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Science News for March 11, 2008


Royal corruption is rife in the ant world

Scientists have discovered that ants deliberately spread their offspring with 'royal' genes to avoid detection and maintain an unfair advantage in queen selection. This genetic cheating undermines the notion of egalitarianism in ant societies, revealing a complex web of conflict and cooperation.

SourceUniversity of Leeds·JournalProceedings of the National Academy of Sciences·DateMar 11, 2008

Bird brains suggest how vocal learning evolved

Researchers found that bird brain structures for singing and learning are embedded in areas controlling movement, indicating a possible evolutionary link between vocal learning and motor control. This discovery may also shed light on human language origins, with spoken language possibly emerging from pre-existing motor pathways.

SourcePLOS·JournalPLOS ONE·DateMar 11, 2008

The fight against obesity -- a new insight

Scientists at Maastricht University have discovered that mitochondrial uncoupling occurs naturally in human skeletal muscle cells when exposed to mild cold. This process can increase energy consumption, potentially leading to new obesity treatments. Further research is needed to identify the proteins responsible for uncoupling.

SourcePLOS·JournalPLOS ONE·DateMar 11, 2008

Grappling with grammar

Children with specific language impairment (SLI) have impaired grammar processing, but compensate by using neural circuitry associated with vocabulary and world knowledge. This finding offers new hope for sufferers of SLI and suggests a need for focussed and specialised help.

SourceUniversity College London·JournalPLOS ONE·DateMar 11, 2008

Minorities, whites get equal care in hospitals

A University of Maryland study of 1841 hospitals in 13 states found that when whites and minorities are admitted for the same reason, they receive the same quality care. However, the study also identified low-performing hospitals where minority patients face higher risks of mortality and complications.

SourceUniversity of Maryland·JournalHealth Affairs·DateMar 11, 2008

Combined stenting and photodynamic therapy improves survival in late stage liver cancer patients

Researchers found that combining stenting with photodynamic therapy improved survival rates for patients with advanced liver bile duct cancer, reducing mortality by 57% compared to stenting treatment alone. The study suggests that this combined approach can help extend survival rates for these patients.

SourceAmerican Gastroenterological Association·JournalClinical Gastroenterology and Hepatology·DateMar 11, 2008

Model identifies targets for eradication of malaria

Researchers developed a mathematical model estimating asymptomatic infections in malaria transmission. The model predicts that regions of moderate transmission can be eradicated below a threshold, making industrialized nations highly unlikely to experience re-emergence.

SourcePLOS·JournalPLOS ONE·DateMar 11, 2008

Mystery behind the strongest creature in the world

Researchers studied the beetle's shell using advanced imaging techniques to understand its color-changing property. The study found that the light interferes with the structure to produce the green color, and when water penetrates, it destroys the interference phenomenon leading to a black coloration.

SourceIOP Publishing·JournalNew Journal of Physics·DateMar 11, 2008

Insecticide combo delivers knockout punch

A combination of an insect protein and Bt toxin kills crop pests more effectively than either ingredient alone, inhibiting growth rate and reducing resistance. Researchers found a synergistic effect increasing mortality rates by over 10 times.

SourcePenn State·JournalPLOS ONE·DateMar 11, 2008

A new mouse model of mania

Researchers have created a new mouse model of mania, allowing them to study the complex interactions between genetic and environmental factors contributing to bipolar disorder. The study found that mice missing the GluR6 gene exhibited symptoms of mania, including increased activity, reduced anxiety, and aggressive behavior.

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateMar 11, 2008

Modern physics is critical to global warming research

Researchers like Brad Marston use statistical physics to analyze climate patterns, providing insights into the driving concepts behind global warming. By focusing on the larger mechanisms that drive changes in rainfall, scientists can improve their understanding of climate change and its effects.

SourceBrown University·JournalJournal of the Atmospheric Sciences·DateMar 11, 2008

Specialized hospital care associated with better survival in Dutch ovarian cancer patients

A nationwide study in the Netherlands found that women diagnosed with early-stage ovarian cancer treated at semispecialized or specialized hospitals survived longer than those treated at general hospitals. The estimated five-year survival improved with increasing specialization of the treatment facility, from 38% to 40.3%.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateMar 11, 2008

Biologists at UC San Diego identify key protein in cell's 'self-eating' function

UC San Diego researchers have identified a novel protein called Atg30 that controls peroxisome degradation, a process linked to cell growth, aging, and homeostasis. The discovery allows scientists to control this aspect of cellular autophagy, potentially leading to new insights into aging, immunity, neurodegeneration, and cancer.

SourceUniversity of California - San Diego·JournalDevelopmental Cell·DateMar 11, 2008