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Science News for March 2, 2012


Diabetes risk from sitting around

A University of Leicester study found that long periods of sitting increase the risk of type 2 diabetes in women, with higher levels of insulin and inflammatory chemicals detected in sedentary individuals. The research highlights the importance of reducing sitting time for women to prevent chronic disease.

SourceUniversity of Leicester·JournalAmerican Journal of Preventive Medicine·DateMar 2, 2012

Flying jewels spell death for baby spiders

Four new species of Panops spider flies have been described from Australia, characterized by their jewel-like appearance and ability to feed on nectar. The larvae of these flies are internal parasites that prolong the life of juvenile spiders by living inside them for years, ultimately leading to the spider's death.

SourcePensoft Publishers·JournalZooKeys·DateMar 2, 2012

Energy squeeze

Researchers at Northwestern University discovered that squeezed polymers can generate significant amounts of energy for chemical reactions. However, they also found that certain polymer-based medical implants release harmful free radicals under moderate pressure, raising concerns about their safety.

SourceNorthwestern University·JournalAngewandte Chemie·DateMar 2, 2012

Heart healthy choices now pay off later

A Northwestern University study found that maintaining a healthy lifestyle from young adulthood into middle age can significantly reduce cardiovascular disease risk. Those who adhered to five key lifestyle factors, including a balanced diet and regular physical activity, were more likely to maintain a low-risk profile in their 40s.

Studies show exposure to diesel exhaust may increase lung cancer mortality

A cohort study and nested case-control study found a statistically significantly increased risk of lung cancer with increasing diesel exhaust exposure among workers and urban populations. Studies suggest stringent occupational and environmental standards are necessary to reduce the health burden of carcinogenic diesel exhaust.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateMar 2, 2012

Holding a mirror to brain changes in autism

Researchers used transcranial magnetic stimulation to measure brain activity in individuals with ASD and healthy controls, finding a blunted response to motor cortex stimulation. This suggests that deficits in the mirror neuron system contribute to social deficits in autism spectrum disorder.

SourceElsevier·JournalBiological Psychiatry·DateMar 2, 2012

Important clue uncovered for the origins of a type of supernovae explosion

A research team at the University of Pittsburgh used the Sloan Digital Sky Survey to determine that the merger of double white dwarfs is a plausible explanation for Type Ia supernovae. The study found that one double white dwarf merger event occurs in the Milky Way about once a century, remarkably close to the rate of observed Type Ia ...

SourceUniversity of Pittsburgh·JournalThe Astrophysical Journal Letters·DateMar 2, 2012

New high definition fiber tracking reveals damage caused by traumatic brain injury, Pitt team finds

A powerful new imaging technique called High Definition Fiber Tracking (HDFT) has been developed to clearly see for the first time neural connections broken by traumatic brain injury. HDFT scans have identified disruptions in neural pathways, allowing researchers to pinpoint breaks in the cables and quantify the proportion of fibers lost.

SourceUniversity of Pittsburgh Schools of the Health Sciences·JournalJournal of Neurosurgery·DateMar 2, 2012

When my eyes serve my stomach

A study by Rémi Radel found that hungry participants saw food-related words as brighter and were better at identifying them, indicating an early change in visual perception. This suggests the brain can adjust its processing to prioritize information related to needs or desires.

SourceAssociation for Psychological Science·JournalPsychological Science·DateMar 2, 2012

New computers respond to students' emotions, boredom

The new technology, AutoTutor and Affective AutoTutor, can gauge students' emotional states and adjust strategies to help them overcome frustration and boredom. Tested on over 1,000 students, the system produces significant learning gains, outperforming even expert human tutors.

SourceUniversity of Notre Dame·JournalACM Transactions on Intelligent Systems and Technology·DateMar 2, 2012

Violent relationships likely detrimental to good parenting

Research suggests that violent relationships during pregnancy can lead to poor co-parenting skills, with mothers being more likely to exhibit violence than fathers. Common couple violence, characterized by actions like shoving and hitting, can be detrimental to the development of a positive co-parenting relationship.

SourcePenn State·JournalJournal of Family Issues·DateMar 2, 2012

Video publication goes viral

A scientific method paper and video demonstrating a laboratory technique used to study mitochondrial dysfunctions in Alzheimer's disease and other disorders has gone viral. The technique, which measures the electrical potential across the inner mitochondrial membrane, has been accessed by more than 14,000 scientists worldwide.

SourceLoyola Medicine·JournalJournal of Visualized Experiments·DateMar 2, 2012

Ozone treated water v. lethal microbial material

A University of Alberta research team discovered that ozone-treated water can eradicate infectious proteins from cattle brain matter, providing a potential solution for decontaminating wastewater and sterilizing neurosurgical equipment. This breakthrough technique offers improved prion removal methods in meat processing plants and surg...

SourceUniversity of Alberta·JournalApplied and Environmental Microbiology·DateMar 2, 2012