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Science News for March 11, 2013


Monsoon failure key to long droughts in Southwest

A new study led by the University of Arizona has found that monsoon failure plays a significant role in prolonged droughts in the Southwest. The researchers used tree-ring analysis to reconstruct summer precipitation patterns over a 470-year period, revealing that dry summers coincided with severe winter droughts.

SourceUniversity of Arizona·JournalGeophysical Research Letters·DateMar 11, 2013

Creating indestructible self-healing circuits

Researchers developed a system with on-chip sensors and a central processor to detect and respond to faults, achieving significant power reduction and improved performance. The self-healing capability was demonstrated in high-frequency integrated circuits, opening up possibilities for next-generation electronics.

SourceCalifornia Institute of Technology·JournalIEEE Transactions on Microwave Theory and Techniques·DateMar 11, 2013

Sleep loss precedes Alzheimer's symptoms

Researchers found that participants with preclinical Alzheimer's disease had poorer sleep efficiency and spent less time asleep than those without markers of the disease. Early evidence suggests a possible connection between sleep loss and brain plaques, a hallmark of Alzheimer's disease.

SourceWashU Medicine·JournalJAMA Neurology·DateMar 11, 2013

Peer support shows promise in epilepsy fight

A new study by Michigan State University found that young people with epilepsy experienced significant reductions in stigmatization after participating in regular peer support groups. The research, published in Epilepsy and Behavior, suggests a potential solution to the debilitating stigma surrounding epilepsy in developing countries.

SourceMichigan State University·JournalEpilepsy & Behavior·DateMar 11, 2013

Study shows how one insect got its wings

Researchers at Ohio State University have discovered the genetic mechanism that led to the development of wings in fruit flies, a key to their survival. By analyzing 20 cells present in the larval stage, they found that a specific gene, Dpp, triggers the growth of wings by activating another gene, vn.

SourceOhio State University·JournalProceedings of the National Academy of Sciences·DateMar 11, 2013

The closest star system found in a century

Astronomers have discovered the closest star system to the Sun, located 6.5 light years from Earth, making it an ideal target for planet-hunting expeditions. The star system consists of a pair of brown dwarfs, which are too small in mass to ignite hydrogen fusion.

SourcePenn State·JournalThe Astrophysical Journal Letters·DateMar 11, 2013

Why people put themselves under the knife

A long-term study by Ruhr-University Bochum found that patients who undergo plastic surgery experience improved life satisfaction, self-esteem, and mental health. The results suggest that cosmetic surgery can be a successful treatment for psychological variables, with no adverse effects observed.

SourceRuhr-University Bochum·JournalClinical Psychological Science·DateMar 11, 2013

Combination therapy provides similar clinical benefit as single drug treatment in MS

A large-scale trial by The Mount Sinai Medical Center found that combination therapy did not improve clinical benefits over single drug treatment in multiple sclerosis patients, but reduced the development of new lesions. Combination therapy with Glatiramer Acetate and Interferon Beta-1a showed a reduction in MRI lesion accumulation.

Folic acid lowers risk of autism

A new study found that taking folic acid supplements from four weeks before conception to eight weeks into pregnancy can lower the risk of childhood autism by 40%. The study, based on data from Norway's Mother and Child Cohort Study, suggests that this prevention method is simple, inexpensive, and effective.

An Internet for robots

Researchers developed a cloud-computing platform called RoboEarth Cloud Engine to accelerate robot learning and adaptation in complex tasks. The platform allows robots to access enterprise-scale computing infrastructure, paving the way for lighter, cheaper, and more intelligent robots.

Hope for threatened Tasmanian devils

Scientists have discovered a way to revive genetic diversity in Tasmanian devils, allowing them to develop a vaccine against the deadly devil facial tumour disease (DFTD). The vaccine aims to boost the devils' immune system and give them a fighting chance against the contagious cancer.

SourceUniversity of Cambridge·JournalProceedings of the National Academy of Sciences·DateMar 11, 2013

Digital records could expose intimate details and personality traits of millions

A new study published in PNAS shows that automated analysis of Facebook Likes can accurately predict personal details such as race, age, and sexual orientation. The researchers analyzed a dataset of over 58,000 US Facebook users and found accuracy rates of up to 95% for distinguishing between African-American and Caucasian Americans. H...

SourceUniversity of Cambridge·JournalProceedings of the National Academy of Sciences·DateMar 11, 2013

Global consensus on concussion in sport

A global panel of concussion experts has developed new guidelines for evaluating and treating concussions, which emphasize the importance of medical clearance before returning to competition. The guidelines also suggest a gradual return to activities after the first week post-injury.

SourceUniversity of Calgary·JournalBritish Journal of Sports Medicine·DateMar 11, 2013

University of Maryland School of Medicine discovers adaptations to explain strategies for survival on Mars

Researchers found differences in core proteins from a microorganism that lives in a salty lake in Antarctica, enabling it to tolerate high salinity and desiccation. The study reveals potential adaptations for life on Mars, with scientists exploring the use of these protein modifications to engineer novel enzymes and catalysts.

Aspirin may lower melanoma risk

A new study found that women taking aspirin have a reduced risk of developing melanoma, with the longest users showing the lowest risk. Aspirin's anti-inflammatory effects may help protect against this type of skin cancer.

SourceWiley·JournalCancer·DateMar 11, 2013

Clot-busting drug as effective as angioplasty

Researchers found that a clot-busting therapy can benefit some heart attack patients who cannot have immediate angioplasty, reducing all-cause mortality and cardiac rehospitalization. The STREAM trial included 1,915 patients from 15 countries and showed that drug therapy before transfer was at least as effective as angioplasty.

SourceAmerican College of Cardiology·JournalNew England Journal of Medicine·DateMar 11, 2013