines -- for Monday, March 5, 2012

ScienceDaily Top Science Headlines

for Monday, March 5, 2012

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Sleepy pilots, train operators and drivers (March 4, 2012) -- The people we trust to take us or our loved ones from place to place struggle with sleep, according to an new poll. It is the first poll to ask transportation professionals, including pilots, train operators, truck, bus, taxi and limo drivers about their sleep habits and work performance. ... > full story

Study shows brain flexibility, gives hope for natural-feeling neuroprosthetics (March 4, 2012) -- A new study that shows more flexibility in the brain than previously thought could be a major boost to the development of mind-controlled neuroprosthetic devices that feel natural. ... > full story

Oxygen detected in atmosphere of Saturn's moon Dione: Discovery could mean ingredients for life are abundant on icy space bodies (March 2, 2012) -- An international research team has discovered molecular oxygen ions (O2+) in the upper-most atmosphere of Dione, one of the 62 known moons orbiting the ringed planet. The research was made possible via instruments aboard NASA's Cassini spacecraft. ... > full story

The future of plant science: A technology perspective (March 2, 2012) -- Plant science is key to addressing the major challenges facing humanity in the 21st Century, according to experts. Researchers argue that the development of new technology is key to transforming plant biology in order to meet human needs. ... > full story

Unexpected crustacean diversity discovered in northern freshwater ecosystems (March 2, 2012) -- Freshwater ecosystems in northern regions are home to significantly more species of water fleas than traditionally thought, adding to evidence that regions with vanishing waters contain unique animal life. ... > full story

Exploding stars: Important clue uncovered for origins of Type Ia supernovae (March 2, 2012) -- The origin of an important type of exploding stars -- Type Ia supernovae -- have now been discovered. Studying supernovae of this type helps researchers measure galaxy distances and can lead to important astronomical discoveries. ... > full story

When our eyes serve our stomach (March 2, 2012) -- Our senses aren't just delivering a strict view of what's going on in the world; they're affected by what's going on in our heads. A new study finds that hungry people see food-related words more clearly than people who've just eaten. ... > full story

Gasoline worse than diesel when it comes to some types of air pollution (March 2, 2012) -- The exhaust fumes from gasoline vehicles contribute more to the production of a specific type of air pollution-secondary organic aerosols -than those from diesel vehicles, according to a new study. ... > full story

Squeezing silicone polymers produces chemical energy, but raises doubts about implant safety (March 2, 2012) -- Scientists turned to squeezed polymers and free radicals in a search for new energy sources. They found both promise and problems. The researchers demonstrated that radicals from compressed polymers generate significant amounts of energy that can power chemical reactions in water. They also discovered that a silicone polymer commonly used in medical implants releases a large quantity of harmful free radicals when the polymer is under only a moderate amount of pressure. ... > full story

Helping protect vulnerable birds from impacts of climate change (March 2, 2012) -- Scientists have completed an innovative study of the effects of climate change on bird species of greatest concern. This novel study prioritizes which birds are most at risk and will help guide conservation measures in California. Endangered species and wetland birds are two highly vulnerable groups. ... > full story

Atomic view of a histone chaperone (March 2, 2012) -- Researchers have gained insights into the function of a member of a family of specialized proteins called histone chaperones. Using nuclear magnetic resonance (NMR) spectroscopy and X-ray crystallography, they have determined the 3-D structure and interactions of the histone chaperone Rtt106 down to the atomic details. ... > full story

Anthropologists’ work prompts Republic of Congo to enlarge National Park (March 2, 2012) -- Research by anthropologists has spurred the Republic of Congo to enlarge its Nouabalé-Ndoki National Park boundaries to include the Goualougo Triangle. The Goualougo Triangle is a remote, pristine forest that is home to at least 14 communities of “naïve” chimpanzees with little exposure to humans. ... > full story

Law that regulates shark fishery is too liberal, experts say (March 2, 2012) -- Shark fins are worth more than other parts of the shark and are often removed from the body, which gets thrown back into the sea. To curtail this wasteful practice, many countries allow the fins to be landed detached from shark bodies, as long as their weight does not exceed five per cent of the total shark catch. New research shows that this kind of legislation is too liberal. ... > full story

New computers respond to students' emotions, boredom (March 2, 2012) -- Emotion-sensing computer software that models and responds to students' cognitive and emotional states -- including frustration and boredom -- has now been developed. ... > full story

Studies reveal structure of EV71, a virus causing childhood illnesses (March 2, 2012) -- Researchers have discovered critical new details about the structure of a virus (enterovirus 71) that causes potentially fatal brain swelling and paralysis in children, pointing toward designs for antiviral drugs to treat the disease. ... > full story

World's best measurement of W boson mass points to Higgs mass and tests Standard Model (March 2, 2012) -- The latest measurement of the mass of the W boson from the Tevatron experiments. The new combined result is twice as precise as the previous world average, and places limits on the mass of the Higgs consistent with the limits from direct searches at the LHC and Tevatron. ... > full story

