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Science News Archive February 2014 - Page 25


Page 25 of 30

Female mice prefer unfamiliar male songs

A study found that female mice prefer songs from males of different families, suggesting an innate preference for avoiding close relatives. This preference is influenced by the female's reproductive cycle and scent-based cues from the male.

SourcePLOS·JournalPLOS ONE·DateFeb 5, 2014

Mass extinction may not cause all organisms to 'shrink'

Scientists analyzed bryozoan species before and after a mass extinction event, finding no significant change in body length. Maximum colony size declined in three out of four surviving types, suggesting the Lilliput effect may not be universal across organisms.

SourcePLOS·JournalPLOS ONE·DateFeb 5, 2014

Time is of the essence

A Weizmann Institute of Science study reveals that daily fluctuations in triglycerides in the liver are driven by internal 'body clocks' and timing of meals. Researchers found that restricting nighttime feeding led to a 50% decrease in liver TAG levels, suggesting that meal times can affect lipid accumulation.

SourceWeizmann Institute of Science·JournalCell Metabolism·DateFeb 5, 2014

Some receive unnecessary prioritization for liver transplantation, says Penn Medicine study

A recent Penn Medicine study reveals that patients with hepatopulmonary syndrome may be receiving unnecessary priority on the liver transplant wait list. The study found that these patients often have poor post-transplant survival rates and that a significant proportion of them do not meet clear clinical indications for transplantation.

Towards tailor-made adhesives

French scientists studied soft adhesive materials' inner structure and response to traction during the debonding process. Their findings aim to improve models of adhesive performance by understanding energy dissipation and material deformation.

SourceSpringer·JournalThe European Physical Journal E·DateFeb 5, 2014

World temperature records available via Google Earth

Climate researchers at the University of East Anglia have made world temperature records available via Google Earth, allowing users to zoom in on 6,000 weather stations and view monthly, seasonal, and annual temperature data. The dataset combines records from 150 years ago, providing valuable insights into climate change.

SourceUniversity of East Anglia·JournalEarth System Science Data·DateFeb 5, 2014

Nerve block eases troublesome hot flashes

A randomized, controlled trial shows that injecting anesthetic near a nerve bundle in the neck significantly reduces moderate to severe hot flashes in postmenopausal women. The treatment cut the number of hot flashes in half and reduced their intensity by 38% compared to a sham injection.

SourceThe Menopause Society·JournalMenopause·DateFeb 5, 2014

Is the male or female brain more vulnerable to triggers of violent behavior?

The article 'Not Hardwired: The Complex Neurobiology of Sex Differences in Violence' describes the complex biological mechanisms in the brain that lead to the development of behaviors. Brain structure, function, and connectivity can differ between men and women, affecting how they respond to stressful or abusive triggers.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalViolence and Gender·DateFeb 5, 2014

New evidence shows increase in obesity may be slowing, but not by much

A new study by University of Illinois professor Ruopeng An found that the prevalence of adult obesity has been slowing, but only slightly, with increases seen in those classified as morbidly obese. The study used data from the National Health and Nutrition Examination Survey (NHANES) to analyze BMI trends between 2000 and 2012.

Will your child be a slim adult?

A novel study found that adults who reported lower childhood experiences related to healthy eating, physical activity, and social connections were more likely to have a slim adult life. Conversely, those with common unhealthy childhood experiences such as poor nutrition, lack of exercise, and bullying had higher adult BMIs.

SourceCornell Food & Brand Lab·JournalPLOS ONE·DateFeb 5, 2014

Falcon feathers pop-up during dive

Researchers studied peregrine falcons' diving flight using high-speed cameras and wind tunnel models. They found that feathers may pop-up to prevent local flow separation, enabling the birds to reach high speeds while maintaining maneuverability.

SourcePLOS·JournalPLOS ONE·DateFeb 5, 2014

Valentine's Day advice: Don't let rocky past relations with parents spoil your romance

A study by University of Alberta researcher Matt Johnson found a small but important link between parent-adolescent relationship quality and intimate relationships 15 years later. Good parent-teen relationships can lead to higher quality romantic relationships, while negative experiences may repeat themselves in current partnerships.

SourceUniversity of Alberta·JournalJournal of Marriage and Family·DateFeb 5, 2014

Crossover sound

Scientists at Berkeley Lab have provided the first 'unambiguous demonstration' of phonon-based lasers by observing coherent phonon transport in superlattices. This breakthrough could lead to new advances in heat transfer applications and the development of phonon lasers.

SourceDOE/Lawrence Berkeley National Laboratory·JournalNature Materials·DateFeb 5, 2014

A short stay in darkness may heal hearing woes

Researchers at the University of Maryland found that adult mice experienced improved hearing after simulated blindness, which could lead to new treatments for hearing loss and tinnitus. The study showed that temporary vision loss can rewire the brain's auditory system in adults, allowing for sharper sound discrimination and sensitivity.

SourceUniversity of Maryland·JournalNeuron·DateFeb 5, 2014

Paper offers insights into network that plays crucial role in cell function and disease

A new research paper from the University of Notre Dame researchers Holly Goodson and Mark Alber resolves an ongoing debate about the assembly of a subcellular network that plays a critical role in cell function and disease. The study explains how stathmin, a key regulator, works by binding and destabilizing segments of microtubules.

SourceUniversity of Notre Dame·JournalProceedings of the National Academy of Sciences·DateFeb 5, 2014