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Science News for January 23, 2013


Greenland ice cores provide vision of the future

A new study using a 2,540-metre long Greenland ice core has reconstructed the island's temperature and ice sheet extent during the last interglacial period, known as the Eemian period. The research found that the warmest temperatures were about 8°C degrees warmer than average over the past 1,000 years.

SourceCSIRO Australia·JournalNature·DateJan 23, 2013

Household chores: Gender equality's final frontier

A new study by Cornell University sociologist Sharon Sassler found that cohabiting women tend to take on a disproportionate share of household chores, even when the women work and the men don't. Despite expecting more equal partnerships, most women retain accountability for the performance of their partners' chores.

SourceCornell University·JournalQualitative Sociology·DateJan 23, 2013

Putting the squeeze on cells

Researchers at MIT have created a device that can deliver RNA, proteins and nanoparticles through cell membranes by deforming cells. The technique has shown success in delivering reprogramming proteins and generating induced pluripotent stem cells with improved efficiency compared to existing methods.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateJan 23, 2013

Hailstones reveal life in a storm cloud

Researchers found a rich diversity of microbial life and chemicals in hailstones from a storm cloud, suggesting specific processes during cloud lifetime impact bacterial distribution. The study suggests that these processes could affect long-distance transport and geographical distribution of microbes on Earth.

SourcePLOS·JournalPLOS ONE·DateJan 23, 2013

Immigrants: Highly educated, underpaid

Recent immigrants to Canada often over-qualified for their jobs due to language barriers and lack of work experience. However, increased proficiency in English or French, combined with post-immigration education and training, can significantly improve job matching.

SourceConcordia University·JournalISRN Economics·DateJan 23, 2013

Novel approaches needed to end growing scourge of 'superbugs'

Infectious disease experts call for novel approaches to end the growing scourge of 'superbugs,' citing 2 million annual infections and 100,000 deaths. The authors recommend new strategies to prevent infections, encourage economic investment in anti-infective treatments, and alter host-microbe interactions.

SourceLA BioMed·JournalNew England Journal of Medicine·DateJan 23, 2013

Nanoparticles digging the world's smallest tunnels

Scientists at KIT and Rice University successfully dug the world's smallest tunnels into graphite samples, opening doors to structuring of materials on a nanometer scale. The creation of porous graphite with tailored pore sizes could enhance lithium-ion battery performance and enable long-term drug delivery in medicine.

SourceHelmholtz Association·JournalNature Communications·DateJan 23, 2013

Frequent multitaskers are bad at it

A University of Utah study found that people who multitask the most, including those talking on cell phones while driving, are actually least capable of doing so. This is because they often lack the ability to focus attention on a singular task and tend to be impulsive and sensation-seeking.

SourceUniversity of Utah·JournalPLOS ONE·DateJan 23, 2013

Previous unknown fox species found

Researchers at the University of Witwatersrand and University of Johannesburg have discovered a new species of ancient fox, Vulpes Skinneri, from the Malapa site. The fossils, which date back two million years, show distinct differences from existing fox species and provide insight into the evolution of modern African mammals.

SourceUniversity of the Witwatersrand·JournalTransactions of the Royal Society of South Africa·DateJan 23, 2013

Estrogen fights urinary infection in mouse study

Researchers found that estrogen levels can affect infection susceptibility, bladder health and the inflammatory response to infection in mice with simulated menopause. Boosting estrogen levels may get a second look as an approach for reducing urinary tract infections in menopausal women.

SourceWashU Medicine·JournalInfection and Immunity·DateJan 23, 2013

Tall and thin not so great for lung disease

Women with NTM infections show a weaker immune response linked to their body fat levels. The study also found that tall and thin individuals share characteristics with Marfan syndrome, suggesting a genetic link to increased susceptibility.

SourceNational Jewish Health·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateJan 23, 2013

Free clinics reduce emergency department visits

A recent study found that free clinics significantly reduced non-emergency emergency department visits among uninsured patients. The research, conducted in Virginia, analyzed records of 52,010 individual uninsured patients who visited five hospitals' emergency departments over three years.

SourcePenn State·JournalJournal of Health Care for the Poor and Underserved·DateJan 23, 2013

Controlled crumpling of graphene forms artificial muscle

Researchers at Duke University developed a method to control the crumpling and unfolding of large-area graphene films, enabling the creation of artificial muscles with unprecedented properties. The controlled crumpling allows for tunable transparency and opacity, as well as contraction and relaxation on demand.

SourceDuke University·JournalNature Materials·DateJan 23, 2013

Forecasting brain tumors like a storm

Researchers developed a new method to predict individual patient's brain tumor growth, enabling physicians to rapidly identify effective therapies. The approach accounts for tumor features such as shape, density, and growth rate, allowing clinicians to distinguish between patients with different tumor characteristics.

SourceNorthwestern University·JournalPLOS ONE·DateJan 23, 2013

Moffitt study shows smoking cessation more successful for cancer patients who quit before surgery

Researchers found that lung and head and neck cancer patients who quit smoking before surgery had significantly lower relapse rates compared to those who smoked during the week prior to surgery. The study also identified factors such as high fears regarding cancer recurrence, depression, and low belief in quitting abilities as predicto...

Studies provide insights into inherited causes of autism

Two new studies identify inherited genetic mutations linked to autism spectrum disorders, suggesting that 5% of autism risk is due to complete gene function disruption. Researchers also found partial loss of gene function and variability in autism severity despite similar genetic mutations.

SourceCell Press·JournalNeuron·DateJan 23, 2013

New study suggests many apples a day keep the blues at bay

A new study from the University of Otago found that consuming seven to eight servings of fruits and vegetables per day can improve mood and overall wellbeing in young adults. The research suggests a strong relationship between positive emotions and higher fruit and vegetable consumption, with no significant impact on other foods.

SourceUniversity of Otago·JournalBritish Journal of Health Psychology·DateJan 23, 2013

Underwater CO2 shows potential as barrier to Asian carp

Researchers found carbon dioxide to be an effective tool in repelling fish from an area, with all four species tested showing the same response. This non-physical barrier could complement electric fences and increase the likelihood of stopping invasive Asian carp from entering Lake Michigan.

SourceUniversity of Illinois College of Agricultural, Consumer and Environmental Sciences·JournalCanadian Journal of Fisheries and Aquatic Sciences·DateJan 23, 2013

'Navigating Life with a Brain Tumor'

The new book, Navigating Life with a Brain Tumor, offers comprehensive guidance on managing brain tumors, including treatment options, side effects, and coping strategies. Written by neuro-oncologists from Mayo Clinic and Tufts Medical Center, the book aims to empower patients to be active participants in their care.

Risk of lung cancer death has risen dramatically among women smokers in recent decades

Female smokers have seen a significant rise in the risk of death from lung cancer and chronic obstructive lung disease (COLD) in recent years, with a 25.7 times higher risk than never-smokers. This increase is largely attributed to changing smoking patterns, where women now smoke more like men, starting earlier and consuming more cigar...

SourceAmerican Cancer Society·JournalNew England Journal of Medicine·DateJan 23, 2013