Lifestyle choices made in your 20s can impact your heart health in your 40s (March 2, 2012) -- Maintaining a healthy lifestyle from young adulthood into your 40s is strongly associated with low cardiovascular disease risk in middle age, according to a new study. ... > full story

Reduction of violence between expectant parents makes stronger parents (March 2, 2012) -- Couples who are married or living together will probably have more trouble parenting as a team if they have been violent toward one another during pregnancy, according to a team of psychologists. ... > full story

Holding a mirror to brain changes in autism (March 2, 2012) -- Impaired social function is a cardinal symptom of autism spectrum disorders (ASDs).  One of the brain circuits that enable us to relate to other people is the “mirror neuron” system. This brain circuit is activated when we watch other people, and allows our brains to represent the actions of others, influencing our ability to learn new tasks and to understand the intentions and experiences of other people. This mirror neuron system is impaired in individuals with ASD and better understanding the neurobiology of this system could help in the development of new treatments. ... > full story

Cocoa may enhance skeletal muscle function (March 2, 2012) -- A small clinical trial found that patients with advanced heart failure and type 2 diabetes showed improved mitochondrial structure after three months of treatment with epicatechin-enriched cocoa. Epicatechin is a flavonoid found in dark chocolate. ... > full story

Effects of environmental toxicants reach down through generations (March 2, 2012) -- Scientists have now demonstrated that a variety of environmental toxicants can have negative effects on not just an exposed animal but the next three generations of its offspring. The animal's DNA sequence remains unchanged, but the compounds change the way genes turn on and off -- the epigenetic effect, according to molecular biologists. The researchers saw females reaching puberty earlier, increased rates in the decay and death of sperm cells and lower numbers of ovarian follicles that later become eggs. ... > full story

Solved: Mystery of the nanoscale crop circles (March 2, 2012) -- A useful alloy of gold and silicon, called a eutectic, melts at a far lower temperature than either of its components. Until now, however, its odd behavior on the nanoscale has confounded researchers. By analyzing peculiar "nanoscale crop circles" formed from ultra-thin layers of gold on silicon, scientists have discovered the eutectic alloy's unique properties, including its special promise for engineering and processing nanoscale materials. ... > full story

Tortoise and the hare: New drug stops rushing cancer cells, slow and steady healthy cells unharmed (March 2, 2012) -- The American Cancer Society estimates that 44,000 new cases of pancreatic cancer will be diagnosed this year and that 37,000 people will die from the disease. These are not strong odds. A new drug, rigosertib, allows pancreatic cancer cells to rush through replication -- and then stops them cold, killing them in in the middle of a step called M phase. Healthy cells that don't rush are unharmed. ... > full story

R-loops break down gene silencing (March 2, 2012) -- Researchers have figured out how the human body keeps essential genes switched "on" and silences the vast stretches of genetic repeats and "junk" DNA. ... > full story

Protecting living fossil trees (March 2, 2012) -- Scientists are working to protect living fossil trees in Fiji from the impact of climate change with cutting-edge DNA sequencing technology. ... > full story

Nearby chimpanzee populations show much greater genetic diversity than distant human populations (March 2, 2012) -- Chimpanzee populations living in relatively close proximity are substantially more different genetically than humans living on different continents, according to a new study. The study suggests that genomics can provide a valuable new tool for use in chimpanzee conservation, with the potential to identify the population of origin of an individual chimpanzee or the provenance of a sample of bush meat. ... > full story

Artificial 'womb' unlocks secrets of early embryo development (March 2, 2012) -- Pioneering work has helped reveal for the first time a vital process in the development of the early mammalian embryo. ... > full story

When one side does not know about the other one: Specialization and cooperation of the brain hemispheres (March 2, 2012) -- Whenever we are doing something, one of our brain hemispheres is more active than the other one. However, some tasks are only solvable with both sides working together. Researchers are investigating, how such specializations and co-operations arise. Based on a pigeon-model, they are showing for the first time in an experimental way, that the ability to combine complex impressions from both hemispheres, depends on environmental factors in the embryonic stage. ... > full story

Drugs: 'New' does not always mean 'better' (March 2, 2012) -- Cases in which a newly approved drug is more effective than the cheaper alternatives already available are the exceptions rather than the rule. ... > full story

Parkinson's disease stopped in animal model: Molecular 'tweezers' break up toxic aggregations of proteins (March 2, 2012) -- Researchers have used specific molecular “tweezers” they developed to break-up aggregates of toxic proteins that are thought to cause Parkinson’s disease. For the first time, they stopped progression of the disease in a living animal model. ... > full story

Dark matter core, left behind from wreck between massive clusters of galaxies, defies explanation (March 2, 2012) -- Astronomers using data from NASA's Hubble Telescope have observed what appears to be a clump of dark matter left behind from a wreck between massive clusters of galaxies. The result could challenge current theories about dark matter that predict galaxies should be anchored to the invisible substance even during the shock of a collision. ... > full story

