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Science News for December 11, 2014


Tourism poses a threat to dolphins in the Balearic Islands

A study led by the University of Barcelona found that tourism, fishing, and sea transport are compromising the wellbeing of common bottlenose dolphins in the Pityusic Islands. The researchers estimate there are only a few hundred dolphins in the area, and conservation measures are needed to protect them.

SourceSpanish Foundation for Science and Technology·JournalJournal of the Marine Biological Association of the United Kingdom·DateDec 11, 2014

March of the penguin genomes

The study provides insights into how penguins have adapted to the cold Antarctic environment through complex biological systems. The researchers identified genes related to beta-keratins, lipid metabolism, and forelimb evolution that are unique to penguins.

SourceBMC (BioMed Central)·JournalGigaScience·DateDec 11, 2014

Genes tell story of birdsong and human speech

Researchers have discovered that birds and humans share the same genes to produce speech, with similar brain circuitry involved in singing behavior. The study, led by Duke neuroscientist Erich Jarvis, reveals that vocal learning evolved twice or three times among songbirds, parrots, and hummingbirds.

SourceDuke University·JournalScience·DateDec 11, 2014

Mapping the tree of life

A team of scientists completed the largest whole genome study of a single class of animals to date, sequencing and comparing full genomes of 48 bird species. The study resolves early branches in the tree of life of modern birds, providing new insights into their evolutionary history and adaptation to different lifestyles.

SourceLouisiana State University·JournalScience·DateDec 11, 2014

Energy efficient homes linked to asthma

A new study by the University of Exeter Medical School found that residents in energy-efficient social housing may have a greater risk of developing asthma. The presence of mould doubled this risk, highlighting the need for residents to properly ventilate their homes to prevent health issues.

SourceUniversity of Exeter·JournalEnvironment International·DateDec 11, 2014

Ebola virus may replicate in an exotic way

A study by University of Utah researchers found a unique mechanism used by the Ebola virus and other related viruses to replicate. The discovery, which was made possible through computer simulations, may lead to new targets for antiviral drugs within five to 10 years.

SourceUniversity of Utah·JournalPLOS Computational Biology·DateDec 11, 2014

Nanoshaping method points to future manufacturing technology

A team of researchers has developed a new method, laser shock imprinting, to create large-area patterns of three-dimensional nanoshapes from metal sheets. This technique enables the mass production of innovative materials with engineered surfaces that control light, potentially revolutionizing high-speed electronics, advanced sensors, ...

SourcePurdue University·JournalScience·DateDec 11, 2014

International team maps 'big bang' of bird evolution

An international team has sequenced and compared full genomes of 48 bird species to resolve the timing and relationships of modern birds. The study suggests that only a few bird lineages survived the mass extinction event, giving rise to the 10,000 Neoaves species that comprise 95% of all bird species.

SourceBGI Shenzhen·JournalScience·DateDec 11, 2014

Decoding the Tree of Life

A team of scientists has decoded the avian genome, revealing that bird evolution occurred rapidly 65 million years ago. The study provides new insights into the evolutionary history of birds, including the discovery of ancient viruses and unexpected kinship between waterbirds and landbirds.

SourceUniversity of Florida·JournalScience·DateDec 11, 2014

A key human gene modifies the immune response to flu vaccine

A study found that genetic variants in the IL-28B gene affect influenza vaccine responses. Individuals with at least one copy of the minor allele were more likely to achieve seroconversion after vaccination, particularly those on high doses of immune-suppressive drugs. Blocking the IL-28B receptor may boost the antibody response to flu...

SourcePLOS·JournalPLOS Pathogens·DateDec 11, 2014

Youngest bone marrow transplant patients at higher risk of cognitive decline

Research from St. Jude Children's Research Hospital identifies a high-risk group of young patients who may experience intellectual decline after bone marrow transplantation. The study found that those aged 3 or younger at the time of transplantation with total body irradiation were at higher risk, leading to lower IQ scores and potenti...

SourceSt. Jude Children's Research Hospital·JournalJournal of Clinical Oncology·DateDec 11, 2014

Poor diet links obese mothers and stunted children

A new study published in the Maternal and Child Health Journal found that households with obese mothers and stunted children often rely on high-energy, low-nutrient foods like chocolate and biscuits. In contrast, diets rich in fruits and vegetables are associated with lower rates of double-burden households.

