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Science News Archive September 2014


Page 1 of 34

New learning mechanism for individual nerve cells

Researchers at Lund University have discovered a new learning mechanism in individual nerve cells, which enables the brain to time its reactions and control complex processes like blinking and intelligible speech. This discovery has significant implications for rehabilitation following stroke, autism, ADHD, and language problems.

SourceLund University·JournalProceedings of the National Academy of Sciences·DateSep 30, 2014

How dinosaur arms turned into bird wings

Researchers have made a breakthrough in understanding how birds evolved from dinosaurs by studying fossil and developmental data, revealing the fusion of two bones to form a semilunate bone. The study clarifies the identity of wrist bones in both groups, shedding light on the evolutionary reversal of a lost bone.

SourcePLOS·JournalPLOS Biology·DateSep 30, 2014

Taking thin films to the extreme

Harvard University researchers demonstrate ability to paint ultra-thin coatings onto rough surfaces using thin-film interference, enabling lightweight decorative logos on spacecraft. The technology also holds promise for making flexible electronic devices and advanced solar cells.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateSep 30, 2014

Risky metabolism

A study by Max-Planck Institute found that great tits' risk-taking behaviour correlates with both metabolic rate and ambient temperature. Birds with high metabolic rates and low temperatures were more likely to approach predators.

SourceMax-Planck-Gesellschaft·JournalFunctional Ecology·DateSep 30, 2014

Depression increasing across the country

A study by San Diego State University professor Jean M. Twenge found that Americans now report more psychosomatic symptoms of depression than their counterparts in the 1980s. These symptoms include trouble sleeping, concentration difficulties, memory problems, feeling overwhelmed, restless sleep, poor appetite, and lack of motivation.

SourceSan Diego State University·JournalSocial Indicators Research·DateSep 30, 2014

New diagnostic approach for autism in Tanzania

Researchers at Brown University created a culturally compatible diagnostic approach for autism in Tanzanian children. The approach uses a collection of instruments adapted from established tools, including the Childhood Autism Rating Scale-Second Edition (CARS-2) and Malawi Development Assessment Tool.

SourceBrown University·JournalIntellectual and Developmental Disabilities·DateSep 30, 2014

Targeted treatment could halt womb cancer growth

Researchers have found a targeted treatment, afatinib, that can stop the growth of aggressive womb cancer cells and shrink tumours. The drug targets faults in the HER2 gene, which lie at the heart of the cancer cells, offering new hope for patients with this rare but deadly form of cancer.

SourceCancer Research UK·JournalBritish Journal of Cancer·DateSep 30, 2014

Americans undergo colonoscopies too often, study finds

A recent study published in the Journal of General Internal Medicine found that healthy Americans who undergo colonoscopies do so too frequently, with many receiving repeat screenings long before they should. The study suggests that endoscopists should adhere to national guidelines more closely.

SourceSpringer·JournalJournal of General Internal Medicine·DateSep 30, 2014

Diuretics in proton pump inhibitor-associated hypomagnesemia

Long-term PPI use is associated with a higher risk of severe hypomagnesemia, particularly among patients receiving diuretics. Researchers estimate that one excess hospitalization for hypomagnesemia may occur among 76,591 outpatients during the first three months of PPI treatment.

SourcePLOS·JournalPLOS Medicine·DateSep 30, 2014

On the trail of the truffle flavor

Researchers found that soil bacteria produce volatile compounds that make up part of the distinctive truffle smell. The study, published in Environmental Microbiology, sheds light on how symbiosis between fungi and microorganisms benefits both partners.

SourceGoethe University Frankfurt·JournalEnvironmental Microbiology·DateSep 30, 2014

Study shows how chimpanzees share skills

Researchers tracked the spread of novel tool-use behaviors among Sonso chimpanzees, demonstrating that wild chimpanzees learn and adopt new skills from each other. The study provides strong evidence for social transmission and cultural diversity in wild chimpanzee communities.

SourcePLOS·JournalPLOS Biology·DateSep 30, 2014