New high definition fiber tracking reveals damage caused by traumatic brain injury (March 2, 2012) -- A powerful new imaging technique called High Definition Fiber Tracking will allow doctors to clearly see for the first time neural connections broken by traumatic brain injury and other disorders, much like X-rays show a fractured bone, according to researchers. HDFT could provide an objective way of identifying brain injury, predicting outcome and planning rehabilitation. ... > full story

How the body senses a range of hot temperatures (March 2, 2012) -- The winter sun feels welcome, but not so a summer sunburn. Research over the past 20 years has shown that proteins on the surface of nerve cells enable the body to sense several different temperatures. ... > full story

Fukushima one year on: poor planning hampered Fukushima response (March 2, 2012) -- One year after  an earthquake and tsunami hit Japan on March 11, 2011, an independent investigation panel has highlighted the country’s failures in disaster planning and crisis management for the accident at the Fukushima Daiichi Nuclear Power Station. The article shows that agencies were thoroughly unprepared for the cascading nuclear disaster, following a tsunami that should have been anticipated. ... > full story

Pasta-shaped radio waves beamed across Venice (March 2, 2012) -- A group of Italian and Swedish researchers appears to have solved the problem of radio congestion by cleverly twisting radio waves into the shape of fusilli pasta, allowing a potentially infinite number of channels to be broadcast and received. ... > full story

Diabetes risk from sitting around (March 2, 2012) -- A new study has found that women who stay seated for long periods of time every day are more prone to developing type 2 diabetes, but that a similar link wasn't found in men. ... > full story

A healthy teenager is a happy teenager (March 2, 2012) -- Teenagers who turn their backs on a healthy lifestyle and turn to drink, cigarettes and junk food are significantly unhappier than their healthier peers. New research also shows that 12-13 is a catalyst age when young people turn away from the healthy habits of their younger years and start to get involved in risky behaviors. ... > full story

New antibiotics? Solving mystery of how sulfa drugs kill bacteria yields 21st century drug development target (March 2, 2012) -- Scientists have discovered a key enzyme structure in bacteria, a finding that lays the foundation for a new generation of antibiotics that are safer and less prone to drug resistance. ... > full story

Training can improve memory and increase brain activity in mild cognitive impairment (March 1, 2012) -- If someone has trouble remembering where the car keys or the cheese grater are, new research shows that a memory training strategy can help. Memory training can even re-engage the hippocampus, part of the brain critical for memory formation, the results suggest. The techniques used in the study were shown to work in people with mild cognitive impairment. ... > full story

A supercharged protein reduces damage from heart attack (March 1, 2012) -- Researchers have tapped into the body's own repair system to protect heart cells after an attack. In the study mice were bred to make a supercharged version of the protein focal adhesion kinase, or FAK. ... > full story

Planarian genes that control stem cell biology identified (March 1, 2012) -- Devising a novel method to identify potential genetic regulators in planarian stem cells, scientists have determined which of those genes affect the two main functions of stem cells. ... > full story

Should we play hide-and-go-seek with our children's vegetables? (March 1, 2012) -- Pass the peas please! How often do we hear our children say this? According to a recent survey of adolescents, only 21 percent of our children eat the recommended five or more fruits and vegetables per day. So not very many children are asking their parents to "pass the peas," and parents are resorting to other methods to get their children to eat their vegetables. ... > full story

First evidence of hunting by prehistoric people in what is now Ohio (March 1, 2012) -- Cut marks found on Ice Age bones indicate that humans in what is now Ohio hunted or scavenged earlier than previously known. A series of 41 incisions appear on an animal's left femur. Radiocarbon dating of the femur bone estimates its age to be between 13,435 to 13,738 years old. Microscopic analyses of the cut marks revealed that stone tools made the marks. ... > full story

New pathway found for regulation of blood vessel growth in cancer (March 1, 2012) -- Researchers have identified a new function for a gene that normally prevents the development of cancer. Scientists had known that the gene, which encodes a protein called p14 ARF, works inside the cell to control proliferation and division. A team has discovered that p14 ARF also regulates tumor-induced angiogenesis, the process by which growing cancers attract new blood vessels. ... > full story

Vitamin D shrinks fibroid tumors in rats (March 1, 2012) -- Treatment with vitamin D reduced the size of uterine fibroids in laboratory rats predisposed to developing the benign tumors, reported researchers. ... > full story

Turning off small RNA: New tool designed for breaking the epigenetic code (March 1, 2012) -- Scientists have known for years that minuscule strings of genetic material called small RNA are critically important to our genetic makeup, but finding out what they do hasn't been easy. Now scientists have developed a way to turn off small RNAs and find out just how important they can be. ... > full story

Clearer picture of how protein machine systems tweak gene expression (March 1, 2012) -- Biologists have found that specific types of RNA polymerase enzymes, the molecular machines that convert DNA into RNA, can differ in function based on variation in the parts -- in this case protein subunits -- used to assemble those machines. ... > full story

Bacteria communicate by touch, new research suggests (March 1, 2012) -- What if bacteria could talk to each other? What if they had a sense of touch? A new study suggests both, and theorizes that such cells may, in fact, need to communicate in order to perform certain functions. ... > full story