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Science News Archive 2014 - Page 45


Page 45 of 376

Parental age at childbirth may affect metabolism of adult offspring

A study found that middle-aged men whose parents were older at birth had lower blood pressure, more favorable cholesterol levels, and improved glucose metabolism. Further research is needed to determine the causes of this effect, with epigenetics and post-natal factors being potential explanations.

SourceWiley·JournalAmerican Journal of Human Biology·DateNov 13, 2014

Bigger is not always better

A new study of over 12,000 Danish patients with hip fractures found that those treated in smaller hospital departments had a lower mortality rate and shorter length of stay. The quality of care was also higher in these departments compared to larger ones.

SourceAarhus University·JournalMedical Care·DateNov 13, 2014

Cookie Monster teaches self-control

A study by University of Iowa professor Deborah Linebarger found that preschoolers who watched videos starring Cookie Monster were better able to control impulses and remember number sequences. These executive functioning skills are crucial for school readiness and predict academic skills like reading, math, and science.

New Alzheimer's-related memory disorder identified

A new neurological disease closely resembling Alzheimer's disease, called primary age-related tauopathy (PART), has been defined and established criteria for diagnosis. PART is characterized by cognitive impairment without amyloid plaques, but with neurofibrillary tangles composed of a protein called tau.

SourceUniversity of Kentucky·JournalActa Neuropathologica·DateNov 13, 2014

Bird battles promote unity on the front line

Research from the University of Bristol found that bird groups unite at nightfall after territorial conflicts, strengthening their defense of valuable roost sites. This cooperation between group members is favored by conflict with outsiders, highlighting a link to human societal evolution.

SourceUniversity of Bristol·JournalCurrent Biology·DateNov 13, 2014

Without security, there can be no health care

A recent review reports on the devastating effects of the Syrian conflict on the healthcare system, including outbreaks of poliomyelitis, measles, and cutaneous leishmaniasis. Vaccination coverage has dropped dramatically, hampering efforts to combat these epidemics.

SourcePLOS·JournalPLOS Pathogens·DateNov 13, 2014

Pulling together the early solar system

A team of researchers has provided evidence that the early solar system's protoplanetary disk was shaped by an intense magnetic field, driving gas toward the sun at a rapid rate. The study analyzed a meteorite sample, extracting individual grains and measuring their magnetic orientations to determine the original magnetic field.

Forecasting diseases using Wikipedia

A team from Los Alamos National Laboratory successfully monitored and forecasted influenza, dengue fever, and tuberculosis outbreaks worldwide. The study demonstrates the potential of using public health data to build an operational disease monitoring system.

SourcePLOS·JournalPLOS Computational Biology·DateNov 13, 2014

It's not always the DNA

Research reveals that damaged messenger RNA can cause ribosomes to jam, leading to the production of short proteins and contributing to neurodegenerative diseases. Oxidized mRNA was found to accumulate in cells with advanced Alzheimer's, highlighting a potential mechanism for the disease.

SourceWashington University in St. Louis·JournalCell Reports·DateNov 13, 2014

Telephone coaches improve children's asthma treatment

A new program has been shown to reduce asthma symptoms and hospitalizations in low-income children by training their parents over the phone. The peer coaching model, which was tested in a two-year trial, resulted in significant reductions in ER visits and hospitalizations among families with Medicaid insurance.

SourceWashU Medicine·JournalJournal of Allergy and Clinical Immunology·DateNov 13, 2014

Symbiotic plants are more diverse, finds new study

A recent study by Cornell University research found that symbiotic plants develop nectar glands to attract and feed protective animals like ants, leading to increased diversity in plant species over time. This mutualistic relationship allows plants to allocate energy resources to new traits and adapt to new environments.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateNov 13, 2014

EPA's Clean Power Plan: Economic strengths and weaknesses

The plan aims to reduce carbon emissions from power plants by 30% by 2030 through various actions such as improving efficiency, using natural gas, expanding renewables, and creating energy efficiency programs. However, economists argue that the current design of the plan may not achieve its intended emissions reductions due to a lack o...

SourceUniversity of Chicago·JournalScience·DateNov 13, 2014

For female chimpanzees, no consent agreement

A new study published in Current Biology by Feldblum et al. has found that male chimpanzee aggression towards females is an adaptive strategy, increasing mating frequency and paternal likelihood for high-ranking males. Genetic analysis of fecal material reveals long-term sexual coercion as a key factor in paternity.

SourceArizona State University·JournalCurrent Biology·DateNov 13, 2014

Molecule fights cancer on 2 fronts

Researchers have developed a synthetic anti-cancer molecule JK-31 that blocks the signalling of a 'growth factor' chemical promoting blood vessel networks to feed tumours. The molecule also inhibits a protein controlling cancer cell division and proliferation.

SourceUniversity of Leeds·JournalPLOS ONE·DateNov 13, 2014

Oxytocin helps to better overcome fear

Researchers found that oxytocin facilitates extinction of conditioned fear in humans by reducing activity in the amygdala and increasing stimulation in fear-inhibiting regions. This basic research could lead to new treatments for anxiety disorders.

SourceUniversity of Bonn·JournalBiological Psychiatry·DateNov 13, 2014

New theory may help demystify pregnancy-related condition

A new theory proposes that preeclampsia is caused by the body's response to insufficient oxygen and nutrient supply to the growing fetus, leading to high blood pressure and organ damage. The condition can have fatal complications for pregnant women and their babies if left untreated.

SourceWiley·JournalAnaesthesia·DateNov 13, 2014

Mars, too, has macroweather

A new study by McGill University and UCL finds that Mars experiences a transitional 'macroweather' regime between weather and climate. The sun plays a major role in determining macroweather on Mars, with temperature and wind fluctuations occurring over 1.8 Martian days.

SourceMcGill University·JournalGeophysical Research Letters·DateNov 13, 2014

How adult fly testes keep from changing into ovaries

Researchers discovered a mutation in adult fruit flies that prevents testicular cells from transforming into ovaries, maintaining sex identity. The study's findings have implications for understanding cell fate conversions and may lead to new therapeutic approaches.

SourceCell Press·JournalDevelopmental Cell·DateNov 13, 2014