SourceUniversity College London·JournalMaternal and Child Health Journal·DateDec 11, 2014

Weighing in on the role of mindfulness in slimming down

Researchers from Ohio State University reviewed 19 studies on the effectiveness of mindfulness-based programs for weight loss. While some studies showed weight loss among participants who practiced mindfulness, others found no relationship between the two. The review highlights the need for further research to understand how mindfulnes...

SourceOhio State University·JournalPsychosomatic Medicine·DateDec 11, 2014

11th century king inspires novel GP appointment system

Westgate Medical Practice introduced a novel appointment system where patients can attend at designated times, reducing wait times and increasing patient satisfaction. The practice saw an improvement in work patterns for nursing staff and a significant increase in patients seeing their preferred doctor.

SourceBMJ Group·JournalThe BMJ·DateDec 11, 2014

Study supports the theory that men are idiots

Researchers analyzed Darwin Award winners and found that 88.7% were male, supporting the idea that men are more prone to 'idiotic risk taking behaviour'. The study suggests males may engage in such risky actions as a rite of passage or for social esteem

SourceBMJ Group·JournalThe BMJ·DateDec 11, 2014

Early identification of modifiable risk factors for cognitive decline

A study suggests that early signs of cognitive decline are present in some individuals during midlife and are associated with cumulative exposure to modifiable risk factors. Elevated blood pressure and low physical activity over a 25-year period were found to be predictors of worse cognitive performance, even within the normal range.

SourceAmerican College of Neuropsychopharmacology·JournalNeuropsychopharmacology·DateDec 11, 2014

3-D maps reveal the genome's origami code

High-resolution 3D maps of the human genome reveal thousands of hidden switches that regulate genes, including those associated with cancer and diseases. The study provides a new understanding of genetic regulation and its role in cellular differentiation.

SourceRice University·JournalCell·DateDec 11, 2014

Short sleep duration and sleep-related breathing problems increase obesity risk in kids

A new study from Albert Einstein College of Medicine found that children with short sleep duration and sleep-related breathing problems have a higher risk of becoming obese by age 15. The research aimed to track the combined effect of these two risk factors in children over time, filling a gap in previous studies. Children with severe ...

SourceAlbert Einstein College of Medicine·JournalThe Journal of Pediatrics·DateDec 11, 2014

Can a blood biomarker predict the presence of intracranial lesions following mild traumatic brain injury?

A new study suggests that measuring glial fibrillary acidic protein (GFAP) in the blood can predict the presence of intracranial lesions following mild traumatic brain injury. The study found GFAP to be a more reliable biomarker than S100β, which was not as effective in distinguishing between intracranial and extracranial lesions.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalJournal of Neurotrauma·DateDec 11, 2014

What's on your surgeon's playlist?

The study suggests that music can have a calming effect on surgeons and theatre staff, improving communication and efficiency. The authors recommend specific songs, such as Stayin' Alive by the Bee Gees, to play in the operating theatre.

SourceBMJ Group·JournalThe BMJ·DateDec 11, 2014

Roller coaster rides trigger pediatric stroke

A 4-year-old boy experienced a stroke after riding roller coasters, likely caused by a tear in his carotid artery. The incident highlights the risk of carotid artery dissection in children due to sudden movements. Previous reports have mostly focused on adult riders, making this case one of the youngest reported.

SourceLoyola Medicine·JournalPediatric Neurology·DateDec 11, 2014

Home on the range

In a paper published in Human Organization, UC Santa Barbara anthropologist Jeffrey Hoelle examines the rise of cattle ranching in the Brazilian state of Acre. He argues that cattle culture emerged as a result of local economic relationships, which developed cultural beliefs based on interdependence with animals.

SourceUniversity of California - Santa Barbara·JournalHuman Organization·DateDec 11, 2014

Happy-go-lucky CEOs score better returns

Research from the University of British Columbia's Sauder School of Business shows that CEO optimism leads to positive stock price reactions. The study analyzed transcripts of earnings calls and found that managers' natural communication style, particularly their use of positive language, influences market activity.

SourceUniversity of British Columbia·JournalReview of Accounting Studies·DateDec 11, 2014